74AVC4T245QWBQBRQ1

Overview

The SN74AVC4T245-Q1 is an automotive-grade, 4-bit dual-supply bus transceiver with configurable voltage translation and 3-state outputs. It supports VCCA and VCCB supply voltages ranging from 1.2V to 3.6V, enabling bidirectional translation between any low-voltage nodes including 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device achieves maximum data rates of up to 380Mbps during 1.8V to 3.3V translation. It features I/Os that are 4.6V tolerant and includes Ioff circuitry for partial power-down mode operation.

Feature Summary

• Fully configurable dual-rail design allows each port to operate over the full 1.2V to 3.6V power-supply range.
• I/Os are 4.6V tolerant, supporting high-voltage interfaces while translating lower logic levels.
• Ioff circuitry disables outputs to prevent damaging current backflow when the device is powered down.
• Function safety capable with latch-up performance exceeding 100mA per JESD 78, Class II.

Applications

• Telematics
• Cluster
• Head unit
• Navigation systems

Procurement Notes

Verify the specific package suffix (e.g., WBQB) against the manufacturer's official orderable part list to ensure correct physical dimensions and pinout compatibility. Confirm AEC-Q100 qualification status and temperature grade requirements match the target automotive application environment before finalizing procurement specifications.

Selection Notes

Select this component for asynchronous communication between two data buses requiring universal low-voltage bidirectional translation. Ensure the system design accommodates the separate configurable power-supply rails for both the A and B ports. Verify that control inputs are referenced correctly to VCCA to maintain proper direction-control and output-enable functionality across the operating temperature range.

Part Context

This device belongs to the SN74AVC4T245-Q1 family of automotive 4-bit dual-supply bus transceivers. It is designed specifically for non-inverting bidirectional data transmission in automotive environments. The product line emphasizes configurable voltage-level shifting capabilities to interface various low-voltage logic standards within complex vehicle electronic architectures.

Replacement Considerations

Direct substitutes include other SN74AVC4T245-Q1 variants with different package suffixes such as RGY or PW. Cross-family replacements require verifying identical channel counts, voltage ranges, and automotive qualification standards.