TXU0104BQAR

Overview

The TXU0104BQAR is a 4-bit fixed-direction voltage-level translator in a 14-pin VQFN package. It supports dual supply voltages from 1.1V to 5.5V on both ports. The device features Schmitt-trigger inputs and 3-state outputs, with data rates up to 200Mbps at 3.3V to 5.0V. Operating temperature ranges from -40°C to +125°C.

Feature Summary

• Dual-rail design allows independent port operation across wide voltage ranges
• Schmitt-trigger inputs filter slow or noisy signals effectively
• Integrated pull-down resistors prevent channel floating when undefined
• Ioff-float feature disables outputs during partial power-down states

Applications

• Eliminating slow or noisy input signals
• Driving indicator LEDs or buzzers
• Debouncing mechanical switches
• General purpose I/O level shifting
• Push-pull level shifting for UART, SPI, and JTAG interfaces

Procurement Notes

Verify the specific BQA suffix indicates the VQFN-14 package configuration. Confirm active OE logic requirements against system design needs. Ensure thermal pad grounding aligns with layout guidelines for optimal heat dissipation.

Selection Notes

Select this component for applications requiring fixed-direction translation between disparate voltage domains. Verify that the required data rate does not exceed limits defined by specific supply voltage combinations. Consider pinout compatibility with existing TXB family designs if migration is planned.

Part Context

This part belongs to the TXU0104 family of noninverting translators. It differs from the TXUN0104 variant primarily in Output Enable signal polarity. The BQA suffix specifically denotes the small form-factor VQFN packaging suitable for space-constrained PCB layouts.

Replacement Considerations

TXB0104 variants offer bidirectional capability but differ in architecture. TXS0104 provides bidirectional translation with different speed characteristics. Verify functional equivalence regarding directionality and control logic before substitution.