74AVC4T774QPWRQ1

Overview

The SN74AVC4T774QPWRQ1 is an automotive-grade, 4-bit dual-supply bus transceiver with configurable voltage-level shifting and independent direction control inputs. It supports asynchronous communication between two data buses using separate VCCA and VCCB rails, both ranging from 1.08V to 3.6V. The device achieves maximum data rates of 500Mbps during translation between 1.08V and 3.6V. It features 4.6V tolerant I/Os, partial power-down mode via Ioff, and AEC-Q100 qualification for temperatures up to 125°C.

Feature Summary

• AEC-Q100 qualified for automotive applications with a temperature range of -40°C to 125°C
• Fully configurable dual-rail design allowing universal low-voltage bidirectional translation
• Supports high-speed translation with data rates up to 500Mbps
• Ioff circuitry enables partial power-down mode to prevent damaging backflow current

Applications

• Telematics systems
• Instrument clusters
• Head units
• Navigation systems

Procurement Notes

Verify the specific ordering suffix matches the required package type, as the base model number covers multiple physical packages including TSSOP-16 (PW), WQFN-16 (BQB), and SOT-16 (DYY). Confirm that the Q1 suffix indicates automotive qualification and function safety capability. Ensure the datasheet revision aligns with the manufacturing date code for any updated thermal or electrical specifications.

Selection Notes

Select this component when designing systems requiring isolated, bidirectional level translation between disparate voltage domains within the 1.08V to 3.6V range. The independent DIR inputs allow per-channel direction control, which is essential for complex multi-master bus architectures. Consider the 4.6V tolerance on I/O pins if interfacing with higher voltage legacy interfaces without additional protection components.

Part Context

This part belongs to the SN74AVC4T774-Q1 family of automotive bus transceivers. It is distinct from non-automotive variants by its extended temperature rating and reliability standards. The device utilizes a non-inverting logic structure where control inputs are referenced to VCCA, while data ports track their respective supply rails, enabling flexible integration in mixed-voltage automotive electronic control units.

Replacement Considerations

SN74AVC4T774PWR: Non-automotive commercial grade equivalent with identical electrical characteristics but lacking AEC-Q100 certification.