SN74AHCT573PW

Overview

The SN74AHCT573PW is an octal transparent D-type latch manufactured by Texas Instruments. It features TTL-compatible inputs and operates within a voltage range of 4.5 V to 5.5 V. The device provides eight D-type latches with three-state outputs, housed in a TSSOP-20 package. When the latch enable input is high, Q outputs follow data inputs; when low, outputs are latched at the logic levels present on the D inputs.

Feature Summary

• TTL-compatible input structure for direct interfacing with standard logic families
• Three-state output capability allowing connection to bus systems
• Transparent operation mode where outputs track inputs during enable phase

Applications

• Parallel-to-serial conversion circuits
• Bus-oriented memory register applications
• Clocked interface buffers between microprocessors and peripheral devices

Procurement Notes

Verify the specific suffix 'PW' corresponds to the TSSOP-20 package variant. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure supply chain sources are authorized to guarantee component authenticity and traceability.

Selection Notes

Select this component when TTL-level compatibility is required alongside low-power CMOS performance. The AHCT series bridges the gap between older TTL standards and modern CMOS technologies. Verify that the operating voltage range aligns with the system's 5 V power supply specifications.

Part Context

This part belongs to the SN74AHCT family of advanced high-speed CMOS logic devices. It is designed for use in 5 V systems requiring compatibility with TTL logic levels. The octal configuration allows for efficient handling of parallel data streams in digital control applications.

FAQ

What is the function of the latch enable input?

When the latch enable input is high, the outputs follow the data inputs. When low, the outputs are latched at the logic levels established on the D inputs.

Does this device support three-state outputs?

Yes, the SN74AHCT573PW includes three-state outputs, allowing it to be connected directly to bus lines.