What is the Additional Feature ?

Name: LM239DR
Brand: Texas Instruments
SKU: LM239DR
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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Texas Instruments LM239DR

Part No.:: LM239DR

Manufacturer:: Texas Instruments

Package:: 14-SOIC (0.154, 3.90mm Width)

Datasheet:: LM239DR.pdf

Description:: IC QUAD DIFF COMPARATOR 14-SOIC

In Stock:: 4735

Quantity:: Add To Cart

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LM239DR Typical application Circuitry

LM239DR

The LM239DR is a quad differential comparator of the LM239 series that may operate from a single power source across a large voltage range or from twin supplies for applications that require a bipolar input voltage range. It is tailored for applications that necessitate the comparison of voltages, featuring low input offset voltage specifications as well as high gain.

1. Power Supply and Common Connections:

- Pins 4 and 11 (GND, Vcc+): Pin 4 is the ground pin, while pin 11 serves as the positive supply voltage for the LM239DR. These are fundamental for powering the device, and their connections must be solid and low-resistance for optimal performance.

2. Comparator Input Connections:

- Pins 5, 6, 8, 9, 12, 13, 2, and 3 (Inverting and Non-Inverting Inputs): The LM239DR features four comparators. For each comparator, one pin is for the non-inverting input (+), and the adjacent pin is for the inverting input (-). These are where the voltages to be compared are applied.

3. Comparator Output Connections:

- Pins 1, 7, 14, and 10 (Outputs): The outputs of the LM239DR's comparators are obtained from these pins. They can be connected directly to other digital logic components or used to drive a transistor for applications that require switching.

4. Feedback and Biasing (If required):

- Feedback/Biasing (Not explicitly dedicated pins): While the LM239DR does not have dedicated feedback or biasing pins, these functions can be implemented through external circuitry connected to the inputs and outputs to set hysteresis or to bias the inputs as required for specific applications.

5. Device Interfacing:

- Outputs to External Circuitry: The outputs of the LM239DR may require pull-up resistors if the subsequent stage input is of high impedance, to ensure a defined logic level when the output is in the off-state.

For the LM239DR to function correctly, one should follow the application guidelines suggested in the datasheet. This includes using bypass capacitors close to the power supply pins to filter noise and disturbances. Additionally, ensuring that the input voltages do not exceed the power supply rails is crucial for preventing damage to the device. Careful routing of the inputs and outputs is necessary to prevent crosstalk between channels, especially in noise-prone environments or high-speed applications. Thermal considerations are usually minimal for the LM239DR, given its low power consumption, but proper soldering and mounting are recommended to avoid thermal stress to the device.

LM239DR information

LM239DR Specifications

Package/Case:
14-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
Differential
NumberofElements:
4
OutputType:
CMOS, MOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±):
2V ~ 30V, ±1V ~ 15V
Voltage-InputOffset(Max):
5mV @ 30V
Current-InputBias(Max):
0.25µA @ 5V
Current-Output(Typ):
20mA
Current-Quiescent(Max):
2mA
CMRRPSRR(Typ):
-
PropagationDelay(Max):
-
Hysteresis:
-
OperatingTemperature:
-25°C ~ 85°C
MountingType:
Surface Mount

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6. What is the process for return or replacement of LM239DR?

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 LM239DR we delivered, we will accept the replacement or return of the LM239DR 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 LM239DR.

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

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(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations