74AVC4T774QWBQBRQ1

Overview

The SN74AVC4T774QWBQBRQ1 is an automotive-grade, 4-bit dual-supply non-inverting bus transceiver with configurable voltage-level shifting and 3-state outputs. It supports independent direction control inputs for asynchronous communication between two data buses. The device features a fully configurable dual-rail design allowing each port to operate over the full 1.08V to 3.6V power-supply range. I/Os are 4.6V tolerant, and maximum data rates reach 500Mbps during translation between 1.08V and 3.6V.

Feature Summary

• Qualified for automotive applications with AEC-Q100 certification
• Fully configurable dual-rail design supporting 1.08V to 3.6V operation
• Ioff circuitry enables partial power-down mode to prevent backflow current
• High-speed translation capability up to 500Mbps

Applications

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

Procurement Notes

Verify the specific package suffix matches the required footprint, as the QWBQBR designation indicates a WQFN-16 variant. Confirm that the ordering code includes the -Q1 suffix for automotive qualification. Ensure the procurement source provides valid traceability documentation for AEC-Q100 compliance. Check for any recent product change notifications regarding pinout or electrical characteristics before finalizing orders.

Selection Notes

Select this component when designing interfaces between different low-voltage logic nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V in automotive environments. It is suitable for applications requiring bidirectional level translation with independent channel direction control. Consider the WQFN-16 package for space-constrained PCB layouts. Ensure the system design accounts for the 4.6V tolerance on I/O pins if interfacing with higher voltage signals.

Part Context

This part belongs to the SN74AVC4T774-Q1 family of automotive bus transceivers manufactured by Texas Instruments. It is designed specifically for high-speed, low-voltage applications in vehicles. The device integrates four independent channels, each with its own direction control input, providing flexible data routing capabilities between disparate voltage domains within a single integrated circuit.

Replacement Considerations

Direct replacements include other SN74AVC4T774-Q1 variants with different package options such as PW (TSSOP) or DYY (SOT). Verify that substitute parts maintain the same WQFN-16 footprint and thermal pad requirements. Ensure any alternative maintains AEC-Q100 qualification and identical electrical specifications for voltage ranges and data rates.