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CY54FCT543T Datasheet 8-BIT LATCHED REGISTERED TRANSCEIVERS

Manufacturer: Texas Instruments

General Description

The ’FCT543T octal latched transceivers contain two sets of eight D-type latches with separate latch-enable (LEAB, LEBA) and output-enable (OEAB, OEBA) inputs for each set to permit independent control of input and output in either direction of data flow.

For data flow from A to B, for example, the A-to-B enable (CEAB) input must be low in order to enter data from A or to take data from B, as indicated in the function table.

With CEAB low, a low signal on the A-to-B latch-enable (LEAB) input makes the A-to-B latches transparent;

Overview

D Function, Pinout, and Drive Compatible With FCT and F Logic D Reduced VOH (Typically = 3.3 V) Versions of Equivalent FCT Functions D Edge-Rate Control Circuitry for Significantly Improved Noise Characteristics D Ioff Supports Partial-Power-Down Mode Operation D Matched Rise and Fall Times D Fully Compatible With TTL Input and Output Logic Levels D 3-State Outputs D ESD Protection Exceeds JESD 22 – 2000-V Human-Body Model (A114-A) – 200-V Machine Model (A115-A) – 1000-V Charged-Device Model (C101) D Separation Controls for Data Flow in Each Direction D Back-to-Back Latches for Storage D CY54FCT543T – 48-mA Output Sink Current – 12-mA Output Source Current D CY74FCT543T – 64-mA Output Sink Current – 32-mA Output Source Current CY54FCT543T, CY74FCT543T 8-BIT LATCHED REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS SCCS030A – MAY 1994 – REVISED OCTOBER 2001 CY54FCT543T .

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