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Product Detailed Parameters
- Description：IC COMPARATOR 4 GEN PUR 14CDIP
- Series：-
- Mfr：Texas Instruments
- Package：Tube
- Type：General Purpose
- Number of Elements：4
- Output Type：Open-Collector, Open-Drain
- Voltage - Supply, Single/Dual (±)：2V ~ 36V, ±1V ~ 18V
- Voltage - Input Offset (Max)：2mV @ 30V
- Current - Input Bias (Max)：0.1µA @ 5V
- Current - Output (Typ)：16mA @ 5V
- Current - Quiescent (Max)：2.5mA
- CMRR, PSRR (Typ)：-
- Propagation Delay (Max)：-
- Hysteresis：-
- Operating Temperature：-55°C ~ 125°C
- Package / Case：14-CDIP (0.300", 7.62mm)
- Mounting Type：Through Hole
- Supplier Device Package：14-CDIP
- Grade：-
- Qualification：-
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Overview
The LM139AJ/PB is a quad differential comparator manufactured by Texas Instruments, housed in a CDIP-14 ceramic dual in-line package. It features four independent high-gain comparators designed for versatile analog signal processing. The device operates with a wide single or split power supply range from 2 V to 36 V. Key electrical specifications include a maximum input offset voltage of 9 mV and a typical response time of 1300 ns. It draws a low operating supply current of approximately 500 µA per channel. The output stage provides open-collector capability, allowing flexible interfacing with various logic families.
Feature Summary
- Quad differential architecture providing four independent comparison channels within a single integrated circuit
- Wide single-supply operational capability supporting voltages from 2 V up to 36 V
- Low power consumption design suitable for battery-operated or energy-efficient applications
- Open-collector outputs enabling direct interface with TTL, CMOS, and MOS logic circuits
Applications
- Precision level detection systems
- Analog-to-digital conversion interfaces
- Voltage monitoring and supervision circuits
- Peak hold circuits
Procurement Notes
Verify the specific suffix 'J' indicates the military-grade temperature range variant (-55°C to +125°C) and 'PB' denotes lead-free composition. Confirm the CDIP-14 ceramic package availability as it differs from standard plastic SOIC or DIP options. Ensure compatibility with high-reliability requirements if intended for aerospace or defense contexts. Cross-reference datasheet revisions for any updates to electrical characteristics or mechanical drawings before finalizing procurement orders.
Selection Notes
Select this component when high reliability and wide temperature operation are required compared to commercial grade variants. The ceramic package offers superior thermal stability and hermetic sealing benefits over plastic packages. Consider the 9 mV max offset voltage for applications requiring moderate precision without external trimming. Evaluate the 1300 ns response time against system speed requirements to ensure adequate performance margins.
Part Context
The LM139 series belongs to Texas Instruments' legacy line of quad comparators, originally developed by National Semiconductor. The 'J' suffix typically designates the military temperature range extension, while 'P' often refers to the ceramic DIP package style. This part represents a robust solution for industrial and military applications where long-term stability and environmental resilience are critical parameters.
Replacement Considerations
LM139J/NOPB
FAQ
What is the maximum input offset voltage for the LM139AJ/PB?
The maximum input offset voltage is specified as 9 mV.
Does the LM139AJ/PB have internal frequency compensation?
Yes, the device includes internal frequency compensation to prevent oscillation during switching transitions.
