The MC74HC573A is an octal 3-state noninverting transparent latch that utilizes high-performance silicon-gate CMOS technology. It has the same pinout as the LS573 and is compatible with standard CMOS outputs and LSTTL outputs with pullup resistors. The outputs change asynchronously when the latch enable is high, making the latch appear transparent to data. When the latch enable goes low, data meeting the setup and hold time is latched. The HC573A is functionally equivalent to the HC373A but has the data inputs on the opposite side of the package to facilitate PCB layout.
The MC74HC573A is an octal 3‑state noninverting transparent latch compatible with LS573 pinout. It features CMOS, NMOS and TTL compatible outputs and operates from 2.0 V to 6.0 V. The device provides 15 LSTTL loads per output and a low input current of 1 µA.
The data sheet includes electrical characteristics, maximum ratings, timing requirements, package dimensions for PDIP‑20, SOIC‑20 and TSSOP‑20, and ordering information. It also references ON Semiconductor’s soldering and mounting techniques manual for Pb‑Free handling.