TC7MB3244FT

TC7MB3244FT/FK Toshiba CMOS Digital Integrated Circuit Silicon Monolithic TC7MB3244FT, TC7MB3244FK Octal Bus Switch The TC7MB3244 provides eight bits of high-speed TTL-compatible bus switching in a standard ’244 device pinout. The low on resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as two 4-bit low-impedance switches with separate output-enable ( OE ) inputs. When OE is low, the switch is on and data can flow from port A to port B, or vice versa. When OE is high, the switch is open and a high-impedance state exists between the two ports. All inputs are equipped with protection circuits against static discharge. TC7MB3244FT TC7MB3244FK Features • • • • • • • Operating voltage: VCC = 4.5 to 5.5 V High speed: tpd = 0.25 ns (max) Low on resistance: RON = 5 Ω (typ.) ESD performance: Machine model ≥ ±200 V Human body model ≥ ±2000 V Compatible with TTL outputs (control inputs) Package: TSSOP20,VSSOP20 (US20) Pin compatible with the 74xx244 type. Functionally equivalent to (FST/CBT) 3244. Weight TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 : 0.08 g (typ.) : 0.03 g (typ.) Pin Assignment (top view) 1OE 1A1 2B4 1A2 2B3 1A3 2B2 1A4 2B1 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 (top view) VCC 2OE 1B1 2A4 1B2 2A3 1B3 2A2 1B4 2A1 GND 10 1 2008-09-01 TC7MB3244FT/FK Truth Table Inputs Function A port = B port Disconnect OE L H System Diagram 1A1 1B1 2A1 2B1 1A4 1B4 2A4 2B4 1OE 2OE Absolute Maximum Ratings (Note) Characteristics Power supply range DC input voltage DC switch voltage Input diode current Continuous channel circuit Power dissipation DC VCC/ground current Storage temperature Symbol VCC VIN VS IIK IS PD ICC/IGND Tstg Rating −0.5 to 7.0 −0.5 to 7.0 −0.5 to 7.0 −50 128 180 ±100 −65 to 150 Unit V V V mA mA mW mA °C Note: Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction. Using continuously under heavy loads (e.g. the application of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temperature/current/voltage, etc.) are within the absolute maximum ratings and the operating ranges. Please design the appropriate reliability upon reviewing the Toshiba Semiconductor Reliability Handbook (“Handling Precautions”/“Derating Concept and Methods”) and individual reliability data (i.e. reliability test report and estimated failure rate, etc). Operating Ranges (Note) Characteristics Supply voltage Input voltage Switch voltage Operating temperature Input rise and fall time Symbol VCC VIN VS Topr dt/dv Rating 4.5 to 5.5 0 to 5.5 0 to 5.5 −40 to 85 0 to 10 Unit V V V °C ns/V Note: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. 2 2008-09-01 TC7MB3244FT/FK Electrical Characteristics DC Characteristics (Ta = −40 to 85°C) Characteristics “H” level Input voltage “L” level Input leakage current Power off leakage current Off-STATE leakage current (switch off) ISZ Symbol VIH VIL IIN IOFF VIN = 0 to 5.5 V A, B, OE = 0 to 5.5 V A, B = 0 to 5.5 V, OE = VCC VIS = 0 V VIS = 2.4 V, IIS = 15 mA Quiescent supply current Increase in ICC per input ICC ΔICC VIN = VCC or GND, IOUT = 0 VIN = 3.4 V (one input) IIS = 64 mA IIS = 30 mA Test Condition VCC (V) ⎯ ⎯ 4.5to5.5 4.5to5.5 4.5to5.5 0 4.5to5.5 4.5 4.5 4.5 5.5 5.5 2.0 ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ ⎯ Min Typ. (Note 1) ⎯ ⎯ ⎯ ⎯ ⎯ 5 5 10 ⎯ ⎯ Max ⎯ V 0.8 ±1.0 ±1.0 ±1.0 7 7 15 10 2.5 μA mA Ω μA μA μA Unit ON resistance (Note 2) RON Note 1: Typical values are at VCC = 5 V, Ta = 25°C. Note 2: Measured by the voltage drop between A and B pins at the indicated current through the switch. On resistance is determined by the lower of the voltages on the two (A or B) pins. AC Characteristics (Ta = −40 to 85°C) Characteristics Propagation delay time (bus to bus) Output enable time Symbol tpLH tpHL tpZL tpZH Output disable time tpLZ tpHZ Figure 1, Figure 3 4.5 ⎯ 5.0 ns Figure 1, Figure 3 4.5 ⎯ 5.0 ns Test Condition VCC (V) Figure 1, Figure 2 (Note) 4.5 ⎯ 0.25 ns Min Max Unit Note: This parameter is guaranteed by design but is not tested. The bus switch contributes no propagation delay other than the RC delay of the typical On resistance of the switch and the 50 pF load capacitance, when driven by an ideal voltage the source (zero output impedance). Capacitive Characteristics (Ta = 25°C) Characteristics Control pin input capacitance Switch terminal capacitance Symbol CIN CI/O OE = VCC Test Condition VCC (V) (Note) (Note) 5.0 5.0 3 10 pF pF Typ. Unit Note: Parameter guaranteed by design. 3 2008-09-01 TC7MB3244FT/FK AC Test Circuit Open 7.0 V GND Measure CL = 50 pF RL = 500 Ω CL RL Switch RL Parameter tpLH, tpHL tpLZ, tpZL tpHZ, tpZH Switch Open 7.0 V Open Output Figure 1 AC Waveform tr 2.5 ns Input (A, B) tf 2.5 ns 90% 1.5 V 10% 3.0 V GND Output (B, A) tpLH VOH 1.5 V tpHL VOL Figure 2 tpLH, tpHL tr 2.5 ns Output Enable ( OE ) tpLZ Output (A, B) Low to Off to Low tpHZ Output (A, B) High to Off to High Outputs enabled tf 2.5 ns 90% 1.5 V 10% tpZL 3.5 V 1.5 V VOL + 0.3 V VOH − 0.3 V 1.5 V GND Outputs disabled Outputs enabled tpZH VOL VOH 3.0 V GND Figure 3 tpLZ, tpHZ, tpZL, tpZH 4 2008-09-01 TC7MB3244FT/FK Package Dimensions Weight: 0.08g (typ.) 5 2008-09-01 TC7MB3244FT/FK Package Dimensions Weight: 0.03g (typ.) 6 2008-09-01 TC7MB3244FT/FK RESTRICTIONS ON PRODUCT USE • Toshiba Corporation, and its subsidiaries and affiliates (collectively “TOSHIBA”), reserve the right to make changes to the information in this document, and related hardware, software and systems (collectively “Product”) without notice. • This document and any information herein may not be reproduced without prior written permission from TOSHIBA. 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