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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR 8SO
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Type：General Purpose
- Number of Elements：1
- Output Type：DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL
- Voltage - Supply, Single/Dual (±)：3.5V ~ 30V, ±1.75V ~ 15V
- Voltage - Input Offset (Max)：7.5mV @ ±15V
- Current - Input Bias (Max)：0.25µA @ ±15V
- Current - Output (Typ)：50mA
- Current - Quiescent (Max)：7.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：8-SOIC (0.209", 5.30mm Width)
- Mounting Type：Surface Mount
- Supplier Device Package：8-SO
- Grade：-
- Qualification：-
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Overview
The LM311PSR is a single-channel differential comparator manufactured by Texas Instruments in an 8-SOIC surface-mount package. It operates on a single supply of 3.5V to 30V or dual supplies of ±1.75V to ±15V. Key electrical parameters include a maximum input offset voltage of 7.5mV at ±15V, a maximum input bias current of 0.25µA at ±15V, and a typical output current capability of 50mA. The device draws a maximum static current of 7.5mA and functions within a temperature range of 0°C to 70°C.
Feature Summary
- Features open-collector and open-emitter outputs compatible with DTL, MOS, RTL, and TTL logic families.
- Includes a strobe input for controlling the output state independently of the comparator inputs.
- Provides high-speed response characteristics suitable for general-purpose comparison tasks.
Applications
- Zero-crossing detection circuits
- Voltage level monitoring systems
- Logic interface adapters between different voltage domains
Procurement Notes
Verify the specific revision suffix (e.g., PSRG4) against the latest manufacturer datasheet to ensure compliance with current RoHS standards and material declarations. Confirm that the 8-SOIC package dimensions match the target PCB footprint requirements before finalizing procurement orders.
Selection Notes
Select this component when a single-channel comparator with flexible logic-compatible outputs is required. It is suitable for designs needing wide supply voltage ranges and low input bias currents. Ensure the application does not require the integrated strobability feature if simpler comparison is sufficient.
Part Context
This part belongs to the LMx11 family of differential comparators from Texas Instruments. It serves as a single-channel variant within a series that includes quad configurations like the LM339. The device is designed for general-purpose analog-to-digital conversion interfaces and signal conditioning applications.
Replacement Considerations
Direct pin-compatible substitutes include the LM311DR and LM311N. Verify functional equivalence regarding output drive capabilities and strobe functionality when substituting.
FAQ
What logic families are supported by the LM311PSR outputs?
The open-collector/open-emitter outputs are compatible with DTL, MOS, RTL, and TTL logic families.
Does the LM311PSR have a shutdown mode?
No, the LM311PSR does not feature a dedicated shutdown pin; it operates continuously when powered.
