MC74HC573ADTR2

Latches Overview

The MC74HC573ADTR2G is an octal 3-state noninverting transparent latch in a TSSOP-20 package. It operates within a voltage range of 2.0 to 6.0 V. Propagation delays from data input to output range from 26 ns at 6.0 V to 150 ns at 2.0 V. The device features low input current and high noise immunity, with outputs directly interfacing to CMOS, NMOS, and TTL loads.

Latches Feature Summary

• Transparent latch functionality where outputs change asynchronously when Latch Enable is high
• Data latching occurs when Latch Enable transitions low, capturing data meeting setup and hold requirements
• Three-state outputs allow direct interface to CMOS, NMOS, and TTL logic families
• Pinout identical to LS573 for compatibility

Latches Applications

• Interfacing TTL or NMOS outputs to High-Speed CMOS inputs
• Registering data in digital systems
• Memory address decoding circuits

Latches Procurement Notes

Verify the complete part number includes the trailing 'G' suffix (MC74HC573ADTR2G) as indicated in official ordering information. Confirm the package type matches the required TSSOP-20 form factor. Ensure compliance with RoHS and Pb-free material declarations if applicable to your manufacturing process. Check specific automotive qualification requirements if using the -Q suffix variant.

Latches Selection Notes

Select this component when an octal latch with three-state capability is required. The HC series offers a wide operating voltage range suitable for various logic levels. Consider the HCT variant if direct TTL input compatibility without pull-up resistors is necessary. Verify that the propagation delay specifications meet the timing constraints of your target application frequency.

Latches Part Context

This device belongs to the MC74HC573A family of octal transparent latches. It shares functional equivalence with the HC373A but differs in pinout arrangement to facilitate printed circuit board layout. The component is manufactured by onsemi and is available in multiple package options including SOIC and TSSOP configurations.

Latches Replacement Considerations

The MC74HC573ADWR2G serves as a replacement option utilizing the SOIC-20 Wide package instead of TSSOP-20. Both devices share identical electrical characteristics and pinouts. Ensure mechanical clearance accommodates the selected package style before substitution.