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Product Detailed Parameters
- Description：QUAD DIFFERENTIAL COMPARATOR
- 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 LM139J/SCA is a quad differential comparator manufactured by Texas Instruments. It features four independent precision voltage comparators in a single package. The device operates with a supply voltage range of 2V to 36V or ±1V to ±18V. It has an open-collector output configuration and a typical response time of 1.3 µs. The component is housed in a 14-pin CDIP package designed for through-hole installation.
Feature Summary
- Quad differential comparator architecture
- Open-collector output capability
- Wide single or dual supply voltage operation
Applications
- Precision voltage monitoring
- Voltage level detection
- Logic interface circuits
Procurement Notes
Verify the specific suffix SCA against the manufacturer's current datasheet to confirm pinout, package dimensions, and electrical characteristics match your design requirements. Ensure compliance with RoHS and lead-free standards if required by your assembly process, as legacy variants may differ.
Selection Notes
Select this component when a quad comparator with open-collector outputs is needed for high-voltage logic interfacing. Consider the 1.3 µs propagation delay for timing-sensitive applications. Verify that the CDIP package fits the available PCB real estate and manufacturing capabilities.
Part Context
The LM139 series is a widely used family of quad comparators known for compatibility with various logic families. The LM139J/SCA variant specifically denotes the ceramic dual in-line package version. It serves as a general-purpose analog comparator solution for industrial and consumer electronics.
Replacement Considerations
LM139J
FAQ
What is the output type of the LM139J/SCA?
The LM139J/SCA features an open-collector output configuration.
What is the maximum supply voltage for this comparator?
The maximum supply voltage is 36V for single supply or ±18V for dual supply operation.
