MC74HC373ADT

Latches Overview

The MC74HC373ADT is an octal 3-state non-inverting transparent latch manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and features low input current with high noise immunity characteristic of CMOS devices. The device contains eight latches that are transparent when the Latch Enable signal is high, allowing Q outputs to follow Data Inputs. When Latch Enable goes low, data meeting setup and hold times becomes latched. The Output Enable input controls the high-impedance state without affecting latch content.

Latches Feature Summary

• Transparent D-type latch functionality where outputs follow inputs during enable
• Three-state output capability controlled independently of latch state
• Compatible with standard CMOS outputs and LSTTL loads via pullup resistors

Latches Applications

• Data storage in digital systems
• Bus-oriented transmission
• Clock-driven registers

Latches Procurement Notes

Verify the specific suffix 'DT' corresponds to the TSSOP-20 package (CASE 948E) as listed in the ordering information. Confirm RoHS compliance and Pb-free status through official documentation. Ensure moisture sensitivity level requirements are met for surface mount assembly processes.

Latches Selection Notes

Select this component for applications requiring wide voltage operation from 2V to 6V. Consider the TSSOP-20 package for space-constrained designs. Verify compatibility with system logic levels, noting HC series inputs are compatible with standard CMOS outputs.

Latches Part Context

This part belongs to the MC74HC373A family of octal 3-state non-inverting transparent latches. It shares functional identity with the HC573A but differs in pinout arrangement to facilitate PCB layout. The device is designed as a high-performance silicon-gate CMOS solution replacing older LS373 equivalents.

Latches Replacement Considerations

MC74HCT373ADT serves as a variant with HCT logic levels suitable for TTL interfacing.