SN74HC573AQPWRQ1

Overview

The SN74HC573AQPWRQ1 is an octal transparent D-type latch from the Texas Instruments SN74HC573A-Q1 series, designed for automotive applications. It operates within a supply voltage range of 2 V to 6 V and features three-state outputs. The device provides eight D-type latches with separate input and output lines. Key electrical parameters include a propagation delay of 200 ns at 2 V, 40 ns at 4.5 V, and 34 ns at 6 V. Static current is specified at 8 uA, with low-level output current of 32 mA and high-level output current of -7.8 mA. It functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• Automotive-grade qualification compliant with AEC-Q100 standards
• Octal configuration providing eight independent transparent D-type latches
• Three-state output capability for bus-oriented systems
• Wide operating voltage range supporting 2 V to 6 V supply

Applications

• Automotive electronic control units requiring robust logic latching
• Bus-oriented memory mapping in vehicle networks
• Portable equipment utilizing low static power consumption
• Industrial control systems operating in extended temperature environments

Procurement Notes

Verify the complete ordering part number against official Texas Instruments documentation to ensure correct package type and automotive grade designation. Confirm that the specific suffix matches the required RoHS compliance and packaging format. Cross-reference the manufacturer's latest datasheet revision to validate all electrical characteristics and mechanical dimensions before finalizing procurement specifications.

Selection Notes

Select this component when automotive reliability under AEC-Q100 is mandatory alongside HC logic speed. Compare propagation delays and output drive capabilities against standard industrial grades if cost sensitivity exists. Ensure the 2 V to 6 V operating range aligns with the system's power supply architecture. Verify thermal performance requirements against the -40°C to +125°C junction temperature limits for harsh environment deployment.

Part Context

This device belongs to the SN74HC573A-Q1 family of octal transparent D-type latches specifically engineered for automotive electronics. The series integrates high-speed CMOS technology with tri-state outputs, offering compatibility with standard CMOS logic levels while maintaining low power dissipation. The automotive qualification ensures durability under vibration and extreme temperature conditions typical in vehicular environments.

Replacement Considerations

SN74HC573AQDWRQ1 offers identical logical functionality in a 20-SOIC package instead of TSSOP-20.