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The LM556 Dual timing circuit is a highly stable controller capable of producing accurate time delays or oscillation. The 556 is a dual 555. Timing is provided by an external resistor and capacitor for each timing function. The two timers operate independently of each other sharing only VCC and ground. The circuits may be triggered and reset on falling waveforms. The output structures may sink or source 200mA.
LM556 Pinout
LM556 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | DISCHARGE | Discharge Pin |
| 2 | THRESHOLD | Threshold Pin |
| 3 | CONTROL VOLTAGE | Voltage Control Pin |
| 4 | RESET | Reset Pin |
| 5 | OUT | Output Pin |
| 6 | TRIGGER | Trigger Pin |
| 7 | GND | Ground Pin |
| 8 | TRIGGER | Trigger Pin |
| 9 | OUT | Output Pin |
| 10 | RESET | Reset Pin |
| 11 | CONTROL VOLTAGE | Voltage Control Pin |
| 12 | THRESHOLD | Threshold Pin |
| 13 | DISCHARGE | Discharge Pin |
| 14 | VCC | Supply Voltage Pin |
LM556 Features
- Timing from microseconds through hours
- Operates in both a stable and monostable modes
- Adjustable duty cycle
- Output can source or sink 200 mA
- Output and supply TTL compatible
- Temperature stability better than 0.005% per ˚C
- Normally on and normally off output
- Available in 8-pin MSOP package
Application
- Precision timing
- Pulse generation
- Sequential timing
- Time delay generation
- Pulse width modulation
- Pulse position modulation
- Linear ramp generator
You can download this datasheet for LM556 Dual 555 Timer – Datasheet from the link given below:
