TXU0102DTTR

Overview

The TXU0102DTTR is a dual-supply, noninverting fixed-direction voltage-level translator with Schmitt-trigger inputs and 3-state outputs. It supports data transmission from port A to B or B to A when the OE pin is high. The device operates within a supply voltage range of 1.08 V to 5.5 V for both ports. It features low power consumption, with maximum supply currents of 2.5 µA at 25°C and 6 µA across the extended temperature range. The component includes VCC isolation and Ioff-float capabilities for partial-power-down modes.

Feature Summary

• Schmitt-trigger inputs handle slow and noisy signals while integrated static pull-down resistors prevent channel floating
• VCC isolation and disconnect (Ioff-float) feature disables all outputs if either supply drops below 100 mV or disconnects
• OE control logic utilizes VCC(MIN) circuitry allowing enable/disable control from either the A or B port logic level

Applications

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

Procurement Notes

Verify the specific package marking and orientation against the SON-8 footprint diagram before assembly. Confirm that the design accommodates the required VCCA and VCCB supply rails within the 1.08 V to 5.5 V limits. Ensure the OE pin is properly biased to maintain the desired output state during operation.

Selection Notes

Select this component for applications requiring fixed-direction translation with high drive capability up to 12 mA at 5 V. It is suitable for systems needing robust noise immunity via Schmitt triggers. Verify compatibility with existing PCB footprints as it shares pinouts with the TXB family for potential drop-in replacements.

Part Context

This part belongs to the Texas Instruments TXU0x02 series of unidirectional voltage-level translators. It is designed to interface between different logic families operating at distinct voltage levels. The device provides a reliable solution for bidirectional communication protocols where directionality is managed by the OE pin rather than automatic sensing.

Replacement Considerations

The TXB0102 offers a pin-compatible alternative but lacks the high drive strength and fixed-direction configuration support found in the TXU0102.