8-bit transceiver for mixed-voltage automotive buses
The Texas Instruments SN74HCS245QWRKSRQ1 is a single-element, 8-bit non-inverting transceiver with 3-state outputs and Schmitt-trigger inputs, housed in a 20-VQFN package with wettable flanks. It operates from 2V to 6V, covering both 3.3V and 5V logic domains without a level translator, and is rated for -40°C to 125°C — the full automotive temperature range.
Schmitt-trigger inputs and wettable-flank package
The Schmitt-trigger inputs provide hysteresis that rejects noise and slow edges on long traces or cables — a common headache on automotive CAN and LIN auxiliary buses where the transceiver sits meters from the controller. The 3-state outputs let multiple drivers share the same bus; the part tristates when the output-enable pin is deasserted, avoiding contention.
The 2V to 6V supply range covers the common 3.3V and 5V logic families. Each output sources or sinks 7.8 mA.
The wettable-flank package and automotive temperature grade suggest it was designed for production programs with a multi-year horizon.