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74LS90 Decade Counter
74LS90
Texas Instrumentsic logic
The 74LS90 Decade Counter is a binary counter that divides by twelve or counts in decades.
In stock
Specifications
3- Operating Voltage
- 5 V
- Supply Current
- 10 mA
- Package
- CDIP, PDIP, SOIC, CFP
Pinout
14Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.
| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | Q10 | GPIO | Output of the decade counter |
| 2 | Q9 | GPIO | Output of the decade counter |
| 3 | Q8 | GPIO | Output of the decade counter |
| 4 | Q7 | GPIO | Output of the decade counter |
| 5 | Q6 | GPIO | Output of the decade counter |
| 6 | Q5 | GPIO | Output of the decade counter |
| 7 | Q4 | GPIO | Output of the decade counter |
| 8 | Q3 | GPIO | Output of the decade counter |
| 9 | Q2 | GPIO | Output of the decade counter |
| 10 | Q1 | GPIO | Output of the decade counter |
| 11 | CP | GPIO | Clock input |
| 12 | GND | GND | Ground reference |
| 13 | VCC | POWER | Supply voltage |
| 14 | LD | GPIO | Load input for presetting the counter |
Interactive pinout
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74LS90
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