Overview
The LM311PSR, produced by Texas Instruments, is a single high-speed voltage comparator. This device is part of the LM111, LM211, and LM311 family, designed to operate from a wide range of power-supply voltages, including ±15-V supplies for operational amplifiers and 5-V supplies for logic systems. The LM311PSR is particularly suited for applications requiring fast response times and high reliability, making it a versatile component in various electronic systems.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Response Time (Low-to-High-Level Output) | 165 | ns |
| Maximum Input Bias Current | 300 | nA |
| Maximum Input Offset Current | 70 | nA |
| Operating Temperature Range | 0 to 70 | °C |
| Supply Voltage Range | ±15 V, 5 V | V |
| Output Current Capability | Up to 50 mA | A |
| Output Voltage Capability | Up to 50 V | V |
| Package Type | SO (8-pin) | |
| Package Size | 6.20 mm × 5.30 mm | mm |
Key Features
- Fast Response Time: 165 ns, making it suitable for high-speed applications.
- Strobe Capability: Allows for external control of the output state.
- Low Input Bias and Offset Currents: Maximum input bias current of 300 nA and maximum input offset current of 70 nA.
- Single 5-V Supply Operation: Can operate from a single 5-V supply, in addition to ±15-V supplies.
- High-Reliability Automotive Applications: Qualified to automotive standards and compliant with MIL-PRF-38535.
- Offset Balancing and Wire-OR Capability: Outputs can be wire-OR connected, and offset balancing is available.
- Isolated Inputs and Outputs: All inputs and outputs can be isolated from system ground.
Applications
- Desktop PCs: Used in various PC components for voltage comparison and control.
- Body Control Modules: Employed in automotive systems for body control functions.
- White Goods: Used in household appliances for control and monitoring purposes.
- Building Automation: Utilized in building control systems for automation and monitoring.
- Oscillators and Peak Detectors: Suitable for use in oscillator circuits and peak detection applications.
Q & A
- What is the response time of the LM311PSR?
The response time of the LM311PSR is 165 ns for a low-to-high-level output transition.
- What is the maximum input bias current of the LM311PSR?
The maximum input bias current is 300 nA.
- Can the LM311PSR operate from a single 5-V supply?
Yes, the LM311PSR can operate from a single 5-V supply in addition to ±15-V supplies.
- What is the temperature range of the LM311PSR?
The operating temperature range of the LM311PSR is 0°C to 70°C.
- What is the output current capability of the LM311PSR?
The LM311PSR can drive currents up to 50 mA and switch voltages up to 50 V.
- Is the LM311PSR suitable for automotive applications?
Yes, it is qualified to automotive standards and compliant with MIL-PRF-38535.
- Can the inputs and outputs of the LM311PSR be isolated from system ground?
Yes, all inputs and outputs can be isolated from system ground.
- What package types are available for the LM311PSR?
The LM311PSR is available in an 8-pin SO (Small Outline) package.
- Does the LM311PSR have strobe capability?
Yes, the LM311PSR has strobe capability, allowing external control of the output state.
- Can the outputs of the LM311PSR be wire-OR connected?
Yes, the outputs can be wire-OR connected.
