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Decade, Divide-by-Twelve and Binary Counters
7490
ic logic
The SN5490A, SN5492A, SN5493A, SN7490A, SN7492A, and SN7493A are decade, divide-by-twelve, and binary counters used for counting pulses in digital circuits.
In stock
Specifications
2- Package
- CDIP (J), PDIP (N), SOIC (D), CFP (W)
- Operating Voltage
- 5V V
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 10th stage |
| 2 | Q9 | GPIO | Output of the 9th stage |
| 3 | Q8 | GPIO | Output of the 8th stage |
| 4 | Q7 | GPIO | Output of the 7th stage |
| 5 | Q6 | GPIO | Output of the 6th stage |
| 6 | Q5 | GPIO | Output of the 5th stage |
| 7 | Q4 | GPIO | Output of the 4th stage |
| 8 | Q3 | GPIO | Output of the 3rd stage |
| 9 | Q2 | GPIO | Output of the 2nd stage |
| 10 | Q1 | GPIO | Output of the 1st stage |
| 11 | COUT | GPIO | Carry output to next counter or latch |
| 12 | LD | GPIO | Load input, active low |
| 13 | CLK | GPIO | Clock input |
| 14 | GND | GND | Ground reference |
Interactive pinout
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7490
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