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Name: LM339N
Brand: National Semiconductor
SKU: LM339N
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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National Semiconductor LM339N

Part No.:: LM339N

Manufacturer:: National Semiconductor

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

Datasheet:: LM339N.pdf

Description:: LM339 QUAD DIFFERENTIAL COMPARAT

In Stock:: 2574

Quantity:: Add To Cart

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LM339N Specifications

Package/Case:
14-DIP (0.300, 7.62mm)
Packaging:
Bulk
Series:
-
ProductStatus:
Active
Type:
General Purpose
NumberofElements:
4
OutputType:
Open-Collector, CMOS, DTL, ECL, MOS, TTL
Voltage-SupplySingle/Dual(±):
2V ~ 36V, ±1V ~ 18V
Voltage-InputOffset(Max):
5mV @ 30V
Current-InputBias(Max):
0.25µA @ 5V
Current-Output(Typ):
16mA @ 5V
Current-Quiescent(Max):
2.5mA
CMRRPSRR(Typ):
-
PropagationDelay(Max):
-
Hysteresis:
10mV
OperatingTemperature:
0°C ~ 70°C
MountingType:
Through Hole

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LM339N information

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LM339N Typical application Circuitry

LM339N

The LM339N is part of the LM339 series of integrated circuits, which are well-recognized for their quad differential comparators. These devices are designed to compare the voltages presented at their input terminals and provide digital outputs based on these comparisons. The LM339 series, including the LM339N, is extensively used in various applications where accurate voltage comparison is crucial, such as in sensor interfacing, voltage level detection, and control systems.

1. Pin Configuration: The LM339N typically comes in a DIP (Dual In-line Package) with 14 pins. It features four independent comparator units, each with an inverting (IN-) and non-inverting (IN+) input, and individual outputs for each comparator. Additionally, there are pins for VCC (positive power supply) and GND (ground).

2. Power Supply Connections: The GND pin is linked to ground, and the VCC pin is connected to the positive power source. The LM339N can operate with both single and dual power supplies, and it's important to ensure that the supply voltage is within the IC's specified range.

3. Input Connections: There are inverting and non-inverting inputs on each comparator. A signal indicating which input has a greater voltage is produced by the comparators. These inputs are where the voltages to be compared are connected.

4. Output Connections: The outputs of the LM339N are open-collector, meaning they can sink current but cannot source it. Therefore, external pull-up resistors are typically connected to each output to pull the output high when the comparator is not sinking current.

5. Comparator Functionality: The LM339N is used in applications that require voltage level detection and comparison, such as in digital logic systems where analog signals need to be converted into digital signals.

6. Circuit Protection: Implementing protective elements like current limiting resistors is advisable, especially when the comparator outputs are interfaced with other components that might be sensitive to higher currents.

7. Layout Considerations: In designing a circuit with the LM339N, careful planning of the routing of inputs and outputs is essential to minimize noise and interference, particularly in analog signal paths.

Designing with the LM339N involves meticulous attention to these details to ensure it functions effectively as a voltage comparator. The LM339N's capability to provide accurate voltage comparisons across multiple channels makes it a valuable component in various electronic applications, especially where precision in voltage monitoring and control is required.

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6. What is the process for return or replacement of LM339N?

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 LM339N we delivered, we will accept the replacement or return of the LM339N 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 LM339N.

(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