Attributes
Table: Overview of 4020 IC (14-Stage Binary Ripple Counter)
| Parameter | Description/Value |
|---|---|
| Part Number | 4020 |
| Function | 14-Stage Binary Ripple Counter |
| Logic Family | CMOS |
| Supply Voltage (Vdd) | 3V to 15V |
| Maximum Clock Frequency | 12 MHz (at 10V supply) |
| Typical Propagation Delay | 600 ns at 5V |
| Operating Temperature Range | -55°C to +125°C |
| Pin Count | 16 |
| Package Types | PDIP, SOIC, TSSOP, QFN |
| Output Type | Buffered |
| Input Type | CMOS Compatible |
| Power Dissipation | Low Power Consumption |
| Reset Function | Asynchronous Master Reset |
| Clock Input | Edge-triggered |
| Quiescent Current | 10 nA (Typical) at 5V |
| High-Level Output Voltage (Voh) | 4.95V (Min) at Vdd=5V, Io=-1µA |
| Low-Level Output Voltage (Vol) | 0.05V (Max) at Vdd=5V, Io=1µA |
| Applications | Frequency division, event counting, time delay generation |
| Datasheet Reference | CD4020B, HCF4020, MC14020B |
Pinout
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | Clock | Clock input for the counter |
| 2 | Q4 | Output for the 4th stage |
| 3 | Q5 | Output for the 5th stage |
| 4 | Q6 | Output for the 6th stage |
| 5 | Q7 | Output for the 7th stage |
| 6 | Q8 | Output for the 8th stage |
| 7 | Q9 | Output for the 9th stage |
| 8 | Vss | Ground |
| 9 | Q10 | Output for the 10th stage |
| 10 | Q11 | Output for the 11th stage |
| 11 | Q12 | Output for the 12th stage |
| 12 | Q13 | Output for the 13th stage |
| 13 | Q14 | Output for the 14th stage |
| 14 | Reset | Asynchronous reset input |
| 15 | Q3 | Output for the 3rd stage |
| 16 | Vdd | Positive supply voltage |
Pin Functions
- Clock (Pin 1): The clock input is used to advance the counter on the rising edge of the clock signal.
- Reset (Pin 14): The asynchronous reset input resets all stages of the counter when held high.
- Q3 to Q14 (Pins 15, 2-6, 7, 9-13): These are the outputs of the counter, representing the binary count.
- Vdd (Pin 16): Supply voltage pin.
- Vss (Pin 8): Ground pin.
Electrical Characteristics
- Input Voltage High (Vih): 3.5V (Min) at Vdd=5V
- Input Voltage Low (Vil): 1.5V (Max) at Vdd=5V
- Output Voltage High (Voh): 4.95V (Min) at Vdd=5V, Io=-1µA
- Output Voltage Low (Vol): 0.05V (Max) at Vdd=5V, Io=1µA
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