Automotive-grade quad buffer with 3-state outputs
It operates over the full automotive temperature range of -40°C to 125°C and accepts a supply voltage from 1.65V to 3.6V, making it compatible with 1.8V, 2.5V, and 3.3V logic domains. Each of the four independent buffers can source or sink 24mA, sufficient to drive typical automotive loads such as indicator LEDs, relay coils through a pre-driver, or signal lines on a CAN transceiver interface.
For a BOM destined for an ECU, TCU, or body-control module, this qualification is the gate — the SN74LVC126AQDRG4Q1 meets it.
Supply voltage range and logic-level translation
The 1.65V to 3.6V supply range allows this buffer to serve as a level translator between a 1.8V microcontroller and a 3.3V peripheral, or to sit on a mixed-voltage backplane. The 3-state outputs let multiple buffers share a common bus — each output goes high-impedance when the corresponding output-enable pin is deasserted. At 3.3V the 24mA drive provides clean edges into a 50pF load, which is the typical bus capacitance on a short automotive harness segment.
Housed in a 14-SOIC package with a 3.90mm body width, this part uses a standard footprint shared across many 74-series logic buffers. The surface-mount package is suitable for automated assembly and rework with a hot-air station.
It is ROHS3 compliant.