SN74HC373PW

Overview

The SN74HC373PW is an octal transparent D-type latch with three-state outputs manufactured by Texas Instruments. It features eight high-current latches in a single package, designed to drive highly capacitive or low-impedance loads up to 15 LSTTL loads. The device operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -40°C to +85°C. Propagation delay times vary based on voltage: 15 ns to 31 ns at 4.5 V and 12 ns to 26 ns at 6 V (CL=50 pF). Static current is typically 8 µA at 6 V.

Feature Summary

• High-current three-state true outputs capable of driving heavy loads without interface components
• Transparent latch operation where outputs follow data inputs while latch-enable is high
• Output-enable input places outputs in normal logic states or high-impedance state

Applications

• Implementing buffer registers
• I/O port implementations
• Bidirectional bus drivers
• Working registers

Procurement Notes

Verify the specific ordering suffix 'PW' corresponds to the TSSOP-20 tape and reel packaging configuration. Confirm RoHS compliance status and lead finish details against the latest Package Option Addendum. Ensure the procurement matches the active production status indicated for this specific part number variant.

Selection Notes

Select this component when high-drive capability is required for low-impedance loads or bus structures. The HC series offers CMOS compatibility with standard TTL loads. Consider the PW package dimensions for PCB layout constraints. Verify that the 2 V to 6 V supply range aligns with system power requirements.

Part Context

This device belongs to the SN74HC373A family of octal transparent D-type latches. It shares functional characteristics with other variants like SN74HC373APWR but differs in packaging. The PW suffix specifically denotes the TSSOP surface-mount package type used for compact circuit board designs.

Replacement Considerations

SN74HC373APWR is a direct replacement offering identical functionality in a different tape and reel packaging format.