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Texas Instruments LM139J

Part No.:: LM139J

Manufacturer:: Texas Instruments

Package:: 14-CDIP (0.300, 7.62mm)

Datasheet:

Description:: IC COMP QUAD LPWR L OFF V 14CDIP

In Stock:: 2820

Quantity:: Add To Cart

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LM139J Specifications

Package/Case:
14-CDIP (0.300, 7.62mm)
Packaging:
Tube
Series:
-
ProductStatus:
Active
Type:
Differential
NumberofElements:
4
OutputType:
Open-Collector, Open-Drain
Voltage-SupplySingle/Dual(±):
2V ~ 30V, ±1V ~ 15V
Voltage-InputOffset(Max):
5mV @ 1.4V
Current-InputBias(Max):
0.1µA @ 1.4V
Current-Output(Typ):
20mA
Current-Quiescent(Max):
2mA
CMRRPSRR(Typ):
-
PropagationDelay(Max):
-
Hysteresis:
-
OperatingTemperature:
-55°C ~ 125°C
MountingType:
Through Hole

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LM139J information

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LM139J Typical application Circuitry

LM139J

The LM139J is a prominent member of the LM139 family of voltage comparators, renowned for its precision in comparing voltages across multiple channels. This device is specially crafted to facilitate accurate decision-making in electronic circuits through voltage comparison, making it indispensable in a wide range of applications. The "J" suffix typically denotes a specific package type, indicating that this version of the LM139 is designed for durability and reliability, often encapsulated in a ceramic package for enhanced thermal and electrical performance.

1. Pinnacle of Voltage Discrimination: Central to the LM139J's functionality is its ability to conduct precise voltage comparisons across four independent channels. This capability is crucial in systems where nuanced voltage monitoring is required, allowing for sophisticated control mechanisms based on the comparative results.

2. Versatile Power Supply Integration: The LM139J operates effectively with a wide input voltage range, typically from 2V up to 36V for single supply configurations, and ±1V to ±18V for dual supply modes. This flexibility ensures the LM139J's compatibility across various power environments, facilitating its integration into both low and high-voltage systems.

3. Dedicated Pin Layout for Comprehensive Control: Featuring a 14-pin configuration, the LM139J includes four inverting inputs (pins 2, 6, 9, 13), four non-inverting inputs (pins 3, 5, 10, 12), and four outputs (pins 1, 7, 8, 14), with the common power supply (Vcc+) connected to pin 4 and ground (GND) to pin 11. This arrangement enables the simultaneous processing of multiple signals, providing a robust platform for complex decision-making processes.

4. Advanced Thermal Management for Operational Stability: The ceramic package of the LM139J not only ensures the device's physical robustness but also significantly enhances its ability to dissipate heat. This feature is vital for maintaining the comparator's stability and performance, especially when operating under conditions of high power consumption or in elevated temperature environments.

5. Capability to Drive Outputs Directly: Apart from its core function as a comparator, the LM139J possesses the ability to drive significant output currents. This feature expands its utility, enabling direct control of external devices such as relays or LEDs, thus offering a versatile solution for diverse electronic applications.

6. Reliable Performance Under Varied Conditions: The LM139J is engineered to deliver unwavering performance across a spectrum of conditions, including fluctuations in input voltage, load changes, and ambient temperature variations. This reliability is paramount in applications where consistent voltage regulation is crucial to system integrity.

7. Broad Application Spectrum: The LM139J's precision in voltage comparison, combined with its ability to directly interface with TTL and CMOS logic levels, makes it ideal for a wide range of applications. These include but are not limited to, designing limit comparators, level shifters, analog-to-digital converters, and more. Its adaptability extends its use to signal processing, control systems, and monitoring circuits, underlining its significance in enhancing electronic system performance.

8. Considerations for Optimized Circuit Design: To maximize the LM139J's potential, careful attention should be given to minimizing noise interference among channels, ensuring stable power supply conditions, and implementing pull-up resistors on the outputs when interfacing with logic systems. These considerations are crucial for harnessing the full capabilities of the comparator in complex electronic systems.

The LM139J exemplifies a high level of sophistication in voltage comparison technology, offering a solution that combines precision, versatility, and reliability. Its robust ceramic package, coupled with the capability to perform accurate voltage comparisons and drive external devices directly, underscores its value in the development of advanced electronic systems. Through its contributions to improving system accuracy and reliability, the LM139J significantly advances the field of electronic design, embodying the integration of performance and durability.

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3. Are the LM139J price and inventory displayed accurate?

The price and inventory of LM139J fluctuates frequently and cannot be updated in time, it will be updated periodically within 24 hours. And, our quotation usually expires after 5 days.

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6. What is the process for return or replacement of LM139J?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the LM139J we delivered, we will accept the replacement or return of the LM139J only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of LM139J.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations