Overview
The NE556V, produced by Texas Instruments, is a dual precision timer integrated circuit. It is essentially two NE555 timers in a single 14-pin package, providing two independent timing circuits. This device is highly versatile and can operate in both astable and monostable modes, making it suitable for a wide range of timing and oscillation applications. The NE556V is known for its stability and reliability, with features such as adjustable duty cycle and the ability to source or sink up to 200 mA of current.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 4.5 | - | 16 | V |
| Operating Temperature (TA) | 0 | - | 70 | °C |
| Output Current (IO) | - | - | ±200 | mA |
| Threshold Voltage Level | 8.8 | 10 | 11.2 | V (at VCC = 15V) |
| Trigger Voltage Level | 4.5 | 5 | 5.6 | V (at VCC = 15V) |
| Reset Voltage Level | 0.3 | 0.7 | 1 | V |
| Low-Level Output Voltage (VOL) | 0.1 | 0.25 | - | V (at IOL = 10mA, VCC = 15V) |
| High-Level Output Voltage (VOH) | 12.75 | 13.3 | - | V (at IOH = -100mA, VCC = 15V) |
| Electrostatic Discharge (ESD) Human-Body Model | - | - | ±500 | V |
Key Features
- Direct replacement for SE556/NE556
- Timing from microseconds through hours
- Operates in both astable and monostable modes
- Adjustable duty cycle
- Output can source or sink up to 200 mA of current
- Output and supply TTL-compatible
- Temperature stability better than 0.005% per °C
- Normally on and normally off output configurations
Applications
- Precision timing
- Pulse generation
- Sequential timing
- Time delay generation
- Pulse width modulation
- Pulse position modulation
- Linear ramp generator
Q & A
- What is the NE556V?
The NE556V is a dual precision timer integrated circuit produced by Texas Instruments, essentially two NE555 timers in a single package.
- What are the operating modes of the NE556V?
The NE556V can operate in both astable and monostable modes.
- What is the supply voltage range for the NE556V?
The supply voltage range for the NE556V is from 4.5V to 16V.
- What is the maximum output current of the NE556V?
The output can source or sink up to 200 mA of current.
- Is the NE556V TTL-compatible?
- What are some common applications of the NE556V?
- What is the temperature stability of the NE556V?
The temperature stability of the NE556V is better than 0.005% per °C.
- How many timers are included in the NE556V package?
The NE556V includes two independent timing circuits.
- What is the maximum operating temperature for the NE556V?
The maximum operating temperature for the NE556V is 70°C.
- What is the ESD rating for the NE556V using the human-body model?
The ESD rating for the NE556V using the human-body model is ±500V.
