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CY54FCT244TSOIC Datasheet(PDF) 1 Page - Texas Instruments |
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CY54FCT244TSOIC Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page 8-Bit Buffers/Line Drivers CY54/74FCT240T CY54/74FCT244T SCCS017 - May 1994 - Revised February 2000 Copyright © 2000, Texas Instruments Incorporated Features • Function, pinout, and drive compatible with FCT and F logic • FCT-D speed at 3.6 ns max. (Com’l FCT244 only), FCT-C speed at 4.1 ns max. (Com’l), FCT-A speed at 4.8 ns max. (Com’l) • Reduced VOH (typically = 3.3V) versions of equivalent FCT functions • Edge-rate control circuitry for significantly improved noise characteristics • Power-off disable feature • ESD > 2000V • Matched rise and fall times • Fully compatible with TTL input and output logic levels • Extended commercial range of −40˚C to +85˚C • Sink current 64 mA (Com’l), 48 mA (Mil) Source current 32 mA (Com’l), 12 mA (Mil) Functional Description The FCT240T and FCT244T are octal buffers and line drivers designed to be employed as memory address drivers, clock drivers, and bus-oriented transmitters/receivers. The devices provide speed and drive capabilities equivalent to their fastest bipolar logic counterparts while reducing power consumption. The input and output voltage levels allow direct interface with TTL, NMOS, and CMOS devices without external components. The outputs are designed with a power-off disable feature to allow for live insertion of boards. Logic Block Diagram FCT240T–2 4 8 9 10 11 12 76 5 1516 17 18 3 2 1 20 13 14 19 DB3 VCC GND Top View LCC OEA FCT240T–1 DA0 OB0 OB3 DB2 OA3 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 13 14 OEA DA0 OB0 DA1 OB1 DA2 DA3 GND VCC FCT240T–3 15 DIP/SOIC/QSOP Top View OEB OB2 OB3 OEB OA0 OA2 DB2 DB3 OA3 DB0 OA1 DB1 OEB OEA DA0 OB0 DA1 OB1 DA2 DA3 OB2 OB3 OA0 OA2 DB2 DB3 OA3 DB0 OA1 DB1 Pin Configurations 4 8 9 10 11 12 76 5 1516 17 18 3 2 1 20 13 14 19 DB3 VCC GND Top View LCC OEA DA0 OB0 OB3 DB2 OA3 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 13 14 OEA DA0 OB0 DA1 OB1 DA2 DA3 GND VCC 15 DIP/SOIC/QSOP Top View OEB OB2 OB3 OEB OA0 OA2 DB2 DB3 OA3 DB0 OA1 DB1 OEB OEA DA0 OB0 DA1 OB1 DA2 DA3 OB2 OB3 OA0 OA2 DB2 DB3 OA3 DB0 OA1 DB1 FCT240T–4 FCT240T–5 FCT240T–6 FCT240T FCT240T FCT244T FCT244T FCT240T FCT244T |
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