74LS193N 4-Bit Up/Down Binary Counter
Digital
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Generic — 74LS193N
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Curated by CircuitSim
Details
Manufacturer
Generic
Part number
74LS193N
Pins
14
Used in
No circuits
Added
Aug 2026
About this component
Synchronous four-bit up/down binary counter with separate clock inputs, active-high clear, active-low parallel load, and carry and borrow outputs for cascading.
Pins
Pins
14 pins
1
A
Parallel data input A (least-significant bit, weight 1).
2
B
Parallel data input B (bit weight 2).
3
C
Parallel data input C (bit weight 4).
4
CLR
Active-high asynchronous clear input.
5
D
Parallel data input D (most-significant bit, weight 8).
6
DOWN
Count-down clock input; a rising edge decrements the count while UP is high.
7
QA
Counter output A (least-significant bit).
8
QB
Counter output B (bit 1).
9
QC
Counter output C (bit 2).
10
QD
Counter output D (most-significant bit).
11
UP
Count-up clock input; a rising edge increments the count while DOWN is high.
12
~BO
Active-low borrow output for counter cascading.
13
~CO
Active-low carry output for counter cascading.
14
~LOAD
Active-low asynchronous parallel-load input.
Public circuits using this component
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