MM74HCT573WMX

Latches Overview

The MM74HCT573WMX is an octal D-type transparent latch manufactured by Fairchild Semiconductor, operating within the HCT logic series. It features eight independent D-type latches with three-state outputs in a 20-pin SOIC package. The device operates on a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 17 ns and a maximum static current of 1.5 mA. Output drive capability is specified at 7.2 mA for both high and low states. The component supports surface mount installation and functions reliably across an industrial temperature range from -40°C to +85°C.

Latches Feature Summary

• Octal configuration providing eight independent D-type transparent latches for parallel data storage.
• Three-state output architecture enabling direct connection to system buses without external buffers.
• HCT logic compatibility ensuring TTL-compatible input levels while maintaining CMOS performance characteristics.

Latches Applications

• Parallel data buffering in digital communication systems
• Register stages in microprocessor-based control circuits
• Data acquisition interfaces requiring isolated storage

Latches Procurement Notes

Verify manufacturer origin as Fairchild Semiconductor or authorized successor entities like onsemi due to corporate acquisitions. Confirm RoHS compliance status through official documentation. Ensure moisture sensitivity handling protocols are followed during assembly. Validate pinout alignment with standard SOIC-20 specifications before integration into PCB designs.

Latches Selection Notes

Select this component when designing systems requiring multiple synchronized data storage elements with bus-compatible outputs. The HCT series ensures compatibility with standard TTL logic families. Consider thermal management requirements given the operational temperature limits. Evaluate board space constraints against the physical dimensions of the SOIC-20 package.

Latches Part Context

This part belongs to the widely adopted 74HCT logic family, known for bridging CMOS power efficiency with TTL noise immunity. The MM74HCT573 variant specifically addresses applications needing parallel data retention. Its design supports high-density digital circuitry where signal integrity and timing synchronization are critical for reliable operation.

Latches Replacement Considerations

SN74HCT573PW serves as a verified alternative from Texas Instruments offering identical logical functionality and pinout compatibility.