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CY74FCT573T Datasheet(PDF) 1 Page - Texas Instruments |
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CY74FCT573T Datasheet(HTML) 1 Page - Texas Instruments |
1 / 8 page 8-Bit Latches CY54/74FCT373T CY54/74FCT573T SCCS021 - May 1994 - Revised February 2000 Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. Copyright © 2000, Texas Instruments Incorporated Features • Function and pinout compatible with FCT, and F logic • FCT-C speed at 4.2 ns max. (Com’l), FCT-A speed at 5.2 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 • ESD > 2000V • Matched rise and fall times • Extended commercial range of −40˚C to +85˚C • 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) Functional Description The FCT373T and FCT573T consist of eight latches with three-state outputs for bus organized applications. When latch enable (LE) is HIGH, the flip-flops appear transparent to the data. Data that meets the required set-up times are latched when LE transitions from HIGH to LOW. Data appears on the bus when the (OE) is LOW. When output enable is HIGH, the bus output is in the impedance state. In this mode, data may be entered into the latches. The FCT573T is identical to the FCT373T except for the flow-through pinout, which simplifies board design. The outputs are designed with a power-off disable feature to allow for live insertion of boards. Logic Block Diagram Pin Configurations 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 13 14 VCC 15 DIP/SOIC/QSOP Top View O0 D0 D1 O2 D2 D3 O3 D7 D6 O6 O5 D5 D4 O4 LE OE GND O7 O1 1 2 3 4 5 6 7 8 9 10 11 12 16 17 18 19 20 13 14 VCC 15 DIP/SOIC/QSOP Top View D0 D1 D2 D4 D5 D6 D7 O1 O2 O3 O4 O5 O6 O7 LE OE GND O0 D3 LE OE D0 O0 D1 O1 D2 O2 D3 O3 D4 O4 D5 O5 D6 O6 D7 O7 CP D Q O0 D0 LE OE CP D Q O1 D1 CP D Q O2 D2 CP D Q O3 D3 CP D Q O4 D4 CP D Q O5 D5 CP D Q O6 D6 CP D Q O7 D7 FCT373T FCT573T Logic Symbol |
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