Description
74163 High-Speed CMOS 4-Bit
Synchronous Binary Counter
DIP-16
The 74163 High-Speed CMOS 4-Bit Synchronous Binary Counter DIP-16 is a versatile digital IC designed for high-speed counting applications. It operates as a preset table 4-bit synchronous binary counter with clear and load functions, allowing precise control over counting operations. All internal operations are synchronized with the clock input, ensuring reliable and glitch-free performance. The device supports cascading for higher bit counts and is widely used in timing, frequency division, digital clocks, and control circuits. Its DIP-16 package makes it easy to use in breadboards and through-hole PCB designs, ideal for educational, prototyping, and industrial digital logic applications.
Features
4-bit high-speed synchronous binary counting capability.
Fully synchronous operation for accurate and stable performance.
Asynchronous master reset and synchronous parallel load functions.
Ripple-free operation with all outputs synchronized to the clock.
Expandable by cascading multiple counters for higher bit ranges.
TTL and CMOS compatible input levels.
Typical count frequency up to several MHz depending on supply and load.
Wide operating voltage range for flexible circuit design.
Standard 16-pin DIP package for easy mounting and prototyping.
Ideal for use in timing, sequencing, frequency division, and digital logic circuits.
Pin Configuration
Pin No.
Symbol
Description
1
CLR
Asynchronous Master Reset (Active LOW)
2
CLK
Clock Input (Rising Edge Triggered)
3
A
Parallel Data Input (LSB)
4
B
Parallel Data Input
5
C
Parallel Data Input
6
D
Parallel Data Input (MSB)
7
ENP
Count Enable Parallel Input
8
GND
Ground (0V)
9
LOAD
Synchronous Parallel Load Input (Active LOW)
10
ENT
Count Enable Trickle Input
11
QD
Output Bit 3 (MSB)
12
QC
Output Bit 2
13
QB
Output Bit 1
14
QA
Output Bit 0 (LSB)
15
RCO
Ripple Carry Output
16
VCC
Positive Supply Voltage (+5V)
Specifications
Parameter
Specification
IC Model
74163
Datasheet
74163
Type
4-Bit Synchronous Binary Counter
Technology
High-Speed CMOS / TTL Compatible
Logic Family
74 Series
Number of Bits
4-Bit
Counting Mode
Binary, Up Counter
Supply Voltage (Vcc)
4.75V – 5.25V
Maximum Clock Frequency
Up to 35 MHz
Input High Voltage (VIH) (min)
2.0V
Input Low Voltage (VIL) (max)
0.8V
Output High Voltage (VOH) (min)
2.7V
Output Low Voltage (VOL) (max)
0.4V
Propagation Delay Time
20 nsec
Reset Type
Asynchronous Master Reset
Load Function
Synchronous Parallel Load
Package Type
DIP-16
Mounting Type
Through Hole
Operating Temperature Range
0°C to +70°C
Dimensions
Applications
Digital counters and frequency dividers.
Sequential logic and state machine designs.
Digital clocks and timers.
Frequency and event counting circuits.
LED or display driving systems.
Pulse generation and timing control units.
Binary counting and arithmetic operations in digital systems.
Microcontroller and digital circuit prototyping.
Control and sequencing logic in automation systems.
Package Contents
1 x
74163 High-Speed CMOS 4-Bit Synchronous Binary Counter DIP-16
Datasheet
74163
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