74HC123D,652

74HC123; 74HCT123 Dual retriggerable monostable multivibrator with reset Rev. 11 — 3 September 2020 Product data sheet 1. General description The 74HC123; 74HCT123 is a dual retriggerable monostable multivibrator with reset. The basic output pulse width is programmed by selection of external components (REXT and CEXT). Once triggered this basic pulse width may be extended by retriggering either of the edge triggered inputs (nA or (nB). By repeating this process, the output pulse period (nQ = HIGH, nQ = LOW) can be made as long as desired. Alternatively, an output delay can be terminated at any time by a LOW-going edge on input nRD. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of VCC. Schmitt-trigger action in the nA and nB inputs, makes the circuit highly tolerant to slower input rise and fall times. 2. Features and benefits • • • • • • • • • • • • • Wide supply voltage range from 2.0 V to 6.0 V CMOS low power dissipation High noise immunity Latch-up performance exceeds 100 mA per JESD 78 Class II Level B Complies with JEDEC standards: • JESD8C (2.7 V to 3.6 V) • JESD7A (2.0 V to 6.0 V) Input levels: • For 74HC123: CMOS level • For 74HCT123: TTL level DC triggered from active HIGH or active LOW inputs Retriggerable for very long pulses up to 100 % duty factor Direct reset terminates output pulse Schmitt-trigger action on all inputs except for the reset input ESD protection: • HBM JESD22-A114F exceeds 2000 V • MM JESD22-A115-A exceeds 200 V Multiple package options Specified from -40 °C to +85 °C and from -40 °C to +125 °C 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 3. Ordering information Table 1. Ordering information Type number Package 74HC123D Temperature range Name Description Version -40 °C to +125 °C SO16 plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 -40 °C to +125 °C SSOP16 plastic shrink small outline package; 16 leads; body width 5.3 mm SOT338-1 -40 °C to +125 °C TSSOP16 plastic thin shrink small outline package; 16 leads; SOT403-1 body width 4.4 mm -40 °C to +125 °C DHVQFN16 plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; 16 terminals; body 2.5 × 3.5 × 0.85 mm 74HCT123D 74HC123DB 74HCT123DB 74HC123PW 74HCT123PW 74HC123BQ SOT763-1 4. Functional diagram 14 15 S 1A 1B 1RD Q 1 13 Q 2 2RD 1Q 4 1Q RD 3 6 S 2B 1REXT/CEXT T 7 2A 1CEXT Q 9 5 2CEXT 2REXT/CEXT 2Q T 10 Q 12 2Q RD 11 001aaa610 Fig. 1. Functional diagram 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 2 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 14 15 1 4 3 Q 1 1A Q 2 1B 10 2B RD 7 1Q 10 9 4 5 RCX & 12 mna515 11 2RD CX 2Q 12 11 3 1RD Fig. 2. 1Q 13 2Q 5 T 9 2A R 7 6 S & 6 1REXT/CEXT 15 2REXT/CEXT 13 RCX 2 1CEXT 14 2CEXT CX R mna516 Logic symbol Fig. 3. IEC logic symbol nREXT/CEXT VCC nQ nRD R VCC nQ R CL CL VCC R CL CL nA nB Fig. 4. CL R mna518 Logic diagram 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 3 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 5. Pinning information 5.1. Pinning 1 1A terminal 1 index area 1B 2 15 1REXT/CEXT 1RD 3 14 1CEXT 1Q 4 13 1Q 2Q 5 12 2Q 2CEXT 6 2REXT/CEXT 7 2 15 1REXT/CEXT 1RD 3 14 1CEXT 1Q 4 13 1Q 2Q 5 12 2Q 2CEXT 6 11 2RD 2REXT/CEXT 7 10 2B GND 8 9 11 2RD 10 2B 001aaf046 Transparent top view (1) This is not a supply pin. There is no electrical or mechanical requirement to solder the pad. In case soldered, the solder land should remain floating or connected to VCC. 2A 001aaa698 Fig. 5. VCC(1) 9 1B 8 16 VCC 2A 1 GND 74HC123 74HCT123 1A 16 VCC 74HC123 Pin configuration SOT109-1 (SO16), SOT338-1 (SSOP16) and SOT403-1 (TSSOP16) Fig. 6. Pin configuration SOT763-1 (DHVQFN16) 5.2. Pin description Table 2. Pin description Symbol Pin Description 1A 1 negative-edge triggered input 1 1B 2 positive-edge triggered input 1 1RD 3 direct reset LOW and positive-edge triggered input 1 1Q 4 active LOW output 1 2Q 5 active HIGH output 2 2CEXT 6 external capacitor connection 2 2REXT/CEXT 7 external resistor and capacitor connection 2 GND 8 ground (0 V) 2A 9 negative-edge triggered input 2 2B 10 positive-edge triggered input 2 2RD 11 direct reset LOW and positive-edge triggered input 2 2Q 12 active LOW output 2 1Q 13 active HIGH output 1 1CEXT 14 external capacitor connection 1 1REXT/CEXT 15 external resistor and capacitor connection 1 VCC 16 supply voltage 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 4 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 6. Functional description Table 3. Function table H = HIGH voltage level; L = LOW voltage level; X = don’t care; ↑ = LOW-to-HIGH transition; ↓ = HIGH-to-LOW transition; = one HIGH level output pulse; = one LOW level output pulse. Input [1] Output nRD nA nB nQ nQ L X X L H X H X L [1] H [1] X X L L [1] H [1] H L ↑ H ↓ H ↑ L H If the monostable was triggered before this condition was established, the pulse will continue as programmed. 7. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V). Symbol Parameter VCC supply voltage IIK input clamping current IOK Min Max -0.5 +7 V VI < -0.5 V or VI > VCC + 0.5 V - ±20 mA output clamping current VO < -0.5 V or VO > VCC + 0.5 V - ±20 mA IO output current except for pins nREXT/CEXT; VO = -0.5 V to (VCC + 0.5 V) - ±25 mA ICC supply current - 50 mA IGND ground current - -50 mA Tstg storage temperature -65 +150 °C Ptot total power dissipation - 500 mW [1] Conditions [1] Unit For SOT109-1 (SO16) package: Ptot derates linearly with 12.4 mW/K above 110 °C. For SOT338-1 (SSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C. For SOT403-1 (TSSOP16) package: Ptot derates linearly with 8.5 mW/K above 91 °C. For SOT763-1 (DHVQFN16) package: Ptot derates linearly with 11.2 mW/K above 106 °C. 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 5 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 8. Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Conditions VCC supply voltage VI input voltage VO output voltage Δt/ΔV input transition rise and fall rate Tamb 74HC123 74HCT123 Unit Min Typ Max Min Typ Max 2.0 5.0 6.0 4.5 5.0 5.5 V 0 - VCC 0 - VCC V 0 - VCC 0 - VCC V VCC = 2.0 V - - 625 - - - ns/V VCC = 4.5 V - 1.67 139 - 1.67 139 ns/V VCC = 6.0 V - - 83 - - - ns/V -40 +25 +125 -40 +25 nRD input ambient temperature +125 °C 9. Static characteristics Table 6. Static characteristics At recommended operating conditions; voltages are referenced to GND (ground = 0 V). Symbol Parameter Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max VCC = 2.0 V 1.5 1.2 - 1.5 - 1.5 - V VCC = 4.5 V 3.15 2.4 - 3.15 - 3.15 - V VCC = 6.0 V 4.2 3.2 - 4.2 - 4.2 - V VCC = 2.0 V - 0.8 0.5 - 0.5 - 0.5 V VCC = 4.5 V - 2.1 1.35 - 1.35 - 1.35 V VCC = 6.0 V - 2.8 1.8 - 1.8 - 1.8 V VI = VIH or VIL HIGH-level output voltage IO = -20 μA; VCC = 2.0 V 1.9 2.0 - 1.9 - 1.9 - V IO = -20 μA; VCC = 4.5 V 4.4 4.5 - 4.4 - 4.4 - V IO = -20 μA; VCC = 6.0 V 5.9 6.0 - 5.9 - 5.9 - V IO = -4 mA; VCC = 4.5 V 3.98 4.32 - 3.84 - 3.7 - V IO = -5.2 mA; VCC = 6.0 V 5.48 5.81 - 5.34 - 5.2 - V VI = VIH or VIL LOW-level output voltage IO = 20 μA; VCC = 2.0 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 4.5 V - 0 0.1 - 0.1 - 0.1 V IO = 20 μA; VCC = 6.0 V - 0 0.1 - 0.1 - 0.1 V IO = 4 mA; VCC = 4.5 V - 0.15 0.26 - 0.33 - 0.4 V IO = 5.2 mA; VCC = 6.0 V - 0.16 0.26 - 0.33 - 0.4 V - - ±0.1 - ±1.0 - ±1.0 μA 74HC123 VIH VIL VOH VOL HIGH-level input voltage LOW-level input voltage II input leakage current ICC supply current VI = VCC or GND; IO = 0 A; VCC = 6.0 V - - 8.0 - 80 - 160 μA CI input capacitance - 3.5 - - - - - pF 74HC_HCT123 Product data sheet VI = VCC or GND; VCC = 6.0 V All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 6 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset Symbol Parameter Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max 74HCT123 VIH HIGH-level input voltage VCC = 4.5 V to 5.5 V 2.0 1.6 - 2.0 - 2.0 - V VIL LOW-level input voltage VCC = 4.5 V to 5.5 V - 1.2 0.8 - 0.8 - 0.8 V VOH VI = VIH or VIL; VCC = 4.5 V HIGH-level output voltage IO = -20 μA 4.4 4.5 - 4.4 - 4.4 - V 3.98 4.32 - 3.84 - 3.7 - V - 0 0.1 - 0.1 - 0.1 V - 0.15 0.26 - 0.33 - 0.4 V - - ±0.1 - ±1.0 - ±1.0 μA - - 8.0 - 80 - 160 μA pins nA, nB - 35 125 - 160 - 170 μA pin nRD - 50 180 - 225 - 245 μA - 3.5 - - - - - pF IO = -4 mA VOL VI = VIH or VIL; VCC = 4.5 V LOW-level output voltage IO = 20 μA IO = 4.0 mA II input leakage current ICC supply current VI = VCC or GND; IO = 0 A; VCC = 5.5 V ΔICC per input pin; IO = 0 A; additional supply current VI = VCC - 2.1 V; other inputs at VCC or GND; VCC = 4.5 V to 5.5 V CI input capacitance 74HC_HCT123 Product data sheet VI = VCC or GND; VCC = 5.5 V All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 7 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 10. Dynamic characteristics Table 7. Dynamic characteristics Voltages are referenced to GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit see Fig. 12. Symbol Parameter Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max VCC = 2.0 V - 83 255 - 320 - 385 ns VCC = 4.5 V - 30 51 - 64 - 77 ns VCC = 5 V; CL = 15 pF - 26 - - - - - ns VCC = 6.0 V - 24 43 - 54 - 65 ns VCC = 2.0 V - 66 215 - 270 - 325 ns VCC = 4.5 V - 24 43 - 54 - 65 ns VCC = 5 V; CL = 15 pF - 20 - - - - - ns - 19 37 - 46 - 55 ns VCC = 2.0 V - 19 75 - 95 - 110 ns VCC = 4.5 V - 7 15 - 19 - 22 ns VCC = 6.0 V - 6 13 - 16 - 19 ns VCC = 2.0 V 100 8 - 125 - 150 - ns VCC = 4.5 V 20 3 - 25 - 30 - ns VCC = 6.0 V 17 2 - 21 - 26 - ns VCC = 2.0 V 100 17 - 125 - 150 - ns VCC = 4.5 V 20 6 - 25 - 30 - ns VCC = 6.0 V 17 5 - 21 - 26 - ns VCC = 2.0 V 100 14 - 125 - 150 - ns VCC = 4.5 V 20 5 - 25 - 30 - ns VCC = 6.0 V 17 4 - 21 - 26 - ns CEXT = 100 nF; REXT = 10 kΩ - 450 - - - - - μs CEXT = 0 pF; REXT = 5 kΩ - 75 - - - - - ns - 110 - - - - - ns 74HC123 tpd propagation delay nRD, nA, nB to nQ or nQ; CEXT = 0 pF; REXT = 5 kΩ; see Fig. 9 [1] nRD (reset) to nQ or nQ; CEXT = 0 pF; REXT = 5 kΩ; see Fig. 9 VCC = 6.0 V tt tW transition time see Fig. 9 pulse width [1] nA LOW; see Fig. 10 nB HIGH; see Fig. 10 nRD LOW; see Fig. 11 nQ HIGH and nQ LOW; VCC = 5.0 V; see Fig. 10 and Fig. 11 trtrig retrigger time 74HC_HCT123 Product data sheet nA, nB; CEXT = 0 pF; REXT = 5 kΩ; VCC = 5.0 V; see Fig. 10 [2] [3] [4] All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 8 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset Symbol Parameter REXT Conditions 25 °C -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max external timing see Fig. 7 resistor VCC = 2.0 V 10 - 1000 - - - - kΩ VCC = 5.0 V 2 - 1000 - - - - kΩ CEXT external timing VCC = 5.0 V; see Fig. 7 capacitor [4] - - - - - - - pF CPD power dissipation capacitance [5] - 54 - - - - - pF VCC = 4.5 V - 30 51 - 64 - 77 ns VCC = 5 V; CL = 15 pF - 26 - - - - - ns VCC = 4.5 V - 27 46 - 58 - 69 ns VCC = 5 V; CL = 15 pF - 23 - - - - - ns VCC = 4.5 V - 28 51 - 64 - 77 ns VCC = 5 V; CL = 15 pF - 26 - - - - - ns VCC = 4.5 V - 23 46 - 58 - 69 ns VCC = 5 V; CL = 15 pF - 23 - - - - - ns - 7 15 - 19 - 22 ns nA LOW; see Fig. 10 20 3 - 25 - 30 - ns nB HIGH; see Fig. 10 20 5 - 25 - 30 - ns nRD LOW; see Fig. 11 20 7 - 25 - 30 - ns CEXT = 100 nF; REXT = 10 kΩ - 450 - - - - - μs CEXT = 0 pF; REXT = 5 kΩ - 75 - - - - - ns - 110 - - - - - ns 2 - 1000 - - - - kΩ - - - - - - - pF per monostable; VI = GND to VCC 74HCT123 tPHL HIGH to LOW propagation delay nRD, nA, nB to nQ or nQ; CEXT = 0 pF; REXT = 5 kΩ; see Fig. 9 nRD (reset) to nQ or nQ; CEXT = 0 pF; REXT = 5 kΩ; see Fig. 9 tPLH LOW to HIGH propagation delay nRD, nA, nB to nQ or nQ; CEXT = 0 pF; REXT = 5 kΩ; see Fig. 9 nRD (reset) to nQ or nQ; CEXT = 0 pF; REXT = 5 kΩ; see Fig. 9 tt transition time VCC = 4.5 V; see Fig. 9 tW pulse width VCC = 4.5 V nQ HIGH and nQ LOW; VCC = 5.0 V; see Fig. 10 and Fig. 11 trtrig retrigger time REXT external timing VCC = 5.0 V; see Fig. 7 resistor CEXT external timing VCC = 5.0 V; see Fig. 7 capacitor 74HC_HCT123 Product data sheet [1] nA, nB; CEXT = 0 pF; REXT = 5 kΩ; VCC = 5.0 V; see Fig. 10 [2] [3] [4] [4] All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 9 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset Symbol Parameter CPD [1] [2] [3] [4] [5] power dissipation capacitance Conditions 25 °C per monostable; VI = GND to VCC - 1.5 V [5] -40 °C to +85 °C -40 °C to +125 °C Unit Min Typ Max Min Max Min Max - 56 - - - - - pF tpd is the same as tPHL and tPLH; tt is the same as tTHL and tTLH For other REXT and CEXT combinations see Fig. 7. If CEXT > 10 nF, the next formula is valid. tW = K × REXT × CEXT, where: tW = typical output pulse width in ns; REXT = external resistor in kΩ; CEXT = external capacitor in pF; K = constant = 0.45 for VCC = 5.0 V and 0.55 for VCC = 2.0 V. The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is approximately 7 pF. The time to retrigger the monostable multivibrator depends on the values of REXT and CEXT. The output pulse width will only be extended when the time between the active-going edges of the trigger input pulses meets the minimum retrigger time. If CEXT >10 pF, the next formula (at VCC = 5.0 V) for the setup time of a retrigger pulse is valid: 0.9 1.05 trtrig = 30 + 0.19 × REXT × CEXT + 13 × REXT , where: trtrig = retrigger time in ns; CEXT = external capacitor in pF; REXT = external resistor in kΩ. The inherent test jig and pin capacitance at pins 15 and 7 (nREXT/CEXT) is 7 pF. When the device is powered-up, initiate the device via a reset pulse, when CEXT < 50 pF. CPD is used to determine the dynamic power dissipation (PD in μW). 2 2 2 PD = CPD x VCC x fi + Σ(CL x VCC x fo) + 0.75 x CEXT x VCC x fo + D x 16 × VCC where: fi = input frequency in MHz; fo = output frequency in MHz; D = duty factor in %; CL = output load capacitance in pF; VCC = supply voltage in V; CEXT = timing capacitance in pF; 2 Σ(CL x VCC x fo) sum of outputs. 001aaa611 106 tW (ns) (1) 105 (2) (3) 104 'K' factor (4) 0.6 103 102 10 0.4 1 10 102 103 104 CEXT (pF) 0.2 VCC = 5.0 V; Tamb = 25 °C. (1) REXT = 100 kΩ (2) REXT = 50 kΩ (3) REXT = 10 kΩ (4) REXT = 2 kΩ Fig. 7. 001aaa612 0.8 0 Typical output pulse width as a function of the external capacitor value 74HC_HCT123 Product data sheet 0 2 4 6 VCC (V) 8 CEXT = 10 nF; REXT = 10 kΩ to 100 kΩ. Tamb = 25 °C. Fig. 8. 74HC123 typical ‘K’ factor as function of VCC All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 10 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 10.1. Waveforms and test circuit VI VM nB input GND tW VI VM nA input GND tW VI VM nRD input GND tPLH tPLH tW VOH nQ output VY VM VX VOL tTHL tW VOH nQ output VOL tPHL (reset) tPLH tW VY VM VX tPHL tPHL tTLH tPLH (reset) tPHL 001aaa771 Measurement points are given in Table 8. VOL and VOH are typical voltage output levels that occur with the output load. Fig. 9. Propagation delays from inputs (nA, nB, nRD) to outputs (nQ, nQ) and output transition times nB input tW nA input trtrig tW nQ output tW tW tW mna521 nRD = HIGH Fig. 10. Output pulse control using retrigger pulse 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 11 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset nB input nRD input tW nQ output tW tW mna522 nA = LOW Fig. 11. Output pulse control using reset input nRD VI negative pulse tW 90 % VM 0V VI positive pulse 0V VM 10 % tf tr tr tf 90 % VM VM 10 % tW VCC G VI VCC VO DUT RT RL S1 open CL 001aad983 Test data is given in Table 8. Definitions test circuit: RT = Termination resistance should be equal to output impedance Zo of the pulse generator. CL = Load capacitance including jig and probe capacitance. RL = Load resistance. S1 = Test selection switch. Fig. 12. Test circuit for measuring switching times Table 8. Test data Type Input S1 position Load VI tr, tf CL RL tPHL, tPLH 74HC123 VCC 6 ns 15 pF, 50 pF 1 kΩ open 74HCT123 3V 6 ns 15 pF, 50 pF 1 kΩ open 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 12 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 11. Application information 11.1. Timing component connections The basic output pulse width is essentially determined by the values of the external timing components REXT and CEXT. CEXT (1) REXT GND nCEXT nREXT/CEXT 8 14 (6) 15 (7) 13 (5) 123 nA nB VCC nQ 1 (9) 2 (10) 4 (12) nQ 3 (11) nRD 001aaa854 (1) For minimum noise generation it is recommended to ground pins 6 (2CEXT) and 14 (1CEXT) externally to pin 8 (GND). Fig. 13. Timing component connections 11.2. Power-up considerations When the monostable is powered-up it may produce an output pulse, with a pulse width defined by the values of REXT and CEXT. This output pulse can be eliminated using the circuit shown in Fig. 14. CEXT REXT GND nCEXT nREXT/CEXT 8 14 (6) 15 (7) 123 nA nB VCC 13 (5) 1 (9) 2 (10) 4 (12) nQ nQ 3 (11) nRD RESET VCC 001aaa613 Fig. 14. Power-up output pulse elimination circuit 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 13 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 11.3. Power-down considerations A large capacitor CEXT may cause problems when powering-down the monostable due to the energy stored in this capacitor. When a system containing this device is powered-down or a rapid decrease of VCC to zero occurs, the monostable may sustain damage, due to the capacitor discharging through the input protection diodes. To avoid this possibility, use a damping diode (DEXT) preferably a germanium or Schottky type diode able to withstand large current surges and connect as shown in Fig. 15. DEXT CEXT REXT GND nCEXT nREXT/CEXT 8 14 (6) 15 (7) 123 nA nB VCC 13 (5) 1 (9) 2 (10) 4 (12) nQ nQ 3 (11) nRD 001aaa614 Fig. 15. Power-down protection circuit 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 14 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 12. Package outline SO16: plastic small outline package; 16 leads; body width 3.9 mm SOT109-1 D E A X c y HE v M A Z 16 9 Q A2 A (A 3) A1 pin 1 index θ Lp 1 L 8 e w M bp 0 2.5 detail X 5 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) mm 1.75 0.25 0.10 1.45 1.25 0.25 0.49 0.36 0.25 0.19 10.0 9.8 4.0 3.8 1.27 6.2 5.8 1.05 1.0 0.4 0.7 0.6 0.25 0.25 0.1 0.7 0.3 inches 0.069 0.010 0.057 0.004 0.049 0.01 0.019 0.0100 0.39 0.014 0.0075 0.38 0.16 0.15 0.05 0.039 0.016 0.028 0.020 0.01 0.01 0.004 0.028 0.012 0.244 0.041 0.228 θ o 8 o 0 Note 1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC SOT109-1 076E07 MS-012 JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 Fig. 16. Package outline SOT109-1 (SO16) 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 15 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset SSOP16: plastic shrink small outline package; 16 leads; body width 5.3 mm D SOT338-1 E A X c y HE v M A Z 9 16 Q A2 A (A 3) A1 pin 1 index θ Lp L 8 1 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HE L Lp Q v w y Z (1) θ mm 2 0.21 0.05 1.80 1.65 0.25 0.38 0.25 0.20 0.09 6.4 6.0 5.4 5.2 0.65 7.9 7.6 1.25 1.03 0.63 0.9 0.7 0.2 0.13 0.1 1.00 0.55 8o 0o Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT338-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-19 MO-150 Fig. 17. Package outline SOT338-1 (SSOP16) 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 16 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset TSSOP16: plastic thin shrink small outline package; 16 leads; body width 4.4 mm D SOT403-1 E A X c y HE v M A Z 9 16 Q A2 pin 1 index (A 3 ) A1 A θ Lp 1 L 8 detail X w M bp e 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (2) e HE L Lp Q v w y Z (1) θ mm 1.1 0.15 0.05 0.95 0.80 0.25 0.30 0.19 0.2 0.1 5.1 4.9 4.5 4.3 0.65 6.6 6.2 1 0.75 0.50 0.4 0.3 0.2 0.13 0.1 0.40 0.06 8o 0o Notes 1. Plastic or metal protrusions of 0.15 mm maximum per side are not included. 2. Plastic interlead protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT403-1 REFERENCES IEC JEDEC JEITA EUROPEAN PROJECTION ISSUE DATE 99-12-27 03-02-18 MO-153 Fig. 18. Package outline SOT403-1 (TSSOP16) 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 17 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset DHVQFN16: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads; SOT763-1 16 terminals; body 2.5 x 3.5 x 0.85 mm B D A A E A1 c detail X terminal 1 index area terminal 1 index area C e1 e b 2 7 y y1 C v M C A B w M C L 1 8 Eh e 16 9 15 10 Dh X 0 2.5 5 mm scale DIMENSIONS (mm are the original dimensions) UNIT A(1) max. A1 b c D (1) Dh E (1) Eh e e1 L v w y y1 mm 1 0.05 0.00 0.30 0.18 0.2 3.6 3.4 2.15 1.85 2.6 2.4 1.15 0.85 0.5 2.5 0.5 0.3 0.1 0.05 0.05 0.1 Note 1. Plastic or metal protrusions of 0.075 mm maximum per side are not included. REFERENCES OUTLINE VERSION IEC JEDEC JEITA SOT763-1 --- MO-241 --- EUROPEAN PROJECTION ISSUE DATE 02-10-17 03-01-27 Fig. 19. Package outline SOT763-1 (DHVQFN16) 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 18 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 13. Abbreviations Table 9. Abbreviations Acronym Abbreviation CMOS Complementary Metal Oxide Semiconductor DUT Device Under Test ESD ElectroStatic Discharge HBM Human Body Model MM Machine Model TTL Transistor-Transistor Logic 14. Revision history Table 10. Revision history Document ID Release date Data sheet status Change notice Supersedes 74HC_HCT123 v.11 20200903 Product data sheet - 74HC_HCT123 v.10 Modifications: • • • • The format of this data sheet has been redesigned to comply with the identity guidelines of Nexperia. Legal texts have been adapted to the new company name where appropriate. Section 1 and Section 2 updated. Table 4: Derating values for Ptot total power dissipation have been updated. 74HC_HCT123 v.10 20151203 Modifications: • 74HC_HCT123 v.9 20150119 Modifications: • 74HC_HCT123 v.8 20111216 Modifications: • 74HC_HCT123 v.7 20110825 74HC_HCT123 v.6 20110314 74HC_HCT123 v.5 Product data sheet - 74HC_HCT123 v.9 Type numbers 74HC123N and 74HCT123N (SOT38-4) removed. Product data sheet - 74HC_HCT123 v.8 Table 7: Power dissipation capacitance condition for 74HCT123 is corrected. - 74HC_HCT123 v.7 Product data sheet - 74HC_HCT123 v.6 Product data sheet - 74HC_HCT123 v.5 20090713 Product data sheet - 74HC_HCT123 v.4 74HC_HCT123 v.4 20060616 Product data sheet - 74HC_HCT123 v.3 74HC_HCT123 v.3 20040511 Product specification - 74HC_HCT123_CNV v.2 74HC_HCT123_CNV v.2 19980708 Product specification - - 74HC_HCT123 Product data sheet Product data sheet Legal pages updated. All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 19 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset 15. Legal information injury, death or severe property or environmental damage. Nexperia and its suppliers accept no liability for inclusion and/or use of Nexperia products in such equipment or applications and therefore such inclusion and/or use is at the customer’s own risk. Data sheet status Quick reference data — The Quick reference data is an extract of the product data given in the Limiting values and Characteristics sections of this document, and as such is not complete, exhaustive or legally binding. Document status [1][2] Product status [3] Definition Objective [short] data sheet Development This document contains data from the objective specification for product development. Preliminary [short] data sheet Qualification This document contains data from the preliminary specification. Product [short] data sheet Production This document contains the product specification. [1] [2] [3] Please consult the most recently issued document before initiating or completing a design. The term 'short data sheet' is explained in section "Definitions". The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status information is available on the internet at https://www.nexperia.com. Definitions Draft — The document is a draft version only. The content is still under internal review and subject to formal approval, which may result in modifications or additions. Nexperia does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information. Short data sheet — A short data sheet is an extract from a full data sheet with the same product type number(s) and title. A short data sheet is intended for quick reference only and should not be relied upon to contain detailed and full information. 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Nexperia takes no responsibility for the content in this document if provided by an information source outside of Nexperia. In no event shall Nexperia be liable for any indirect, incidental, punitive, special or consequential damages (including - without limitation - lost profits, lost savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on tort (including negligence), warranty, breach of contract or any other legal theory. Notwithstanding any damages that customer might incur for any reason whatsoever, Nexperia’s aggregate and cumulative liability towards customer for the products described herein shall be limited in accordance with the Terms and conditions of commercial sale of Nexperia. Right to make changes — Nexperia reserves the right to make changes to information published in this document, including without limitation specifications and product descriptions, at any time and without notice. This document supersedes and replaces all information supplied prior to the publication hereof. Suitability for use — Nexperia products are not designed, authorized or warranted to be suitable for use in life support, life-critical or safety-critical systems or equipment, nor in applications where failure or malfunction of an Nexperia product can reasonably be expected to result in personal 74HC_HCT123 Product data sheet Applications — Applications that are described herein for any of these products are for illustrative purposes only. Nexperia makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification. Customers are responsible for the design and operation of their applications and products using Nexperia products, and Nexperia accepts no liability for any assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the Nexperia product is suitable and fit for the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customer(s). Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products. Nexperia does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s applications or products, or the application or use by customer’s third party customer(s). Customer is responsible for doing all necessary testing for the customer’s applications and products using Nexperia products in order to avoid a default of the applications and the products or of the application or use by customer’s third party customer(s). Nexperia does not accept any liability in this respect. Limiting values — Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the device. Limiting values are stress ratings only and (proper) operation of the device at these or any other conditions above those given in the Recommended operating conditions section (if present) or the Characteristics sections of this document is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the quality and reliability of the device. Terms and conditions of commercial sale — Nexperia products are sold subject to the general terms and conditions of commercial sale, as published at http://www.nexperia.com/profile/terms, unless otherwise agreed in a valid written individual agreement. In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. Nexperia hereby expressly objects to applying the customer’s general terms and conditions with regard to the purchase of Nexperia products by customer. No offer to sell or license — Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication of any license under any copyrights, patents or other industrial or intellectual property rights. Export control — This document as well as the item(s) described herein may be subject to export control regulations. Export might require a prior authorization from competent authorities. Non-automotive qualified products — Unless this data sheet expressly states that this specific Nexperia product is automotive qualified, the product is not suitable for automotive use. It is neither qualified nor tested in accordance with automotive testing or application requirements. Nexperia accepts no liability for inclusion and/or use of non-automotive qualified products in automotive equipment or applications. In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall use the product without Nexperia’s warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the product for automotive applications beyond Nexperia’s specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies Nexperia for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond Nexperia’s standard warranty and Nexperia’s product specifications. Translations — A non-English (translated) version of a document is for reference only. The English version shall prevail in case of any discrepancy between the translated and English versions. Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 20 / 21 74HC123; 74HCT123 Nexperia Dual retriggerable monostable multivibrator with reset Contents 1. General description...................................................... 1 2. Features and benefits.................................................. 1 3. Ordering information....................................................2 4. Functional diagram.......................................................2 5. Pinning information......................................................4 5.1. Pinning.........................................................................4 5.2. Pin description............................................................. 4 6. Functional description................................................. 5 7. Limiting values............................................................. 5 8. Recommended operating conditions..........................6 9. Static characteristics....................................................6 10. Dynamic characteristics............................................ 8 10.1. Waveforms and test circuit...................................... 11 11. Application information............................................13 11.1. Timing component connections............................... 13 11.2. Power-up considerations..........................................13 11.3. Power-down considerations..................................... 14 12. Package outline........................................................ 15 13. Abbreviations............................................................ 19 14. Revision history........................................................19 15. Legal information......................................................20 © Nexperia B.V. 2020. All rights reserved For more information, please visit: http://www.nexperia.com For sales office addresses, please send an email to: salesaddresses@nexperia.com Date of release: 3 September 2020 74HC_HCT123 Product data sheet All information provided in this document is subject to legal disclaimers. Rev. 11 — 3 September 2020 © Nexperia B.V. 2020. All rights reserved 21 / 21