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Name: LM239DT
Brand: STMicroelectronics
SKU: LM239DT
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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STMicroelectronics LM239DT

Part No.:: LM239DT

Manufacturer:: STMicroelectronics

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

Datasheet:: LM239DT.pdf

Description:: IC COMP QUAD LOW PWR 14SOIC

In Stock:: 24661

Quantity:: Add To Cart

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LM239DT Specifications

Package/Case:
14-SOIC (0.154, 3.90mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
General Purpose
NumberofElements:
4
OutputType:
CMOS, DTL, ECL, MOS, Open-Collector, TTL
Voltage-SupplySingle/Dual(±):
2V ~ 32V, ±1V ~ 16V
Voltage-InputOffset(Max):
5mV @ 30V
Current-InputBias(Max):
0.25µA @ 5V
Current-Output(Typ):
16mA @ 5V
Current-Quiescent(Max):
2mA
CMRRPSRR(Typ):
-
PropagationDelay(Max):
-
Hysteresis:
-
OperatingTemperature:
-40°C ~ 105°C
MountingType:
Surface Mount

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LM239DT information

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LM239DT Typical application Circuitry

The LM239DT is a pivotal model within the LM239 series, distinguished for its quadruple differential comparators. This series is specifically designed for applications requiring multiple voltage comparisons to determine the larger of two input voltages. The LM239DT is widely utilized in various applications, including control systems, touch switches, and level shifters, thanks to its versatility and reliability in performing voltage comparisons across a wide range of operating conditions.

1. Power Supply Pins (VCC and GND): The LM239DT is powered through the VCC pin, which typically accepts a wide voltage range, and the GND pin, which serves as the ground reference. To avoid operational instability, it is essential to guarantee a steady power supply to the VCC pin and a strong ground connection.

2. Input Pins (IN+ and IN- for each comparator): The LM239DT features four comparators, each with a pair of input pins: IN+ (non-inverting input) and IN- (inverting input). These inputs receive the voltages that need to be compared. Depending on the voltage differential between these two pins, the comparator emits a signal.

3. Output Pins (OUT for each comparator): Each comparator within the LM239DT has a corresponding OUT pin, which delivers the comparison result. The output normally goes high, depending on the supply voltage level, if the voltage at the IN+ pin is higher than the voltage at the IN-pin. Conversely, if the IN- voltage is higher, the output goes low.

4. Common Mode Input Voltage Range: Flexible input signal levels are made possible by the LM239DT's ability to handle a broad common-mode input voltage range, which spans from the negative supply voltage to almost the positive supply voltage.

5. Open-Collector Outputs: The outputs of the LM239DT comparators are open-collector, meaning they can be connected to different voltage levels, separate from the comparator's power supply. This feature allows for direct interfacing with other logic levels and provides the capability to wire outputs together for wired-AND logic configurations.

Designing a circuit with the LM239DT requires careful consideration of the input voltages to ensure they fall within the device's common-mode range. Additionally, since the outputs are open-collector, pull-up resistors may be needed to pull the output level to the desired high voltage when the comparator is in the off state. To guarantee steady functioning, the power supply pins must be properly decoupled. The LM239DT exemplifies the LM239 series' commitment to providing robust and flexible solutions for voltage comparison needs across a multitude of electronic applications.

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3. Are the LM239DT price and inventory displayed accurate?

The price and inventory of LM239DT 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 LM239DT?

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 LM239DT we delivered, we will accept the replacement or return of the LM239DT 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 LM239DT.

(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