Single-gate open-drain buffer for mixed-voltage buses
32mA sink and wide supply — what drives the selection
The 32mA sink capability at the output is the headline drive rating — enough to pull down a standard logic input or an LED directly, but not a high-current relay. The 1.65V to 5.5V supply range covers 1.8V, 2.5V, 3.3V, and 5V rails without a separate level shifter, which simplifies BOM consolidation on multi-voltage boards. The open-drain output means the high side is pulled up externally, so the pull-up resistor value and the bus capacitance set the rise time — factor that into the timing budget for I2C or similar open-drain lines.
The base product number is 74LVC1G07, and the DCKTG4 suffix denotes the SC-70-5 package on tape and reel.
Housed in a 5-lead SC-70-5 (SOT-353) package, this is a small surface-mount device. The SC-70 footprint is common and easy to hand-solder with a fine tip.