74AC11873
DUAL 4-BIT D-TYPE LATCH
WITH 3-STATE OUTPUTS

SCAS095 - JANUARY 1990 - REVISED APRIL 1993

Copyright © 1993, Texas Instruments Incorporated

features

• 3-State Buffer-Type Outputs Drive Bus Lines Directly
• Bus-Structured Pinout
• 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 dual 4-bit transparent D-type latch features 3-state outputs designed specifically for bus driving. This makes these devices particularly suitable for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.

When the latch-enable (1LE or 2LE) input is high, the Q outputs will follow the data (D) inputs in true form, according to the function table. When LE is taken low, the outputs will be latched. When the clear (1 or 2) input goes low, the Q outputs go low independently of LE. The outputs are in a high-impedance state when the output-control (1 or 2) input is at a high logic level.

The 74AC11873 is characterized for operation from -40°C to 85°C.