M74HC294

M74HC294 PROGRAMMABLE DIVIDER/TIMER s s s s s s s HIGH SPEED : fMAX = 75 MHz (TYP.) at VCC = 6V LOW POWER DISSIPATION: ICC =4µA(MAX.) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.) SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 294 DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE M74HC294B1R M74HC294M1R T&R M74HC294RM13TR M74HC294TTR DESCRIPTION The M74HC294 is an high speed CMOS PROGRAMMABLE DIVIDER/TIMER fabricated with silicon gate C2MOS technology. This device is a programmable frequency divider and has two clock inputs, either one may be used for clock gating. (see the function table). The M74HC294 can divide from 22 to 215. This device feature an active-low clear input to initialize the state of all flip-flops. To facilitate incoming inspection, test points (TP) are provided. All inputs are equipped with protection circuits against static discharge and transient excess voltage. This device has Q output with "Totem Pole" configuration and test point TP with "Open Drain" output configuration. PIN CONNECTION AND IEC LOGIC SYMBOLS August 2001 1/11 M74HC294 INPUT AND OUTPUT EQUIVALENT CIRCUIT (TOTEM POLE OUTPUT) INPUT AND OUTPUT EQUIVALENT CIRCUIT (OPEN DRAIN OUTPUT) PIN DESCRIPTION PIN No 4, 5 1, 2, 14, 15 3 11 7 8 16 SYMBOL CLK1, CLK2 A to E TP CLR Q GND Vcc NAME AND FUNCTION Input Clock Program Inputs Test Point Outputs Clear (Active LOW) Output Ground (0V) Positive Supply Voltage TRUTH TABLE CLR L H H H H L H X X H NO CHANGE CLK1 X CLK2 X L Q OUTPUT MODE CLEARED TO L UP COUNT 2/11 M74HC294 LOGIC DIAGRAM This logic diagram has not be used to estimate propagation delays 3/11 M74HC294 FUNCTIONAL TABLE FREQUENCY DIVISION PROGRAMMING INPUTS Q D L L L L L L L L H H H H H H H H C L L L L H H H H L L L L H H H H B L L H H L L H H L L H H L L H H A L H L H L H L H L H L H L H L H BINARY Inhibit Inhibit 22 23 2 4 TP DECIMAL BINARY Inhibit Inhibit Inhibit Inhibit 4 29 8 29 9 DECIMAL Inhibit Inhibit 512 512 512 512 512 4 8 16 32 64 128 256 512 16 2 25 2 6 32 29 64 2 9 27 28 2 2 2 9 10 11 128 Disabled Low 256 22 512 23 1.024 2 4 5 2.048 2 8.192 16.384 212 213 214 215 4.096 26 27 28 32.768 29 ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 25 ± 50 500(*) -65 to +150 300 Unit V V V mA mA mA mA mW °C °C ICC or IGND DC VCC or Ground Current PD Power Dissipation Tstg TL Storage Temperature Lead Temperature (10 sec) Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied (*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C 4/11 M74HC294 RECOMMENDED OPERATING CONDITIONS Symbol VCC VI VO Top tr, tf Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time VCC = 2.0V VCC = 4.5V VCC = 6.0V Parameter Value 2 to 6 0 to VCC 0 to VCC -55 to 125 0 to 1000 0 to 500 0 to 400 Unit V V V °C ns ns ns DC SPECIFICATIONS Test Condition Symbol Parameter VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 4.5 6.0 VOL Low Level Output Voltage (Q) 2.0 4.5 6.0 4.5 6.0 VOL Low Level Output Voltage (TP) 2.0 4.5 6.0 4.5 6.0 II ICC Input Leakage Current Quiescent Supply Current 6.0 6.0 IO=-20 µA IO=-20 µA IO=-20 µA IO=-4.0 mA IO=-5.2 mA IO=20 µA IO=20 µA IO=20 µA IO=4.0 mA IO=5.2 mA IO=20 µA IO=20 µA IO=20 µA IO=1.0 mA IO=1.3 mA VI = VCC or GND VI = VCC or GND TA = 25°C Min. 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 4.18 5.68 2.0 4.5 6.0 4.31 5.8 0.0 0.0 0.0 0.17 0.18 0.0 0.0 0.0 0.17 0.18 0.1 0.1 0.1 0.26 0.26 0.1 0.1 0.1 0.26 0.26 ± 0.1 4 1.9 4.4 5.9 4.13 5.63 0.1 0.1 0.1 0.33 0.33 0.1 0.1 0.1 0.33 0.33 ±1 40 Typ. Max. Value -40 to 85°C Min. 1.5 3.15 4.2 0.5 1.35 1.8 1.9 4.4 5.9 4.10 5.60 0.1 0.1 0.1 0.40 0.40 0.1 0.1 0.1 0.40 0.40 ±1 80 µA µA V V V Max. -55 to 125°C Min. 1.5 3.15 4.2 0.5 1.35 1.8 Max. V Unit VIH High Level Input Voltage Low Level Input Voltage High Level Output Voltage (Q) VIL V VOH 5/11 M74HC294 AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns) Test Condition Symbol Parameter VCC (V) 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 2.0 4.5 6.0 TA = 25°C Min. Typ. 30 8 7 116 29 25 145 43 37 110 34 29 20 64 75 40 8 7 40 10 9 Max. 75 15 13 225 45 38 330 66 56 260 52 44 5 26 31 75 15 13 100 20 17 0 0 0 95 19 16 125 25 21 0 0 0 Value -40 to 85°C Min. Max. 95 19 16 280 56 48 415 83 71 325 65 55 4 21 25 110 22 20 150 30 26 0 0 0 -55 to 125°C Min. Max. 110 22 19 340 68 57 15 84 390 78 66 ns Unit tTLH tTHL Output Transition Time (Q) tTLH tTHL Output Transition Time (TP) tPLH tPHL Propagation Delay Time (CLK - Q) tPHL Propagation Delay Time (CLR - Q) Maximum Clock Frequency Minimum Pulse Width (CLK) Minimum Pulse Width (CLR) Minimum Removal Time ns ns ns fMAX 6.0 32 38 MHz tW(L) tW(H) tW(L) ns ns tREM ns CAPACITIVE CHARACTERISTICS Test Condition Symbol Parameter VCC (V) 5.0 5.0 TA = 25°C Min. Typ. 5 23 Max. 10 Value -40 to 85°C Min. Max. 10 -55 to 125°C Min. Max. 10 pF pF Unit CIN CPD Input Capacitance Power Dissipation Capacitance (note 1) 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC 6/11 M74HC294 TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance) RT = ZOUT of pulse generator (typically 50Ω) SWITCHING CHARACTERISTICS TEST WAVEFORM : (f=1MHz; 50% duty cycle) 7/11 M74HC294 Plastic DIP-16 (0.25) MECHANICAL DATA mm. DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 TYP MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 TYP. MAX. inch P001C 8/11 M74HC294 SO-16 MECHANICAL DATA DIM. A a1 a2 b b1 C c1 D E e e3 F G L M S 3.8 4.6 0.5 9.8 5.8 1.27 8.89 4.0 5.3 1.27 0.62 8° (max.) 0.149 0.181 0.019 10 6.2 0.35 0.19 0.5 45° (typ.) 0.385 0.228 0.050 0.350 0.157 0.208 0.050 0.024 0.393 0.244 0.1 mm. MIN. TYP MAX. 1.75 0.2 1.65 0.46 0.25 0.013 0.007 0.019 0.003 MIN. inch TYP. MAX. 0.068 0.007 0.064 0.018 0.010 PO13H 9/11 M74HC294 TSSOP16 MECHANICAL DATA mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0° 0.45 0.60 0.05 0.8 0.19 0.09 4.9 6.2 4.3 5 6.4 4.4 0.65 BSC 8° 0.75 0° 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 5.1 6.6 4.48 0.002 0.031 0.007 0.004 0.193 0.244 0.169 0.197 0.252 0.173 0.0256 BSC 8° 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0089 0.201 0.260 0.176 inch A A2 A1 b e K c L E D E1 PIN 1 IDENTIFICATION 1 0080338D 10/11 M74HC294 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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