TXU0104QWBQARQ1

Overview

The TXU0104QWBQARQ1 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 1.1 V to 5.5 V on both ports. The device achieves data rates up to 200 Mbps when translating between 3.3 V and 5.0 V supplies. It features high drive strength of up to 12 mA at 5 V and low power consumption, with maximum supply currents of 6 µA across the full operating temperature range of -40°C to +125°C.

Feature Summary

• Fully configurable dual-rail design allows independent port voltages ranging from 1.1 V to 5.5 V
• Schmitt-trigger inputs provide noise immunity for slow or noisy signal transitions
• Integrated VCC isolation and Ioff-float feature disables outputs during partial-power-down modes
• High drive capability supports direct connection to loads such as LEDs or buzzers

Applications

• Eliminating slow or noisy input signals in digital interfaces
• Driving indicator LEDs or buzzers directly from logic ports
• Debouncing mechanical switches before processing by microcontrollers
• General-purpose I/O level shifting between disparate voltage domains
• Push-pull level shifting for UART, SPI, and JTAG communication protocols

Procurement Notes

Verify that the specific WBQA package variant matches the required footprint and thermal pad configuration for the target PCB layout. Confirm AEC-Q100 qualification status is required for the specific automotive application environment. Ensure supply voltage rails on both ports remain within the 1.1 V to 5.5 V operational limits to maintain specified performance and reliability standards.

Selection Notes

Select this component when a fixed unidirectional translation path is sufficient, unlike bidirectional alternatives. The inclusion of Schmitt triggers makes it suitable for environments with significant signal noise or slow rise times. Verify that the required data rate does not exceed the limits defined by the specific voltage differential between the A and B ports.

Part Context

This device belongs to the Texas Instruments TXU0x04-Q1 family of automotive voltage translators. It shares pinout compatibility with the TXB0104-Q1 but offers higher drive strength and dedicated unidirectional functionality. The WBQA suffix indicates the wettable flank QFN package, which facilitates automated optical inspection of solder joints for enhanced manufacturing quality control.

Replacement Considerations

TXB0104QWBQARQ1

FAQ

How does the OE pin function regarding reference voltage?

The Output Enable (OE) pin can be referenced to either VCCA or VCCB logic levels. Pulling it low disables all outputs to a high-impedance state, while pulling it high enables data transmission.

What is the purpose of the VCC isolation feature?

If either VCCA or VCCB input drops below 100 mV or is disconnected, the VCC isolation feature automatically disables all outputs, preventing unintended current flow during partial-power-down scenarios.