TXU0202DTTR

Overview

The TXU0202DTTR is a dual-bit, noninverting fixed-direction voltage-level translator manufactured by Texas Instruments. It operates with supply voltages ranging from 1.08 V to 5.5 V on both ports and supports data rates up to 200 Mbps at 3.3 V to 5.0 V. The device features Schmitt-trigger inputs, integrated static pull-down resistors, and high drive strength of up to 12 mA at 5 V. It includes an Ioff-float feature for partial-power-down modes and operates within a temperature range of -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 static pull-down resistors prevent channel floating states
• Ioff-float feature enables safe partial-power-down mode operations

Applications

• Eliminating slow or noisy input signals in digital circuits
• Driving indicator LEDs or buzzers with high current requirements
• Debouncing mechanical switches for reliable logic transitions
• General purpose I/O level shifting between different logic families
• Push-pull level shifting for UART, SPI, and JTAG interfaces

Procurement Notes

Verify the specific package type matches the DTTR suffix (SON-8) against the target PCB footprint. Confirm that the ordering suffix aligns with the required reel quantity and tape specifications. Ensure the component date code meets project lifecycle requirements. Cross-reference the manufacturer part number with authorized distributor catalogs to guarantee authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when fixed-direction translation is required rather than bidirectional shifting. It is suitable for applications needing higher drive strength compared to standard translators. Consider the SON-8 package constraints regarding thermal dissipation and board space. Verify that the control logic OE pin can be referenced to either supply rail as needed for the system architecture.

Part Context

This device belongs to the TXU0x02 family of 2-bit unidirectional voltage-level translators. It shares pinout compatibility with the TXB family, allowing for drop-in replacements in existing designs. The TXU0202 specifically supports fixed-direction data transmission, distinguishing it from bidirectional variants like the TXS series. It is designed for general-purpose logic level translation tasks.

Replacement Considerations

The TXB0102 is a pin-compatible alternative within the same product family. However, the TXU0202 offers higher drive strength capabilities not recommended for the TXB0102. Designers should verify if the fixed-direction requirement aligns with the application needs before substituting.