Open-Drain Buffer
Official
Digital
·
Generic
·
Curated by CircuitSim
Details
Manufacturer
Generic
Part number
—
Pins
2
Used in
No circuits
Added
Sep 2026
About this component
Non-inverting MOS-style open-drain buffer. A low input sinks OUT; a high input releases OUT to high impedance, so an external pull-up is required for logic high.
Parameters
Basic settings
3 parameters
ParameterNameDescriptionDefault
VTH
Input threshold
Voltage above which IN releases the open drain.
2.5 V
RSINK
Sink resistance
Resistance from OUT to ground while the output is sinking.
20 Ω
ROFF
Released resistance
Residual resistance from OUT to ground while released.
1000000000000 Ω
Pins
Pins
2 pins
NumberNameDescription
1
IN
Active-high logic data input.
2
OUT
Open sink output; requires an external pull-up for logic high.
Public circuits using this component
No public circuits are using this component yet.
Drop Open-Drain Buffer into your circuit
Official component · simulated with full SPICE accuracy · free to get started.