Half Adder
Official
Digital
·
Generic
·
Curated by CircuitSim
Details
Manufacturer
Generic
Part number
—
Pins
4
Used in
No circuits
Added
Sep 2026
About this component
One-bit active-high half adder. SUM is A XOR B and COUT is the unsigned carry A AND B; there is no carry input.
Parameters
Logic levels
2 parameters
ParameterNameDescriptionDefault
VTH
Input threshold
Voltage above which arithmetic inputs are interpreted as logic high.
2.5 V
VHIGH
High output voltage
Voltage driven for an active logic-high arithmetic output.
5 V
Pins
Pins
4 pins
NumberNameDescription
1
A
Active-high augend input.
2
B
Active-high addend input.
3
SUM
Active-high least-significant sum bit.
4
COUT
Active-high unsigned carry output.
Public circuits using this component
No public circuits are using this component yet.
Drop Half Adder into your circuit
Official component · simulated with full SPICE accuracy · free to get started.