SN74HCT573DBR

Latches Overview

The SN74HCT573DBR is an octal transparent D-type latch manufactured by Texas Instruments, belonging to the 74HCT logic series. It features eight D-type latches with three-state outputs in a 20-SSOP package. The device operates within a supply voltage range of 4.5V to 5.5V. Key electrical parameters include a propagation delay of 25ns and a static current of 8uA. Output drive capabilities are specified at 6mA for both high and low states. The component supports surface mount installation and functions across a temperature range of -40°C to +85°C.

Latches Feature Summary

• Provides octal data storage via eight independent D-type latches with non-inverting functionality.
• Integrates three-state outputs to facilitate direct bus connections without external buffers.
• Ensures TTL-compatible input levels through HCT logic design for seamless interface with standard digital systems.

Latches Applications

• Register files in microprocessor-based architectures
• Parallel-to-serial data conversion circuits
• Memory address latching in embedded systems

Latches Procurement Notes

Verify the specific ordering suffix to confirm the package type and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements against project standards. Ensure the selected variant matches the required operating temperature range and supply voltage constraints for the target application environment.

Latches Selection Notes

Select this component when TTL-compatible inputs are required alongside CMOS performance characteristics. The HCT series ensures compatibility with older logic families while offering improved noise immunity. Consider the SSOP package dimensions and pin count relative to available PCB real estate and routing density constraints.

Latches Part Context

This part belongs to the widely adopted 74HCT family of logic integrated circuits. It serves as a standard solution for parallel data storage in digital designs requiring robust interfacing between different logic voltage domains. The device complements other members of the 74-series portfolio used in general-purpose computing and control applications.

Latches Replacement Considerations

CD74HCT573DBR is a verified equivalent from the same manufacturer family. MM74HCT573MTCX from onsemi is listed as a similar alternative. Verify pinout compatibility and electrical parameter alignment before substitution.