420 Mbps bidirectional level translation in SOT-23-6
The SN74LXC1T45DBVR is a single-bit bidirectional voltage level translator from the 74LXC family, handling data rates up to 420 Mbps across a 1.1 V to 5.5 V supply range on both the A and B ports. This covers the common logic voltage domains from 1.2 V and 1.8 V up through 3.3 V and 5 V, so a single device bridges a 1.8 V microcontroller to a 3.3 V sensor or a 3.3 V FPGA to a 5 V peripheral without needing a direction-control pin. The bidirectional architecture uses an auto-sense topology — the output driver engages based on the input signal edge, so the same pin handles both transmit and receive. This eliminates the routing overhead of a dedicated direction line and simplifies PCB layout for I2C, SPI, UART, or GPIO interfaces where the signal direction changes dynamically.
Supply voltage flexibility and temperature range
Both VCCA and VCCB accept 1.1 V to 5.5 V independently, so the translator works with any combination of low-voltage and legacy logic rails. The 1.1 V floor supports the latest sub-1.2 V cores and memory interfaces, while the 5.5 V ceiling covers standard 5 V TTL and CMOS peripherals without external level shifting. The -40°C to 125°C operating temperature range qualifies the part for industrial control cabinets, automotive cabin electronics, and outdoor telecom equipment where the ambient temperature swings beyond the commercial 85°C limit. The SOT-23-6 package keeps the footprint small enough for space-constrained designs like sensor modules or portable instruments.
Active lifecycle and compliance status
The part is supplied in Tape & Reel (TR) or Cut Tape (CT) packaging, which suits both automated pick-and-place assembly and prototype hand-assembly quantities. No pin-compatible second source or successor is recorded — the 74LXC family is the current generation from TI for this function.