Overview
The NE556DT is a dual precision timer/oscillator manufactured by STMicroelectronics. This component is essentially a dual version of the popular 555 timer IC, offering two independent timing circuits in a single package. It is housed in a 14-pin SO (Small Outline) package and is designed for surface mount applications. However, it is important to note that the NE556DT is currently obsolete and no longer manufactured, although substitutes are available.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 14-SO (Small Outline) |
| Mounting Type | Surface Mount |
| Number of Timers | Dual |
| Supply Voltage Range | 4.5V to 16V |
| Operating Temperature Range | -40°C to 125°C |
| Trigger Voltage | 1/3 Vcc |
| Threshold Voltage | 2/3 Vcc |
Key Features
- Dual precision timer/oscillator in a single package
- Independent timing circuits
- Surface mount SO package
- Wide supply voltage range (4.5V to 16V)
- High temperature stability
- Low power consumption
Applications
The NE556DT is suitable for various applications requiring timing and oscillation functions. These include:
- Pulse generation and modulation
- Frequency division and multiplication
- Sequential timing and delay circuits
- Alarm and timer circuits
- Automotive and industrial control systems
Q & A
- What is the NE556DT? The NE556DT is a dual precision timer/oscillator IC manufactured by STMicroelectronics.
- What package type does the NE556DT use? The NE556DT is housed in a 14-pin SO (Small Outline) package.
- Is the NE556DT still in production? No, the NE556DT is obsolete and no longer manufactured.
- What are the supply voltage and operating temperature ranges for the NE556DT? The supply voltage range is 4.5V to 16V, and the operating temperature range is -40°C to 125°C.
- What are the trigger and threshold voltages for the NE556DT? The trigger voltage is 1/3 Vcc, and the threshold voltage is 2/3 Vcc.
- What are some common applications for the NE556DT? Common applications include pulse generation, frequency division, sequential timing, alarm circuits, and automotive and industrial control systems.
- Can I use the NE556DT for surface mount applications? Yes, the NE556DT is designed for surface mount applications.
- Are there any substitutes available for the NE556DT? Yes, substitutes are available since the NE556DT is obsolete.
- Where can I find detailed specifications for the NE556DT? Detailed specifications can be found in the datasheet available from sources like Digi-Key, Mouser, and the official STMicroelectronics website.
- What is the advantage of using a dual timer IC like the NE556DT? The advantage is having two independent timing circuits in a single package, which can simplify circuit design and reduce component count.
