Overview
The LM397MF/NOPB, produced by Texas Instruments, is a single general-purpose voltage comparator designed for a wide range of applications. This device is available in a space-saving 5-pin SOT-23 package and is pin-compatible with TI's TL331, a single differential comparator. The LM397 operates from a single 5-V to 30-V power supply or a split power supply, making it versatile for various voltage requirements. It features an open-collector output stage, allowing for easy interface with TTL, CMOS, and other logic levels by connecting an external resistor to different voltage levels.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOT-23 | - |
| Number of Pins | 5 | - |
| Supply Voltage Range | 5V to 30V, ±2.5V to ±15V | V |
| Input Common Mode Range | Includes ground | - |
| Propagation Delay (Low to High) | 250 ns (Input Overdrive = 5 mV), 440 ns (Input Overdrive = 50 mV) | ns |
| Output Stage | Open-Collector | - |
| Supply Current | Approximately 2 mA | mA |
| Input Bias Current | Typically a few nA | nA |
| Input Offset Voltage | Typically a few mV | mV |
| Operating Temperature Range | -40°C to 85°C | °C |
| Junction-to-Ambient Thermal Resistance | 186 °C/W | °C/W |
Key Features
- Single general-purpose voltage comparator with an input common mode that includes ground.
- Operates from a single 5-V to 30-V power supply or a split power supply.
- Low supply current, virtually independent of the magnitude of the supply voltage.
- Open-collector output stage, allowing for easy interface with TTL, CMOS, and other logic levels.
- Space-saving 5-pin SOT-23 package, pin-compatible with TI’s TL331.
- Low input bias current and low input offset voltage.
Applications
- Pulse and square-wave generators.
- Peak detectors.
- Industrial applications.
- General-purpose voltage comparison in various electronic circuits.
Q & A
- What is the package type of the LM397MF/NOPB?
The LM397MF/NOPB is packaged in a 5-pin SOT-23 package. - What is the supply voltage range for the LM397MF/NOPB?
The device operates from a single 5-V to 30-V power supply or a split power supply (±2.5V to ±15V). - What is the propagation delay of the LM397MF/NOPB?
The propagation delay is approximately 250 ns for a 5 mV input overdrive and 440 ns for a 50 mV input overdrive. - What type of output stage does the LM397MF/NOPB have?
The LM397MF/NOPB features an open-collector output stage. - What is the typical supply current of the LM397MF/NOPB?
The typical supply current is approximately 2 mA. - What is the input bias current of the LM397MF/NOPB?
The input bias current is typically a few nA. - What is the operating temperature range of the LM397MF/NOPB?
The operating temperature range is -40°C to 85°C. - Is the LM397MF/NOPB RoHS compliant?
- What are some common applications of the LM397MF/NOPB?
- Is the LM397MF/NOPB pin-compatible with other comparators?
- What are some common applications of the LM397MF/NOPB?
