Single-bit level translator with auto-direction sensing
The TXB0101DRLR is a single-bit bidirectional voltage-level translator from Texas Instruments, built for translating logic signals between two independent supply domains. The auto-direction sensing means the output direction follows the input edge — the part detects which side is driving and switches the data path accordingly. That saves a GPIO on the controller and simplifies the layout for one-wire or open-drain interfaces where direction changes mid-packet.
100 Mbps data rate and output drive
Rated for 100 Mbps data rate, the translator supports standard SPI, UART, and I2C-like speeds with margin. The tri-state, non-inverted output lets multiple translators share a bus — the output goes high-Z when the enable is deasserted, so the line floats without contention. The SOT-5X3 package is a 1.6 mm × 1.6 mm footprint with 0.5 mm pitch — small enough for space-constrained IoT nodes or multi-channel translator arrays.