Half Subtractor
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 subtractor computing A minus B. DIFF is A XOR B and BOUT is high when the subtraction requires a borrow.
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 minuend input.
2
B
Active-high subtrahend input.
3
DIFF
Active-high one-bit difference output.
4
BOUT
Active-high borrow output; high when A is less than B.
Public circuits using this component
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