SN74LVC1T45DPKR

• Single-Bit Bidirectional Level Translation with Direction Control
• Both Supply Rails Independently 1.65V to 5.5V
• Data Rate of 420Mbps, Propagation Delay 3.9ns
• Output Drive of 32mA Sourcing and Sinking
• Quiescent Current of 3uA, Non-Inverting
• 6-Pin DFN, 1.6mm X 1.6mm, 600um height, Rated to 85C

The Texas Instruments SN74LVC1T45DPKR is a single-bit bidirectional voltage-level translator with dual supply rails, supplied in a 6-pin DFN measuring 1.6mm x 1.6mm with a 600um height and gold contact plating. Each rail accepts 1.65V to 5.5V independently, allowing translation in either direction between any two levels in that range, and a direction pin selects the flow. The record lists a 420Mbps data rate, 3.9ns propagation delay, 3uA quiescent current, non-inverting polarity and plus or minus 32mA output drive. TI rates the SN74LVC1T45DPKR to 85C ambient and lists it Active and in Production, lead free and RoHS compliant on tape and reel.

Single-bit translators are used to bridge one signal across a voltage-domain boundary: a 1.8V SoC GPIO driving a 3.3V peripheral, a 5V sensor or legacy interface feeding a 3.3V microcontroller, or a reset, chip-select, interrupt or clock line crossing between rails. Because both rails float independently across the 1.65V to 5.5V window, one part number covers most combinations a designer meets, which is why it appears repeatedly in the same BOM. The 420Mbps rating covers SPI clocks, I2S and clock forwarding, not just slow control lines. Buyers are consumer, industrial, networking and module manufacturers, often adding the part during bring-up when a domain mismatch surfaces. Note that a direction-controlled translator cannot serve an open-drain bus such as I2C, which needs an auto-direction or open-drain-specific device instead.