74ACT11873
DUAL 4-BIT D-TYPE LATCH
WITH 3-STATE OUTPUTS

SCAS096 - FEBRUARY 1990 - REVISED APRIL 1993

Copyright © 1993, Texas Instruments Incorporated

features

• Inputs Are TTL-Voltage Compatible
• 3-State Buffer-Type Outputs Drive Bus Lines Directly
• Bus-Structured Pinout
• Flow-Through Architecture to Optimize PCB Layout
• Center-Pin V_CC and GND Configurations to Minimize High-Speed Switching Noise
• EPIC^TM (Enhanced-Performance Implanted CMOS) 1-m Process
• 500-mA Typical Latch-Up Immunity at 125°C
• Package Options Include Plastic Small- Outline Packages and Standard Plastic 300-mil DIPs

  EPIC is a trademark of Texas Instruments Incorporated.

description

These dual 4-bit registers feature 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.

The dual 4-bit latch is transparent D-type. When the latch enable input (1C or 2C) is high, the (Q) outputs will follow the data (D) inputs in true form, according to the function table. When the latch enable input is taken low, the outputs will be latched. When goes low, the Q outputs go low independently of enable C. The outputs are in a high-impedance state when (output control) is at a high logic level.

The 74ACT11873 is characterized for operation from - 40°C to 85°C.