MM74HCT573MTC

Latches Overview

The MM74HCT573MTC is an octal D-type transparent latch manufactured by Fairchild Semiconductor, belonging to the HCT logic series. It features eight non-inverting outputs with three-state capability and operates within a supply voltage range of 4.5 V to 5.5 V. The device utilizes a 20-pin TSSOP surface-mount package and provides a propagation delay of 17 ns at 5 V. It supports a maximum high-level output current of 7.2 mA and functions reliably across an operating temperature range from -40°C to +85°C.

Latches Feature Summary

• Octal D-type transparent latch architecture with three-state output control
• CMOS construction ensuring low static power consumption compatible with TTL inputs
• Non-inverting polarity providing direct data path from input to output

Latches Applications

• Parallel-to-serial data conversion circuits
• Bus-oriented memory register storage
• Temporary data holding in digital processing systems

Latches Procurement Notes

Verify the manufacturer designation on the component marking, as this part number is associated with Fairchild Semiconductor but may also be produced under onsemi branding following corporate restructuring. Confirm the specific suffix indicates the tube packaging format rather than tape-and-reel variants. Ensure compliance with RoHS directives and check for any recent product change notices regarding pinout or electrical specifications before final integration.

Latches Selection Notes

Select this component when an octal latch with three-state bus driving capability is required for 5 V logic systems. The HCT series ensures compatibility with standard TTL input levels while maintaining CMOS noise immunity. The TSSOP package offers a compact footprint suitable for space-constrained printed circuit board designs compared to larger DIP alternatives.

Latches Part Context

This component is part of the widely adopted 74HCT logic family, designed to bridge the performance gap between older TTL standards and modern CMOS technologies. The MM74HCT573 variant specifically serves as the octal counterpart to single-bit latches, enabling efficient management of multi-bit data paths in microprocessor interfaces and peripheral control applications.

Latches Replacement Considerations

The MC74HCT573ADTR2G is a verified substitute offering identical logical functionality in a TSSOP-20 package. Alternative packages such as the SOIC-20 variant (MM74HCT573WMX) provide equivalent electrical characteristics with different physical mounting requirements.