Single-gate open-drain buffer for mixed-voltage buses
The SN74LVC1G07DCK3 is a single-bit, non-inverting buffer from the 74LVC family, with an open-drain output that lets it pull a line low while relying on an external pull-up resistor to define the high-level voltage. The open-drain output sinks 32 mA at the low level — enough to drive a standard logic input or an LED indicator through a series resistor.
SC-70-5 footprint and temperature grade
Housed in a 5-pin SC-70-5 (SOT-353) package, the part occupies about 2.0 mm × 2.1 mm of board area. The 0.65 mm pin pitch is fine enough that a hand-solder rework station with a fine tip handles it, but for volume production a stencil and reflow profile matching the JEDEC MSL-1 moisture sensitivity is the standard approach.