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Product Detailed Parameters
- Description：DIFFERENTIAL COMPARATOR WITH STR
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：Differential
- Number of Elements：1
- Output Type：Open-Collector, Open-Emitter
- Voltage - Supply, Single/Dual (±)：3.5V ~ 30V, ±1.75V ~ 15V
- Voltage - Input Offset (Max)：3mV @ ±15V
- Current - Input Bias (Max)：0.1µA @ ±15V
- Current - Output (Typ)：-
- Current - Quiescent (Max)：5mA, 6mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：165ns (Typ)
- Hysteresis：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：20-CLCC
- Mounting Type：Surface Mount
- Supplier Device Package：20-LCCC (8.89x8.89)
- Grade：-
- Qualification：-
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Overview
The LM111FKB is a quad differential comparator from the LM111 series, manufactured by Texas Instruments. It features four independent comparators in a 20-pin CLLCC package. The device supports supply voltages up to 30 V and can drive loads such as lamps or relays with output currents up to 50 mA at switching voltages of 50 V. Key electrical specifications include an input offset voltage of 3 mV and an operating supply current of 6 mA. All inputs and outputs are isolated from system ground.
Feature Summary
- Quad differential comparator configuration
- Outputs isolated from system ground
- Capable of driving lamps or relays
Applications
- Lamp driving circuits
- Relay switching applications
- Voltage switching systems
Procurement Notes
Verify the exact part number LM111FKB against official Texas Instruments documentation to ensure compatibility. Confirm package type is 20-Pin CLLCC. Check for RoHS compliance status if required. Ensure supply voltage limits do not exceed 30 V during operation.
Selection Notes
Select this component when a quad comparator with ground-isolated I/O is required. Consider the 50 mA output current capability for direct load driving. Verify that the 3 mV input offset voltage meets application precision needs. Ensure the 20-pin CLLCC package fits the design constraints.
Part Context
The LM111FKB belongs to the LM111 family of differential comparators. This series is designed for general-purpose comparison tasks. The FK suffix indicates the specific package and temperature range variant. It is distinct from single-channel comparators like the LM111N.
Replacement Considerations
Check for pin-compatible alternatives within the LM111 series. Verify electrical parameters match for direct substitution. Consult Texas Instruments for updated component recommendations.
