SN74AHCT573DWR

Overview

The SN74AHCT573DWR is an octal transparent D-type latch manufactured by Texas Instruments. It features eight D-type latches with three-state outputs, housed in a 20-pin SOIC package. The device operates within a supply voltage range of 2 V to 5.5 V and supports TTL-compatible inputs. Propagation delays are specified at 14.5 ns and 8.8 ns, with low-level output current of 32 mA and high-level output current of -8 mA. Static current is 4 uA, and the operating temperature range spans from -40°C to +125°C.

Feature Summary

• Octal transparent D-type latch configuration with three-state outputs
• TTL-compatible input levels for broad interface compatibility
• Wide supply voltage operation supporting 2 V to 5.5 V ranges

Applications

• Data storage in digital systems
• Bus-oriented architectures requiring tri-state control
• Clock domain crossing synchronization

Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure that any alternative part numbers share identical electrical characteristics and pinout configurations before substitution. Cross-reference RoHS compliance status directly with the manufacturer's latest product data sheet to meet regulatory requirements.

Selection Notes

Select this component when designing circuits requiring octal latching with wide voltage tolerance. The AHCT series ensures compatibility with standard TTL logic levels while offering AC performance characteristics. Consider the SOIC-20 package dimensions and thermal dissipation capabilities relative to the target PCB layout constraints and ambient operating conditions.

Part Context

This part belongs to the SN74AHCT573 family of octal transparent D-type latches. It shares functional similarities with other variants like the SN74AC573 but differs in input threshold characteristics due to the HCT designation. The DWR suffix indicates a specific reel-based packaging format suitable for automated surface-mount assembly processes.

Replacement Considerations

Public confirmed substitute part numbers include SN74AHCT573DW.