Overview
The LM311PWR is a single high-speed voltage comparator produced by Texas Instruments. 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 LM311PWR is capable of driving lamps or relays and switching voltages up to 50 V at 50 mA, with all inputs and outputs isolatable from system ground. It is particularly suited for high-reliability automotive applications and is compliant with various automotive and military standards.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TSSOP-8 |
| Operating Temperature Range | 0°C to 70°C |
| Number of Terminals | 8 |
| Supply Voltage Limit | -18.0 V to 18.0 V |
| Supply Current-Max | 7.5 mA |
| Input Offset Voltage-Max | 10000.0 µV |
| Maximum Input Bias Current | 300 nA |
| Maximum Input Offset Current | 70 nA |
| Response Time-Nom | 115 ns |
| Output Type | OPEN-COLLECTOR/OPEN-EMITTER |
| Moisture Sensitivity Level | 1 |
Key Features
- Fast Response Time: 165 ns (or 115 ns nominal).
- Strobe Capability: Allows the output to be in the off state regardless of the differential input when the strobe is low.
- Maximum Input Bias Current: 300 nA and Maximum Input Offset Current: 70 nA.
- Can Operate From Single 5-V Supply: Versatile power supply options.
- High-Reliability Automotive Applications: Compliant to automotive standards and MIL-PRF-38535.
- Offset Balancing: External offset adjustment or trimming available.
- Wire-OR Connected Outputs: Outputs can be connected in a wire-OR configuration.
Applications
- Desktop PCs: Used in various computer systems for voltage comparison and level shifting.
- Body Control Modules: Suitable for automotive control systems.
- White Goods: Used in household appliances for control and monitoring.
- Building Automation: Employed in automated building control systems.
- Oscillators and Peak Detectors: Can be used in circuit designs requiring precise voltage comparison.
Q & A
- What is the operating temperature range of the LM311PWR?
The operating temperature range is 0°C to 70°C. - What is the maximum supply voltage for the LM311PWR?
The maximum supply voltage is 18.0 V, and the minimum is -18.0 V. - Can the LM311PWR operate from a single 5-V supply?
Yes, it can operate from a single 5-V supply. - What is the response time of the LM311PWR?
The response time is nominally 115 ns. - What are the output types of the LM311PWR?
The output types are OPEN-COLLECTOR/OPEN-EMITTER. - Is the LM311PWR compliant with automotive standards?
Yes, it is compliant with various automotive standards and MIL-PRF-38535. - Can the inputs and outputs of the LM311PWR be isolated from system ground?
Yes, all inputs and outputs can be isolated from system ground. - What is the maximum input offset voltage of the LM311PWR?
The maximum input offset voltage is 10000.0 µV. - What is the strobe capability of the LM311PWR?
The strobe capability allows the output to be in the off state regardless of the differential input when the strobe is low. - Can the outputs of the LM311PWR be wire-OR connected?
Yes, the outputs can be wire-OR connected.
