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Texas Instruments LM139AJB

Part No.:: LM139AJB

Manufacturer:: Texas Instruments

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

Datasheet:: LM139AJB.pdf

Description:: LM139A-MIL QUAD DIFFERENTIAL COM

In Stock:: 2835

Quantity:: Add To Cart

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LM139AJB Specifications

Package/Case:
14-CDIP (0.300, 7.62mm)
Packaging:
Bulk
Series:
-
ProductStatus:
Active
Type:
Differential
NumberofElements:
4
OutputType:
Open-Collector, CMOS, MOS, TTL
Voltage-SupplySingle/Dual(±):
2V ~ 30V, ±1V ~ 15V
Voltage-InputOffset(Max):
2mV @ 30V
Current-InputBias(Max):
0.1µA @ 5V
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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LM139AJB information

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LM139AJB Typical application Circuitry

LM139AJB

The LM139AJB is part of the LM139 series, which encompasses quadruple independent precision voltage comparators designed to operate over a wide range of voltages from a single power supply. These devices are particularly notable for their capability to directly interface with TTL (Transistor-Transistor Logic) and CMOS (Complementary Metal-Oxide-Semiconductor) due to their low input bias current. The "AJB" suffix typically denotes the package type and quality grade, suggesting a specific form factor and reliability level suitable for a variety of applications, including industrial, automotive, and consumer electronics.

1. Precision Comparison Core: The essence of the LM139AJB lies in its ability to perform precise voltage comparisons across four independent channels. This functionality is critical for applications requiring accurate decision-making capabilities based on varying voltage levels, enhancing system responsiveness and reliability.

2. Single Power Supply Operation: The device is adept at functioning within a wide voltage range, typically from 2V to 36V for single supply operations, and ±1V to ±18V for dual supply configurations. This flexibility ensures that the LM139AJB can be seamlessly integrated into diverse circuit designs without necessitating complex power management schemas.

3. Comprehensive Pin Accessibility for Versatile Integration: The LM139AJB includes 14 pins, with each comparator comprising an inverting input (pins 2, 6, 9, 13), a non-inverting input (pins 3, 5, 10, 12), and an output (pins 1, 7, 8, 14). The common power supply and ground are connected to pins 4 (Vcc+) and 11 (GND), respectively. This layout facilitates multiple comparative analyses simultaneously, allowing for sophisticated control mechanisms within electronic systems.

4. Enhanced Thermal Regulation Capabilities: Though specific details regarding the "AJB" package are not delineated, LM139 series devices are generally designed with thermal efficiency in mind. Effective heat dissipation is paramount, especially when deployed in environments prone to elevated temperatures or when the device is subjected to high levels of power consumption.

5. High-Current Output Drive: Despite its primary role as a voltage comparator, the LM139AJB is capable of driving currents up to 20mA. This feature enables the device not only to interface with digital logic levels but also to activate relays or other output devices directly, offering broader applicability across various electronic domains.

6. Stability Across Operating Conditions: The LM139AJB is engineered for stable operation, notwithstanding fluctuations in power supply voltage, ambient temperature variations, or changes in output load. This resilience assures that the comparators provide reliable and consistent performance, essential in critical control and monitoring applications.

7. Expansive Application Range: The quadruple configuration and precision of the LM139AJB make it ideal for use in multifaceted applications such as limit comparing, level shifting, voltage monitoring, and relay control circuits. Its compatibility with digital logic systems further extends its utility to include function generators, digital computing, and various forms of electronic signaling.

8. Circuit Design Considerations for Optimized Performance: Effective utilization of the LM139AJB involves careful attention to power supply decoupling, ensuring minimal voltage drop across the device, and implementing pull-up resistors on the outputs when interfacing with TTL or CMOS logic. Moreover, leveraging the quadruple comparator's capability requires thoughtful layout planning to minimize cross-talk and interference among the channels.

The LM139AJB distinguishes itself within the LM139 series as a versatile, precision voltage comparator capable of addressing the nuanced requirements of complex electronic systems. Its design and operational characteristics underscore its utility in a broad spectrum of applications, from industrial controls to consumer electronics, solidifying its role in advancing the efficacy and reliability of voltage comparison technologies.

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6. What is the process for return or replacement of LM139AJB?

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 LM139AJB we delivered, we will accept the replacement or return of the LM139AJB 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 LM139AJB.

(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