74ACT11543
OCTAL REGISTERED TRANSCEIVER
WITH 3-STATE OUTPUTS

SCAS136 - JULY 1990 - REVISED APRIL 1993

Copyright © 1993, Texas Instruments Incorporated

features

• Inputs Are TTL-Voltage Compatible
• 3-State True Outputs
• Back-to-Back Registers for Storage
• Flow-Through Architecture Optimizes PCB Layout
• Center-Pin V_CC and GND Configurations Minimize High-Speed Switching Noise
• EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m Process
• 500-mA Typical Latch-Up Immunity at 125°C

  EPIC is a trademark of Texas Instruments Incorporated.

description

This 8-bit registered transceiver contains two sets of D-type latches for temporary storage of data flowing in either direction. Separate latch enable ( or ) and output enable ( or ) inputs are provided for each register to permit independent control in either direction of data flow.

The A-to-B enable () input must be low in order to enter data from A or to output data to B. Having low and low makes the A-to-B latches transparent; a subsequent low-to-high transition of puts the A latches in the storage mode. With and both low, the 3-state B outputs are active and reflect the data present at the output of the A latches. Data flow from B-to-A is similar, but requires the use of , , and inputs.

The 74ACT11543 is characterized for operation from - 40°C to 85°C.