SN74AHCT573PWRE4

Overview

The SN74AHCT573PWRE4 is an octal transparent D-type latch manufactured by Texas Instruments. It features TTL-compatible inputs and operates within a supply voltage range of 4.5 V to 5.5 V. The device provides eight outputs with a propagation delay of 10.6 ns at 5 V. It utilizes a 20-TSSOP package and supports surface-mount installation. The component functions by allowing Q outputs to follow D inputs when the latch enable (LE) signal is high, while locking the output state when LE is low.

Feature Summary

• TTL-compatible input logic levels for direct interfacing with standard logic families
• Transparent operation mode where outputs track data inputs during active enable states
• High-speed performance suitable for demanding digital circuit applications

Applications

• Parallel-to-serial data conversion circuits
• Register file storage elements in microprocessor systems
• Bus interface buffering and isolation

Procurement Notes

Verify the specific RE4 suffix against current manufacturer documentation to confirm compliance with RoHS directives and environmental standards. Ensure the ordering part number matches the required TSSOP-20 package configuration. Cross-reference the datasheet revision history for any updates to electrical characteristics or recommended operating conditions prior to final procurement decisions.

Selection Notes

Select this component when TTL-compatible inputs are required alongside high-speed latching capabilities. The SN74AHCT573PWRE4 is appropriate for designs needing robust noise immunity and fast switching speeds within a 5 V logic environment. Consider the 20-TSSOP package constraints regarding board space and thermal management requirements for the specific application layout.

Part Context

This device belongs to the SN74AHCT series of advanced high-speed CMOS logic products from Texas Instruments. The AHCT series bridges the gap between older TTL logic standards and modern CMOS technology, offering improved speed and lower power consumption while maintaining compatible input thresholds. This specific model represents an octal latch variant designed for general-purpose digital logic applications.

Replacement Considerations

SN74AHCT573PWR is a direct equivalent variant within the same product family.