SN74HC573AQPWRG4Q1

Overview

The SN74HC573AQPWRG4Q1 is an automotive-grade octal transparent D-type latch with three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features a TSSOP-20 package. 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. The device supports a low-level output current of 32 mA and a high-level output current of -7.8 mA. Static current consumption is 8 uA. It functions across an extended temperature range from -40°C to +125°C and holds AEC-Q100 qualification.

Feature Summary

• Automotive-grade reliability certified under AEC-Q100 standards for durable performance in vehicle environments.
• Octal configuration provides eight independent transparent D-type latches with shared control inputs.
• Three-state outputs enable efficient bus-oriented architectures by allowing high-impedance states.

Applications

• Automotive data acquisition systems requiring robust signal latching
• In-vehicle communication bus interfaces utilizing three-state logic
• Industrial control modules operating in extended temperature ranges

Procurement Notes

Verify the complete part number including the Q1 suffix to confirm automotive qualification status. Ensure the TSSOP-20 package variant matches the target PCB footprint design. Confirm RoHS compliance requirements align with specific regional manufacturing regulations before finalizing procurement orders.

Selection Notes

Select this component when designing for automotive applications requiring wide voltage operation between 2 V and 6 V. The extended temperature capability up to 125°C makes it suitable for harsh environments. Consider the 32 mA low-level drive strength for direct interfacing with moderate loads without additional buffering.

Part Context

This device belongs to the SN74HC573A family of octal latches. The 'Q1' designation specifically indicates automotive qualification, while 'G4' denotes lead-free and RoHS-compliant packaging. It serves as a specialized version of standard commercial logic ICs tailored for rigorous automotive industry standards and long-term availability requirements.

Replacement Considerations

Direct substitutes include other AEC-Q100 qualified octal latches from the same manufacturer series. Verify pin compatibility and electrical specifications against SN74HC573APWRG4Q1 equivalents. Cross-reference alternative packages such as SOIC-20 if form factor adjustments are necessary during redesign.

FAQ

What is the maximum operating temperature for this component?

The device is rated for an extended temperature range with a maximum operating temperature of +125°C.

Does this part support three-state outputs?

Yes, the SN74HC573AQPWRG4Q1 features three-state outputs controlled by the OE input to facilitate bus-driven designs.