SN74HCT573DWRE4

Latches Overview

The SN74HCT573DWRE4 is an octal transparent D-type latch manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 5.5 V and features non-inverting outputs with tri-state capability. The device utilizes HCT logic technology, ensuring TTL-compatible inputs while maintaining low static power consumption of 4 uA. Propagation delays are specified at 14.5 ns and 8.8 ns under varying conditions. It supports a low-level output current of 32 mA and a high-level output current of -8 mA. The component is housed in a 20-SOIC package and functions reliably across an operating temperature range from -40°C to +125°C.

Latches Feature Summary

• Octal transparent D-type latch architecture with eight independent data paths
• Tri-state output capability for effective bus line driving applications
• HCT logic compatibility providing direct interface with TTL systems
• Extended thermal stability supporting operation up to 125°C

Latches Applications

• High-speed data buffering in digital communication systems
• Registering data on microprocessor buses
• Parallel-to-serial conversion circuits
• Memory address latching in embedded controllers

Latches Procurement Notes

Verify the specific suffix 'E4' indicates RoHS compliance and lead-free construction as per manufacturer standards. Confirm the SOIC-20 package dimensions match your PCB footprint requirements. Ensure the operating environment stays within the specified -40°C to +125°C range to maintain signal integrity. Check for any recent product change notices that might affect pinout or electrical characteristics before finalizing the design.

Latches Selection Notes

Select this component when TTL-compatible input levels are required alongside CMOS performance benefits. The wide supply voltage range allows flexibility in mixed-voltage systems. Compare propagation delay specifications against system timing constraints to ensure adequate setup and hold times. Consider the tri-state feature if multiple devices share a common data bus structure.

Latches Part Context

This part belongs to the SN74HCT573 family of octal latches. It serves as a standard solution for parallel data storage in industrial and consumer electronics. The HCT series bridges the gap between older TTL designs and modern CMOS technologies. It is widely used in legacy system upgrades where pin compatibility is critical.

Latches Replacement Considerations

SN74AHC573DWRE4 offers faster switching speeds and lower voltage operation but requires verification of input voltage thresholds. SN74HC573 variants provide similar functionality with HC logic levels instead of HCT. Always confirm package compatibility and electrical parameter overlaps before substituting.