SN74AHCT373DWR

Overview

The SN74AHCT373DWR is an octal transparent D-type latch with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5V to 5.5V and features TTL-compatible inputs. The device provides balanced CMOS outputs capable of sourcing and sinking up to 8mA. Typical propagation delay is 9.5ns at 5V VCC with a 15pF load. It is housed in a 20-pin SOIC (DW) package.

Feature Summary

• TTL-compatible CMOS inputs for direct interfacing with standard logic families
• Balanced 3-state outputs allowing high-impedance control without affecting stored data
• Shared latch enable and output enable controls across all eight channels

Applications

• Parallel data storage
• Digital bus buffer

Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the SOIC-20 package and reel packaging configuration required for your assembly process. Confirm that the component meets the necessary RoHS compliance standards for your region. Ensure the datasheet revision matches the design specifications, as electrical characteristics may vary between revisions.

Selection Notes

Select this component when a 5V logic interface with TTL input thresholds is required alongside tri-state bus capabilities. The AHCT series offers lower power consumption compared to older bipolar technologies while maintaining compatible switching speeds. Consider the 20-pin SOIC footprint constraints during PCB layout planning.

Part Context

This part belongs to the SNx4AHCT373 family of octal transparent D-type latches. It shares functional similarities with other variants like the SN74HCT373 but utilizes advanced CMOS technology for improved performance metrics such as reduced propagation delay and lower static power dissipation under identical operating conditions.

Replacement Considerations

Direct pin-to-pin replacements include other manufacturers' equivalents of the SN74AHCT373. Verify voltage tolerance and package dimensions before substitution. Note that the SN74AS373 is a different technology family with distinct electrical characteristics and should not be assumed interchangeable without detailed analysis.