4020 IC 14-Stage Binary Ripple Counter
The CD4020BE operates as a 14-stage binary ripple counter, ideal for frequency division and timing applications. The IC accepts clock pulses on its input and divides them down through a series of internal flip-flops, producing binary outputs from Q1 through Q14. Each output represents a power-of-two division of the input frequency, allowing you to create accurate time delays or divide frequencies by factors ranging from 2 to 16,384.
This IC uses CMOS technology, which ensures extremely low power consumption while maintaining compatibility with standard logic levels. You can trigger the counter on the negative edge of the clock signal and reset it anytime using the asynchronous reset pin. The device handles a wide supply voltage range (3V–15V), making it versatile for both 5V and 12V logic systems.
Key Features
14-stage binary counter
Negative-edge clock triggering
Asynchronous reset
Wide supply voltage range (3V to 15V)
Output frequency division up to 1/16,384
Very low power consumption (CMOS technology)
TTL-compatible output levels
DIP-16 through-hole package
Pin Configuration (DIP-16)
| Pin | Label | Description |
|---|---|---|
| 1 | Q12 | Output Stage 12 (divide-by-4096) |
| 2 | Q13 | Output Stage 13 (divide-by-8192) |
| 3 | Q14 | Output Stage 14 (divide-by-16,384) |
| 4 | Q6 | Output Stage 6 (divide-by-64) |
| 5 | Q5 | Output Stage 5 (divide-by-32) |
| 6 | Q7 | Output Stage 7 (divide-by-128) |
| 7 | Q9 | Output Stage 9 (divide-by-512) |
| 8 | GND | Ground |
| 9 | Q8 | Output Stage 8 (divide-by-256) |
| 10 | Q10 | Output Stage 10 (divide-by-1024) |
| 11 | Q11 | Output Stage 11 (divide-by-2048) |
| 12 | RESET | Asynchronous Reset |
| 13 | CLK (Clock) | Clock Input (negative edge triggered) |
| 14 | NC | Not Connected |
| 15 | Q4 | Output Stage 4 (divide-by-16) |
| 16 | VDD | Supply Voltage |
Product Specifications
| Parameter | Value |
|---|---|
| IC Function | 14-Stage Binary Counter |
| Logic Family | CMOS |
| Package Type | DIP-16 |
| Supply Voltage Range | 3V – 15V ‘ |
| Max Clock Frequency | 8 MHz (at 10V supply) |
| Input Type | CMOS Logic |
| Output Type | Buffered, TTL-compatible |
| Operating Temperature | -55°C to +125°C |
Applications
Frequency dividers
Time delay generators
Digital timers
LED flashers
Pulse counters
Sequencers in automation systems
Clock generation and control circuits
