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CY74FCT377CTQCT Datasheet(PDF) 1 Page - Texas Instruments |
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CY74FCT377CTQCT Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page 8-Bit Register CY54/74FCT377T SCCS023 - May1994 - Revised March 2000 Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. Copyright © 2000, Texas Instruments Incorporated 1CY54/74FCT377T Features • Function, pinout and drive compatible with FCT and F logic • FCT-C speed at 5.2 ns max. (Com’l) FCT-A speed at 7.2 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 • Matched rise and fall times • ESD > 2000V • Fully compatible with TTL input and output logic levels • Sink Current 64 mA (Com’l), 32 mA (Mil) Source Current 32 mA (Com’l), 12 mA (Mil) • Clock Enable for address and data synchronization application • Eight edge-triggered D flip-flops • Extended commercial range of −40˚C to +85˚C Functional Description The FCT377T has eight triggered D-type flip-flops with individual D inputs. The common buffered clock inputs (CP) loads all flip-flops simultaneously when the Clock Enable (CE) is LOW. The register is fully edge-triggered. The state of each D input, one set-up time before the LOW-to-HIGH clock transition, is transferred to the corresponding flip-flop’s O out- put. The CE input must be stable only one set-up time prior to the LOW-to-HIGH clock transition for predictable operation. The outputs are designed with a power-off disable feature to allow for live insertion of boards. Logic Block Diagram Pin Configurations 4 8 9 10 11 12 76 5 1516 17 18 3 2 1 20 13 14 19 CP VCC GND Top View LCC CE O0 D0 O3 D4 O4 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 13 14 VCC 15 SOIC/QSOP Top View O7 O0 D0 D1 O1 O2 D2 D3 O3 D7 D6 O6 O5 D5 D4 O4 CP CE GND CP D Q O0 D1 D2 D3 D4 D5 D6 D7 CP CE O7 CP CE D0 O0 D1 O1 D2 O2 D3 O3 D4 O4 D5 O5 D6 O6 D7 O7 D0 CP D Q O1 CP D Q O2 CP D Q O3 CP D Q O4 CP D Q O5 CP D Q O6 CP D Q O7 Logic Symbol |
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