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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR 8DIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：General Purpose
- Number of Elements：1
- Output Type：DTL, MOS, Open-Collector, Open-Emitter, RTL, TTL
- Voltage - Supply, Single/Dual (±)：5V ~ 36V, ±2.5V ~ 18V
- 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-DIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：8-PDIP
- Grade：-
- Qualification：-
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Overview
The LM311N is a high-speed voltage comparator manufactured by Texas Instruments, housed in an 8-pin PDIP package. It features a single differential input configuration with an open-collector output capable of sinking up to 50 mA. The device operates on a wide supply voltage range, supporting single supplies from 2V to 30V or dual supplies from ±1V to ±15V. Key electrical characteristics include a typical response time of 200ns and a maximum input offset voltage of 6mV at 25°C.
Feature Summary
- High-speed differential comparison with rapid response times suitable for demanding signal processing applications
- Flexible power supply operation compatible with both single-ended and split-rail configurations
- Robust open-collector output stage allowing direct interfacing with various logic families
Applications
- Zero-crossing detection circuits
- Window comparator designs
- Logic level shifting between different voltage domains
Procurement Notes
Verify the manufacturer marking on the component body to confirm it originates from Texas Instruments rather than other licensees. Ensure the package matches the standard 8-pin DIP footprint and check for lead-free compliance markings if required by specific environmental regulations.
Selection Notes
Select this component when a single-channel comparator with high speed and flexible output drive is required. Consider alternative packages like SOIC if surface-mount technology is necessary, or verify if lower cost alternatives meet the specific timing requirements of the design.
Part Context
This part belongs to the LMx11 family of comparators, which are industry-standard devices known for their versatility. The 'N' suffix specifically denotes the plastic dual-in-line package variant, distinguishing it from metal can or surface-mount versions within the same functional family.
Replacement Considerations
- LM311DRG4
- LM311MX/NOPB
FAQ
What is the maximum output current capability?
The open-collector output can sink up to 50 mA.
Does the device require external pull-up resistors?
Yes, because the output is open-collector, an external pull-up resistor is required to define the high logic level.
