SN74AC573QDGSRQ1

Overview

The SN74AC573QDGSRQ1 is an automotive-grade octal transparent D-type latch from Texas Instruments, designed for robust performance in vehicle electronics. It operates within a supply voltage range of 2V to 5.5V and supports low-level output currents of 8mA and high-level output currents of -8mA. The device functions reliably across an extended temperature range from -40°C to +125°C. Packaged in a VSSOP-20 surface-mount format, it integrates eight independent latches with data inputs and corresponding outputs controlled by a single latch enable signal.

Feature Summary

• Automotive qualification compliant with AEC-Q100 standards for long-term reliability in vehicular environments.
• Transparent latch operation allows Q outputs to follow D inputs when the latch enable signal is active.
• Wide operating voltage capability supports integration into diverse power supply architectures ranging from 2V to 5.5V.

Applications

• Data storage modules in automotive infotainment systems
• Interface buffering for instrument cluster displays
• Memory address latching in vehicle control units

Procurement Notes

Verify the specific suffix 'DGSR' corresponds to the VSSOP-20 package and reel quantity requirements. Confirm that the Q1 designation meets the specific AEC-Q100 grade required for your target automotive zone. Ensure ESD handling protocols are followed during assembly due to the sensitive CMOS input structure inherent to the AC logic family.

Selection Notes

Select this component when an octal latch with wide voltage tolerance is required for automotive applications. It differs from standard commercial parts through its enhanced thermal stability and qualification. Consider the VSSOP-20 footprint constraints and ensure the PCB layout accommodates the thermal dissipation needs for continuous operation at elevated temperatures up to 125°C.

Part Context

This part belongs to the SN74AC573-Q1 series, which extends the standard AC logic family for automotive use. It provides eight bits of storage with a transparent mode, distinct from tri-state variants like the SN74ACT573. The Q1 suffix indicates compliance with automotive reliability standards, differentiating it from non-qualified industrial counterparts while maintaining pin compatibility with standard 74AC573 devices.

Replacement Considerations

SN74AHC573QDGSRQ1 offers similar functionality with lower voltage operation capabilities. SN74AC573DWR serves as a commercial-grade alternative without automotive qualification. Verify package dimensions and electrical characteristics before substituting to ensure system compatibility.