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Specifications
SKU: 6462945
2014-11-11
| Parameter | Symbol | Min | Typical | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | Vcc | 4.5 | - | 16 | V |
| Output Current (Sink) | IOL | - | 200 | - | mA |
| Output Current (Source) | IOH | - | 200 | - | mA |
| Trigger Input Current | ITR | - | 0.5 | - | μA |
| Threshold Input Current | IT | - | 0.5 | - | μA |
| Reset Input Current | IR | - | 0.1 | - | μA |
| Control Voltage Range | VC | 2 | - | Vcc-2 | V |
| Output Voltage (High) | VOH | - | Vcc-1.7 | - | V |
| Output Voltage (Low) | VOL | - | 0.25 | - | V |
| Power Dissipation | PD | - | 800 | - | mW |
| Operating Temperature | Toper | -40 | - | 125 | °C |
| Storage Temperature | Tstg | -65 | - | 150 | °C |
Instructions for Using the NE555V Timer IC
Supply Voltage (Vcc):
- Connect the supply voltage between 4.5V and 16V to pin 8 (Vcc) and ground to pin 1 (GND).
Trigger Input (TRIG, Pin 2):
- Apply a low signal (less than 1/3 Vcc) to trigger the timer.
- Use a resistor and capacitor in series to create a timing circuit.
Threshold Input (THRES, Pin 6):
- Apply a high signal (greater than 2/3 Vcc) to reset the timer.
- Connect this pin to the capacitor in the timing circuit.
Discharge (DISCH, Pin 7):
- Connect this pin to the capacitor in the timing circuit to discharge it.
- Can be used to control the duration of the output pulse.
Control Voltage (CTRL, Pin 5):
- This pin can be used to adjust the threshold levels.
- If not used, connect it to a 10nF capacitor to ground to stabilize the internal comparator.
Reset (RST, Pin 4):
- Apply a low signal to reset the timer.
- If not used, connect it to Vcc through a pull-up resistor.
Output (OUT, Pin 3):
- The output will be high or low depending on the state of the timer.
- Can drive loads up to 200mA.
Ground (GND, Pin 1):
- Connect to the negative terminal of the power supply.
Example Monostable Mode Circuit:
- Connect a push button to the trigger input (Pin 2) through a resistor.
- Connect a capacitor between the trigger input (Pin 2) and ground.
- Connect the capacitor also to the threshold input (Pin 6).
- Connect the discharge pin (Pin 7) to the capacitor.
- The output (Pin 3) will go high for a time determined by the RC time constant when the button is pressed.
Example Astable Mode Circuit:
- Connect two resistors (R1 and R2) in series between Vcc and ground.
- Connect the junction of R1 and R2 to the threshold input (Pin 6) and the discharge pin (Pin 7).
- Connect a capacitor between the threshold input (Pin 6) and ground.
- The output (Pin 3) will oscillate with a frequency determined by the values of R1, R2, and the capacitor.
Safety Precautions:
- Ensure the supply voltage is within the specified range to avoid damage.
- Do not exceed the maximum output current ratings.
- Avoid exposing the IC to temperatures outside the operating range.
Inquiry - NE555V
