CD4020 belongs to 4000 Series CMOS Logic Family of Integrated Circuits (IC’s) constructed with N- and P-channel enhancement mode transistors. CD4020 has a 14-Stage Binary/Ripple Counter
CD4020 has a supply voltage range of 5V to 20V, which is much higher than any contemporary logic family. It has buffered output which improves transfer characteristics by providing very high gain. All inputs are protected against static discharge with diodes to VDD and VSS.
CD4020 Features
- Wide supply voltage range: 1.0V to 15V
- High noise immunity: 0.45 VDD (typ.)
- Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS
- Medium speed operation: 8 MHz typ. at VDD = 10V
- Schmitt trigger clock input
CD4020 Specifications
Absolute Maximum Ratings
- DC Supply Voltage Range, (VDD): -0.5V to +18V
- Input Voltage Range, All Inputs: -0.5V to VDD +0.5V
- Storage Temperature Range (TSTG): -65oC to +150oC
- Lead Temperature (During Soldering): +260oC
- At Distance 1/16 ± 1/32 Inch (1.59mm ± 0.79mm) from case for 10s Maximum
CD4020 Pinout Diagram
CD4020 Pin Description
| Pin No | Pin Name | Description |
| 1 | Q12 | Output 12 of Stage Counter |
| 2 | Q13 | Output 13 of Stage Counter |
| 3 | Q14 | Output 14 of Stage Counter |
| 4 | Q6 | Output 6 of Stage Counter |
| 5 | Q5 | Output 5 of Stage Counter |
| 6 | Q7 | Output 7 of Stage Counter |
| 7 | Q4 | Output 4 of Stage Counter |
| 8 | VSS | Supply Voltage |
| 9 | Q1 | Output 1 of Stage Counter |
| 10 | Φ1 | Clock Signal |
| 11 | RESET | Reset Value |
| 12 | Q9 | Output 9 of Stage Counter |
| 13 | Q8 | Output 8 of Stage Counter |
| 14 | Q10 | Output 10 of Stage Counter |
| 15 | Q11 | Output 11 of Stage Counter |
| 16 | VDD | Drain Voltage |
CD4020 Circuit
Applications
- Control counters
- Timers
- Time-delay circuits
CD4020 Alternative Equivalent
CD4024, CD4026
Download CD4020 14-Stage Binary/Ripple Counter Datasheet from the link given below.
