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74HC161 Binary Counter
SN74HC161
Texas Instrumentsic logic
The 74HC161 Binary Counter is a synchronous presettable counter with an internal carry look-ahead for high-speed counting applications.
In stock
Specifications
5- Package
- PDIP, SOIC, SOP, CDIP, LCCC, TSSOP, CFP, etc.
- Operating Voltage
- 2 V to 6 V
- Supply Current
- 80-µA Max ICC
- Resolution
- 14 ns typical tpd ns
- Temperature Range
- -55°C to 125°C for some packages
Pinout
13Low 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 | CLK | GPIO | Clock input |
| 2 | CLR | GPIO | Clear input |
| 3 | A | GPIO | Data input A |
| 4 | B | GPIO | Data input B |
| 5 | C | GPIO | Data input C |
| 6 | D | GPIO | Data input D |
| 7 | ENT | GPIO | Enable input for presetting |
| 8 | ENP | GPIO | Enable input for counting |
| 9 | QA | GPIO | Output Q0 |
| 10 | QB | GPIO | Output Q1 |
| 11 | QC | GPIO | Output Q2 |
| 12 | QD | GPIO | Output Q3 |
| 13 | RCO | GPIO | Ripple carry output |
Interactive pinout
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SN74HC161
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