Share:
Specifications
SKU: 12609499
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage | Vcc | 4.5 | - | 18 | V |
| Supply Current (Each Timer) | ICC | - | 3 | - | mA |
| Output Current (Sink) | IOL | - | 200 | - | μA |
| Output Current (Source) | IOH | - | 100 | - | μA |
| Trigger Input Current | IT | - | 0.1 | - | μA |
| Threshold Input Current | ITH | - | 0.1 | - | μA |
| Reset Input Current | IR | - | 0.1 | - | μA |
| Output High Voltage | VOH | - | Vcc-1.5 | - | V |
| Output Low Voltage | VOL | - | 0.2 | - | V |
| Propagation Delay Time | tpd | - | 1.5 | - | μs |
| Temperature Range | Toper | -40 | - | 85 | °C |
Instructions for Using the NE556 Dual Timer IC
Power Supply:
- The NE556 can operate from a single supply voltage ranging from 4.5V to 18V.
- Ensure the supply voltage is stable and within the specified range to avoid damage or erratic behavior.
Pin Configuration:
- Pin 1 (Ground): Connect to the ground (0V).
- Pin 2 (Trigger 1): Connect to the trigger input for Timer 1.
- Pin 3 (Output 1): Connect to the output of Timer 1.
- Pin 4 (Reset 1): Connect to the reset input for Timer 1. Connect to Vcc for normal operation.
- Pin 5 (Control Voltage 1): Connect to a control voltage or leave open for standard operation.
- Pin 6 (Threshold 1): Connect to the threshold input for Timer 1.
- Pin 7 (Discharge 1): Connect to the discharge pin for Timer 1.
- Pin 8 (Vcc): Connect to the positive supply voltage.
- Pin 9 (Ground): Connect to the ground (0V).
- Pin 10 (Trigger 2): Connect to the trigger input for Timer 2.
- Pin 11 (Output 2): Connect to the output of Timer 2.
- Pin 12 (Reset 2): Connect to the reset input for Timer 2. Connect to Vcc for normal operation.
- Pin 13 (Control Voltage 2): Connect to a control voltage or leave open for standard operation.
- Pin 14 (Threshold 2): Connect to the threshold input for Timer 2.
- Pin 15 (Discharge 2): Connect to the discharge pin for Timer 2.
Operating Modes:
- Monostable Mode: Use for generating a single pulse when triggered.
- Astable Mode: Use for generating continuous pulses (oscillator).
Capacitor and Resistor Selection:
- For Monostable Mode: ( t = 1.1 times R times C )
- For Astable Mode: ( f = 1.44 / (R1 + 2R2) times C )
Protection:
- Use appropriate decoupling capacitors (e.g., 0.1μF) between Vcc and ground to filter out noise.
- Avoid exceeding the maximum ratings for input and output currents to prevent damage to the IC.
Testing:
- Before finalizing the circuit, test each timer individually to ensure proper functionality.
- Use an oscilloscope to verify the output waveform and timing.
Storage and Handling:
- Store the NE556 in a dry, static-free environment.
- Handle with care to avoid damaging the pins or the internal circuitry.
Inquiry - NE556
