TXU0204BQAR

Overview

The TXU0204BQAR is a four-bit, dual-supply noninverting fixed-direction voltage-level translator featuring Schmitt-trigger inputs and three-state outputs. It supports data rates up to 200 Mbps when operating between 3.3 V and 5.0 V. The device accommodates supply voltages from 1.1 V to 5.5 V on both ports. It includes integrated static pull-down resistors to prevent floating channels and offers high drive strength of up to 12 mA at 5 V. The component operates within a temperature range of -40°C to +125°C.

Feature Summary

• Schmitt-trigger inputs effectively filter slow or noisy signals for reliable translation
• Integrated static pull-down resistors ensure channels do not float during undefined states
• VCC isolation and disconnect features enable partial-power-down mode operation
• High drive capability supports direct driving of indicators, buzzers, and mechanical switches

Applications

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

Procurement Notes

Verify the specific package suffix 'BQA' corresponds to the 14-pin VQFN form factor required for your layout. Confirm that the fixed-direction pinout matches your design constraints, as this differs from bidirectional variants. Ensure power supply decoupling meets the recommended operating conditions for the target voltage rails.

Selection Notes

Select this component when a fixed direction is acceptable and higher drive current is needed compared to standard translators. The inclusion of Schmitt triggers makes it suitable for noisy environments. Verify that the OE control logic referencing either VCCA or VCCB aligns with your system's enable strategy.

Part Context

This part belongs to the TXU0x04 family of unidirectional voltage-level translators. It shares pinout compatibility with the TXB0104 family, allowing for potential drop-in replacements where fixed direction is sufficient. Other variants like the TXU0104 and TXU0304 offer different channel direction configurations within the same series.

Replacement Considerations

TXB0104 (Pin-compatible but lacks high drive strength)

FAQ

Can the TXU0204BQAR operate with mixed voltage supplies?

Yes, both the A port and B port can independently accept input voltages ranging from 1.1 V to 5.5 V.

What happens if one of the VCC inputs is disconnected?

If either VCC input is below 100 mV or disconnected, all outputs are disabled and enter a high-impedance state.