MC74HCT573ADWR2

Latches Overview

The MC74HCT573ADWR2G is an octal transparent latch from the HCT logic series, manufactured by onsemi. It features eight non-inverting D-type latches with three-state outputs in a 20-pin TSSOP package. The device operates within a supply voltage range of 4.5 V to 5.5 V. Key electrical parameters include a propagation delay of 30 ns at 5 V and a static current of 4 uA. Output drive capabilities specify a low-level output current of 6 mA and a high-level output current of -6 mA. The component supports surface-mount installation and functions across a temperature range of -55°C to +125°C.

Latches Feature Summary

• Transparent latch operation allows asynchronous data changes when the latch enable signal is active.
• Three-state outputs provide controlled bus interfacing and isolation capabilities.
• CMOS construction ensures low input current consumption and compatibility with standard logic families.

Latches Applications

• Parallel-to-serial data conversion circuits
• Register files for microprocessor systems
• Bus-oriented memory addressing

Latches Procurement Notes

Verify the complete part number includes the 'G' suffix for RoHS compliance, as distributors may list variants without it. Confirm the package type is TSSOP-20 and the reel quantity matches procurement requirements. Ensure the operating voltage aligns with the 4.5 V to 5.5 V specification. Check for moisture sensitivity labels if storage conditions are critical. Validate that the manufacturer is onsemi to avoid counterfeit components.

Latches Selection Notes

Select this component when 5 V logic interface is required with high-speed performance. The HCT series offers TTL-compatible input levels while maintaining CMOS output characteristics. Consider the TSSOP package for space-constrained designs requiring surface-mount technology. Verify that the three-state output capability meets system bus isolation needs. Compare propagation delays against timing constraints of the target application.

Latches Part Context

This component belongs to the MC74HCT573A family of octal latches. It serves as a digital storage element in CMOS logic circuits. The device is functionally similar to other octal latches but optimized for 5 V operation. It facilitates data retention and synchronization in digital systems. The wide operating temperature range supports industrial applications.

Latches Replacement Considerations

Compatible substitutes include MC74HC573ADWR2G for HC series operation and MM74HCT573WMX for alternative packaging. Verify pinout compatibility before substitution. Ensure voltage levels match the specific logic family requirements.