TXU0304QWBQARQ1

Overview

The TXU0304QWBQARQ1 is an automotive-grade, 4-bit fixed-direction voltage-level translator with Schmitt-trigger inputs and 3-state outputs. It supports dual-rail operation from 1.1V to 5.5V on both ports. The device provides up to 200Mbps data rates for 3.3V to 5.0V translations and features high drive strength of up to 12mA at 5V. It includes VCC isolation and Ioff-float capabilities for partial-power-down modes. Packaged in a wettable flank QFN (WBQA) format, it operates reliably between -40°C and +125°C.

Feature Summary

• Schmitt-trigger inputs effectively filter slow or noisy signals to ensure clean logic transitions.
• Integrated static pull-down resistors prevent input channels from floating when undefined.
• VCC isolation and disconnect features automatically disable outputs if supply voltage drops below 100mV.
• OE control logic allows enable/disable referencing from either the A or B port supply rail.

Applications

• Eliminating slow or noisy input signals in digital circuits
• Driving indicator LEDs or buzzers requiring high drive strength
• Debouncing mechanical switches
• General purpose I/O level shifting between different voltage domains
• Push-pull level shifting for UART, SPI, and JTAG interfaces

Procurement Notes

Verify that the specific WBQA package variant matches the required footprint and thermal pad grounding strategy. Confirm that the AEC-Q100 qualification aligns with the target automotive application standards. Ensure the fixed-direction configuration suits the design, as this part does not support bidirectional translation like the TXB family.

Selection Notes

Select this component when a fixed-direction translation path is required alongside high drive capability. It serves as a drop-in replacement for pinout-compatible devices but offers superior output current compared to standard translators. Consider the Schmitt-trigger inputs if the signal environment contains significant noise or slow rise times.

Part Context

This device belongs to the Texas Instruments TXU0x04-Q1 family of automotive voltage-level translators. It shares the same pinout as the TXB0104-Q1 but is optimized for fixed-direction applications where higher drive strength is necessary. It complements other variants like the TXU0104-Q1 and TXU0204-Q1 which offer different channel direction configurations.

Replacement Considerations

Pinout compatible with TXB0104-Q1; however, verify drive strength requirements as TXB0104-Q1 is not recommended for high-drive applications.

FAQ

Can the TXU0304QWBQARQ1 operate with one port powered off?

Yes, the Ioff feature supports partial-power-down mode, allowing safe operation when one port is unpowered while the other remains active.

What is the maximum data rate supported by this translator?

The device supports up to 200Mbps when translating between 3.3V and 5.0V supplies.