Quad XOR gate with Schmitt-trigger inputs for automotive logic
The SN74HCS86QBQARQ1 from Texas Instruments is a quad 2-input XOR (exclusive OR) gate from the 74HCS series, featuring Schmitt-trigger inputs on all four channels. It is qualified to AEC-Q100, the automotive stress-test standard, and rated for the full -40°C to 125°C operating temperature range. The wide supply range of 2V to 6V lets it bridge 3.3V and 5V logic domains without a translator, and the Schmitt-trigger inputs clean up slow or noisy edges from sensors, switch contacts, or long harness runs common in automotive ECUs.
What the ratings mean for the BOM
The 2 µA maximum quiescent current and 7.8 mA output drive are typical for the 74HCS family. Propagation delay is 12 ns at 6V and 50 pF load.
Lifecycle and sourcing
The SN74HCS86QBQARQ1 is an active product. For cross-reference, the SN74HCS14QDRQ1 is also AEC-Q100 qualified but is a hex inverter, not a functional replacement.
