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SE555 Timer
SE555
Texas Instrumentsic logic timer
The SE555 Timer is a precision timing circuit capable of producing accurate time delays or oscillation in both monostable and astable modes.
In stock
Specifications
3- Operating Voltage
- 4.5V to 18V
- Supply Current
- 10mA (output low, no load, VCC = 15V) (typical)
- Temperature Range
- -55°C to +125°C
Pinout
8| Pin | Name | Functions | Notes |
|---|---|---|---|
| 1 | GND | GND | Ground |
| 2 | TRIG | GPIO | Start of timing input. TRIG < ½ CONT sets output high and discharge open. |
| 3 | OUT | GPIO | High current timer output signal |
| 4 | RESET | GPIO | Active low reset input forces output and discharge low. |
| 5 | CONT | GPIO | Input/output. Controls comparator thresholds, outputs 2/3 × VCC, allows bypass capacitor connection |
| 6 | THRES | GPIO | End of timing input. THRES > CONT sets output low and discharge low. |
| 7 | DISCH | GPIO | Output. Open collector output to discharge timing capacitor |
| 8 | VCC | POWER | Input supply voltage, 4.5V to 16V. SE555 maximum is 18V. |
Interactive pinout
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SE555
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