TXU0101DCKR

Overview

The TXU0101DCKR is a single-channel, non-inverting fixed-direction voltage-level translator manufactured by Texas Instruments. It operates with dual supply voltages (VCCA and VCCB) ranging from 1.08V to 5.5V. The device supports data rates up to 200Mbps when operating between 3.3V and 5.0V. Key electrical parameters include a propagation delay of 8ns, an input leakage current of 2µA maximum, and a supply current of 2.5µA at 25°C. It features Schmitt-trigger inputs and 3-state outputs housed in a SC-70-6 package.

Feature Summary

• Schmitt-trigger inputs enable reliable translation of slow or noisy signals
• Integrated static pull-down resistors prevent channel floating
• VCC isolation feature disables outputs if either supply drops below 100mV
• OE control logic allows output enable/disable referencing either supply rail

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 DCK suffix corresponds to the SC-70-6 package configuration required for your layout. Confirm that the operating temperature range of -40°C to +125°C meets your environmental specifications. Ensure that the OE pin is properly biased to ground or the appropriate supply rail to achieve the desired high-impedance state during power cycles.

Selection Notes

Select this component when a unidirectional translation path from A to B is sufficient. The TXU0101 is suitable for applications requiring low power consumption and robust noise immunity via Schmitt triggers. It is pin-compatible with the TXB family, facilitating direct upgrades for existing designs utilizing TXB series level shifters.

Part Context

The TXU0101 belongs to Texas Instruments' family of dual-supply translating transceivers. Unlike bidirectional translators, this device enforces a fixed data direction from port A to port B. This architecture simplifies control logic by removing the need for automatic direction detection circuits, making it ideal for standard asynchronous communication protocols.

Replacement Considerations

The TXU0101 is pin-compatible with the TXB0101 family. When replacing a TXB0101DCKR, verify that the application does not require bidirectional data flow, as the TXU0101 only supports transmission from A to B.