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Product Detailed Parameters
- Description：IC COMPARATOR 1 GEN PUR TO99-8
- Series：-
- Mfr：Texas Instruments
- Package：Box
- 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)：-
- Current - Quiescent (Max)：7.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：0°C ~ 70°C
- Package / Case：TO-99-8 Metal Can
- Mounting Type：Through Hole
- Supplier Device Package：TO-99-8
- Grade：-
- Qualification：-
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Overview
The LM311H is a high-speed, single-channel differential voltage comparator manufactured by Texas Instruments. It operates within a supply voltage range of ±5V to ±18V and supports a maximum supply voltage of 30V. The device features an open-collector output capable of sinking up to 40mA, compatible with TTL, DTL, MOS, NMOS, and CMOS logic families. It includes strobe inputs for controlling the output state and offers low input bias current and fast response times suitable for precision applications.
Feature Summary
- Differential comparison with strobe control functionality
- Open-collector output compatible with multiple logic families
- High-speed operation with low propagation delay
- Wide single or dual power supply voltage range
Applications
- Zero-crossing detectors
- Window comparators
- Logic level shifting between different voltage domains
- Fast analog-to-digital conversion interfaces
Procurement Notes
Verify the specific suffix 'H' indicates the ceramic flatpack package variant when sourcing. Confirm RoHS compliance status as legacy packages may differ from modern plastic equivalents. Ensure the supplier provides genuine Texas Instruments components to avoid counterfeit devices affecting performance in critical timing applications.
Selection Notes
Select this component when high speed and precise differential comparison are required alongside wide supply voltage flexibility. Consider the package constraints of the ceramic flatpack form factor against PCB space limitations. Evaluate the need for strobe functionality versus continuous output modes to determine if this specific variant meets system timing requirements better than standard plastic packages.
Part Context
The LM311 series represents a family of high-performance voltage comparators widely used in industrial and consumer electronics. The LM311H specifically denotes the hermetically sealed ceramic flatpack version, offering superior thermal stability and reliability compared to standard plastic SOIC or DIP variants. It serves as a direct replacement for older National Semiconductor designs while maintaining pin compatibility.
Replacement Considerations
- LM311N
- LM311DR
FAQ
What is the maximum output current capability of the LM311H?
The open-collector output can sink up to 40mA.
Does the LM311H include internal compensation?
Yes, the device is internally compensated for stable operation without external components.
