74ABT373CMSA

Overview

The Fairchild Semiconductor 74ABT373CMSA is an octal transparent latch featuring tri-state outputs, designed for bus-oriented system applications. It operates within a supply voltage range of 4.5 V to 5.5 V and utilizes the ABT logic series. The device provides an output sink capability of 64 mA and a source capability of 32 mA. It exhibits a propagation delay of 2.7 ns and functions reliably across an operating temperature range from -40°C to +85°C. The component is housed in a 20-lead shrink small outline package (SSOP) with a width of 5.3 mm.

Feature Summary

• Features tri-state outputs suitable for bus interfacing applications
• Provides high output drive capability with 64 mA sink and 32 mA source currents
• Ensures glitch-free high impedance bus loading during power up and down cycles

Applications

• Bus-oriented system data storage
• High-speed digital signal latching
• Interface circuits requiring tri-state control

Procurement Notes

Verify current availability status as distribution channels may list obsolete or discontinued inventory. Confirm exact package dimensions and pinout compatibility with existing PCB footprints. Ensure RoHS compliance documentation matches specific manufacturing dates. Validate that the SSOP-20 variant aligns with thermal management requirements for the intended operational environment.

Selection Notes

Select this component when high-speed latching with tri-state bus control is required. The ABT series offers superior speed compared to standard TTL equivalents while maintaining compatible input levels. Consider the 64 mA sink capability for driving heavy loads directly. Verify that the 4.5 V to 5.5 V supply range matches the system power architecture before integration.

Part Context

This part belongs to the 74ABT family of high-speed CMOS logic devices. It serves as an octal transparent latch, distinct from flip-flops by its level-sensitive operation rather than edge-triggered behavior. The CMSA suffix denotes the specific SSOP-20 package configuration manufactured by Fairchild Semiconductor, now part of onsemi.

Replacement Considerations

• SN74ABT373DW
• SN74ABT373DWR
• SN74ABT373NSR