SN74AHCT573PWRG4

Overview

The SN74AHCT573PWRG4 is an octal transparent D-type latch manufactured by Texas Instruments. It belongs to the AHC (Advanced High-Speed CMOS) logic family and features HCT-compatible inputs, allowing direct interfacing with TTL-driven systems. The device provides eight non-inverting outputs that follow the data inputs when the latch enable signal is active. It operates within a supply voltage range of 2 V to 5.5 V and supports surface-mount installation in a TSSOP-20 package. The component is designed for high-speed digital applications requiring reliable data storage and bus isolation.

Feature Summary

• HCT-compatible input structure enables seamless integration with legacy TTL logic families
• Octal configuration provides eight independent transparent D-type latches in a single package
• Advanced High-Speed CMOS technology ensures low power consumption and high switching speeds

Applications

• Data storage registers in microprocessor-based systems
• Bus isolation circuits for bidirectional data transfer
• Parallel-to-serial conversion interfaces

Procurement Notes

Verify the complete part number including the G4 suffix to confirm RoHS compliance and lead-free manufacturing status. Confirm the TSSOP-20 package variant matches your PCB footprint requirements. Ensure the operating voltage range aligns with your system's power supply specifications before procurement.

Selection Notes

Select this component when HCT-level compatibility is required alongside AHC performance characteristics. The wide supply voltage range supports both 3.3 V and 5 V logic systems. Consider the TSSOP-20 package size relative to available board space and thermal management needs for dense designs.

Part Context

This part is part of the SN74AHCT573 series of octal latches. It differs from standard HC or HCT variants by offering improved speed and lower power dissipation while maintaining backward compatibility with TTL input levels. The G4 suffix indicates environmental compliance features consistent with Texas Instruments' product line standards.

Replacement Considerations

SN74AHCT573PW is the tube-packaged equivalent of the same electrical device. SN74AHCT573DR is the SOIC-20 packaged alternative from Texas Instruments. Verify pinout compatibility and package dimensions when substituting.