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CY74FCT2827TSOIC Datasheet(PDF) 1 Page - Texas Instruments |
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CY74FCT2827TSOIC Datasheet(HTML) 1 Page - Texas Instruments |
1 / 6 page 10-Bit Buffer CY74FCT2827T SCCS045 - May 1994 - Revised March 2000 Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. Copyright © 2000, Texas Instruments Incorporated 1CY74FCT2827T Features • Function and pinout compatible with FCT, F, and AM29827 logic • FCT-C speed at 5.0 ns max. (Com’l), FCT-A speed at 8.0 ns max. (Com’l) • 25 Ω output series resistors to reduce transmission line reflection noise • 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 temp. range of –40˚C to +85˚C • Sink current 12 mA Source current 15 mA Functional Description The FCT2827T 10-bit bus driver provides high-performance bus interface buffering for wide data/address paths or buses carrying parity. This 10-bit buffer has NAND-ed output enables for maximum control flexibility. The FCT2827T is designed for high-capacitance load drive capability, while providing low-capaci- tance bus loading at both inputs and outputs. All inputs have clamp diodes and all outputs are designed for low-capacitance bus loading in the high impedance state. On-chip termination resistors have been added to the outputs to reduce system noise caused by re- flections. The FCT2827T can be used to replace the FCT827T to reduce noise in an existing design. The outputs are designed with a power-off disable feature to allow for live insertion of boards. Logic Block Diagram Pin Configurations FCT2827T–3 Y0 OE1 Y1 Y2 Y3 Y4 Y5 Y8 Y9 Y6 Y7 D0 D1 D2 D3 D4 D5 D8 D9 D6 D7 OE2 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 24 23 22 21 13 14 VCC FCT2827T–2 15 SOIC/QSOP Top View OE1 D1 D2 D3 D4 D5 D6 D7 D8 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 GND D0 D9 Y0 Y9 OE2 Function Table[1] Inputs Outputs Function OE1 OE2 D Y L L L L L H L H Transparent H X X H X X Z Z Three-State Note: 1. H = HIGH Voltage Level. L = LOW Voltage Level. X = Don’t Care. |
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