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. This is the part you reach for when a data bus needs to cross a noisy harness between an ECU and a sensor module, or when you need bidirectional level translation on a mixed-voltage backplane.
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.
Supply range and output drive
The 2V to 6V supply range covers the common 3.3V and 5V logic families. Each output sources or sinks 7.8 mA.
Lifecycle and compliance
No last-time-buy risk — it is a current-generation part suitable for new designs and long-life programs. The wettable-flank package and automotive temperature grade suggest it was designed for production programs with a multi-year horizon.