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CY74FCT2373T データシート(PDF) 1 Page - Texas Instruments |
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CY74FCT2373T データシート(HTML) 1 Page - Texas Instruments |
1 / 6 page 8-Bit Latches CY74FCT2373T CY74FCT2573T SCCS039 - September 1994 - Revised March 2000 Data sheet acquired from Cypress Semiconductor Corporation. Data sheet modified to remove devices not offered. Copyright © 2000, Texas Instruments Incorporated 1CY74FCT2573T Features • Function and pinout compatible with the fastest bipolar logic •25 Ω output series resistors to reduce transmission line refelection noise • FCT-C speed at 4.7 ns max. • 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 12 mA Source current 15 mA • Extended commercial temp. range of –40˚C to +85˚C Functional Description The FCT2373T and FCT2573T are 8-bit, high-speed CMOS TTL-compatible buffered latches with three-state outputs that are ideal for driving high-capacitance loads, such as memory and address buffers. On-chip 25 Ω termination resistors have been added to the outputs to reduce system noise caused by reflections. FCT2373T can be used to replace FCT373T, and FCT2573T to replace FCT573T to reduce noise in an existing design. When latch enable (LE) is HIGH, the flip-flops appear trans- parent 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 output enable (OE) is LOW. When output enable is HIGH, the bus output is in the high impedance state. In this mode, data can still be entered into the latches. The outputs are designed with a power-off disable feature to allow for live insertion of boards. FCT2373T-1 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 SOIC/QSOP Top View O0 D0 D1 O2 D2 D3 O3 D7 D6 O6 O5 D5 D4 O4 LE OE GND O7 O1 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 FCT2373T-2 Logic Symbol FCT2373T LE OE D0 O0 D1 O1 D2 O2 D3 O3 D4 O4 D5 O5 D6 O6 D7 O7 FCT2373T-4 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 D0 D1 D2 D4 D5 D6 D7 O1 O2 O3 O4 O5 O6 O7 LE OE GND O0 D3 FCT2373T-6 |
同様の部品番号 - CY74FCT2373T |
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同様の説明 - CY74FCT2373T |
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