← All parts
74LS390 Dual Decade Counter
74LS390
Texas Instrumentsic logic
The SN74LS390 is a dual decade counter IC designed for digital signal processing applications, featuring two independent counters with 16 pins.
In stock
Specifications
3- Operating Voltage
- 5V Volts
- Package Type
- SOP
- Number Of Pins
- 16
Pinout
16| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | VCC | POWER | Power supply input |
| 2 | GND | GND | Ground reference |
| 3 | Q1 | GPIO | Counter output Q1 |
| 4 | Q2 | GPIO | Counter output Q2 |
| 5 | Q3 | GPIO | Counter output Q3 |
| 6 | Q4 | GPIO | Counter output Q4 |
| 7 | C1 | GPIO | Clock input C1 |
| 8 | C2 | GPIO | Clock input C2 |
| 9 | Q5 | GPIO | Counter output Q5 |
| 10 | Q6 | GPIO | Counter output Q6 |
| 11 | Q7 | GPIO | Counter output Q7 |
| 12 | Q8 | GPIO | Counter output Q8 |
| 13 | C3 | GPIO | Clock input C3 |
| 14 | C4 | GPIO | Clock input C4 |
| 15 | Q9 | GPIO | Counter output Q9 |
| 16 | Q10 | GPIO | Counter output Q10 |
Interactive pinout
Highlight:
74LS390
Click a pin to copy its name · tap a tag above to spotlight a bus.