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Product Detailed Parameters
- Description：LM139-MIL QUAD DIFFERENTIAL COMP
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Type：-
- Number of Elements：-
- Output Type：-
- Voltage - Supply, Single/Dual (±)：-
- Voltage - Input Offset (Max)：-
- Current - Input Bias (Max)：-
- Current - Output (Typ)：-
- Current - Quiescent (Max)：-
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-
- Package / Case：-
- Mounting Type：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The LM139WB is a quad differential comparator from Texas Instruments, designed for high-reliability military and aerospace applications. It operates within a supply voltage range of 2 V to 36 V and features a low operating supply current of 500 uA. The device offers rail-to-rail output capability with a response time of 300 ns. Each channel provides an output current of 6 mA. Input characteristics include a maximum input offset voltage of 5 mV and an input bias current of 25 nA. It functions in temperatures from -55 C to +125 C.
Feature Summary
- Quad differential comparator architecture optimized for precision voltage comparison
- Rail-to-rail output stage compatible with various logic families
- Extended temperature operation suitable for harsh environments
Applications
- Military electronic systems requiring high reliability
- Aerospace instrumentation and control circuits
- Precision voltage monitoring in defense equipment
Procurement Notes
Verify the specific suffix WB indicates the military/aerospace grade variant distinct from commercial parts. Confirm RoHS status and lot traceability requirements before ordering. Ensure the procurement documentation matches the exact part number LM139WB to avoid substitution errors with standard industrial grades.
Selection Notes
Select this component when military-grade reliability and wide temperature tolerance are mandatory. Compare against standard LM139 variants if environmental constraints allow. Verify that the 300 ns response time meets system timing requirements. Ensure the 6 mA output current suffices for the load connected to the comparator outputs.
Part Context
This part belongs to the LM139 series of analog comparators. It shares functional similarities with other quad comparators but is distinguished by its ruggedized construction and extended temperature range. It serves as a specialized version of the widely used LM139 family for critical infrastructure.
Replacement Considerations
Direct substitutes may include other military-qualified quad comparators from Texas Instruments or equivalent manufacturers offering similar pinouts and performance metrics. Verify compatibility with existing board layouts and thermal management solutions.
