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74LS590 8-bit Counter (3-state)
74LS590
Texas Instrumentsic logic
The 74LS590 is an 8-bit counter with 3-state outputs, used for counting and shifting data.
In stock
Specifications
4- Operating Voltage
- 4.0 to 5.5 V
- Supply Current
- 20 mA max
- Package
- LCCC, CDIP, PDIP, SOIC, SOP
- Temperature Range
- -55 to 125 °C
Pinout
16Low 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 | Q0 | GPIO | Output of the least significant bit |
| 2 | Q1 | GPIO | Output of the second least significant bit |
| 3 | Q2 | GPIO | Output of the third least significant bit |
| 4 | Q3 | GPIO | Output of the fourth least significant bit |
| 5 | Q4 | GPIO | Output of the fifth least significant bit |
| 6 | Q5 | GPIO | Output of the sixth least significant bit |
| 7 | Q6 | GPIO | Output of the seventh least significant bit |
| 8 | Q7 | GPIO | Output of the most significant bit |
| 9 | CP | GPIO | Clock input |
| 10 | SRCLR | GPIO | Reset input, active low |
| 11 | SH_CP | GPIO | Shift register clock input |
| 12 | ST_CP | GPIO | Storage register clock input |
| 13 | OE | GPIO | Output enable, active low |
| 14 | GND | GND | Ground |
| 15 | VCC | POWER | Supply voltage, 4.0 to 5.5 V |
| 16 | VSS | GND | Ground |
Interactive pinout
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74LS590
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