Allicdata Part #: | LM139J-ND |
Manufacturer Part#: |
LM139J/PB |
Price: | $ 7.96 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Texas Instruments |
Short Description: | IC COMP QUAD LPWR L OFF V 14CDIP |
More Detail: | Comparator General Purpose CMOS, DTL, ECL, MOS, Op... |
DataSheet: | LM139J/PB Datasheet/PDF |
Quantity: | 3542 |
Lead Free Status / RoHS Status: | Contains lead / RoHS non-compliant |
Moisture Sensitivity Level (MSL): | 1 (Unlimited) |
1 +: | $ 7.23240 |
10 +: | $ 6.53562 |
100 +: | $ 5.41076 |
500 +: | $ 4.71162 |
1000 +: | $ 4.10367 |
Series: | -- |
Packaging: | Tube |
Lead Free Status / RoHS Status: | -- |
Part Status: | Active |
Moisture Sensitivity Level (MSL): | -- |
Type: | General Purpose |
Number of Elements: | 4 |
Output Type: | CMOS, DTL, ECL, MOS, Open-Collector, TTL |
Voltage - Supply, Single/Dual (±): | 2 V ~ 36 V, ±1 V ~ 18 V |
Voltage - Input Offset (Max): | 5mV @ 30V |
Current - Input Bias (Max): | 0.1µA @ 5V |
Current - Output (Typ): | 16mA @ 5V |
Current - Quiescent (Max): | 2.5mA |
CMRR, PSRR (Typ): | -- |
Propagation Delay (Max): | -- |
Hysteresis: | -- |
Operating Temperature: | -55°C ~ 125°C |
Package / Case: | 14-CDIP (0.300", 7.62mm) |
Mounting Type: | Through Hole |
Supplier Device Package: | 14-CDIP |
Base Part Number: | LM139 |
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LM139J/PB are employed in a wide range of linear - comparators applications, which make use of the concept of comparing two signals and producing an output accordingly. Comparators are very versatile devices that may be used to compare two voltage levels, two digital states, two current levels, and/or two temperature levels. Comparators are also employed in communication systems and devices to decide when a signal exceeds a defined threshold.
Timers, analog-to-digital converters, digital-to-analog converters and many other systems use linear - comparators. A great example of a linear-comparator application is in the control systems of air-conditioners and refrigerators. Here the comparator is used to compare the actual temperature of the air or refrigerator to the target temperature set by the user and determine when to turn the cooling system on and off. The LM139J/PB comparator is one type of practical circuit used in such situations.
The working principle of the LM139J/PB is best described as a type of voltage comparator operating on the differences between two input voltages. This comparator can be operated under different power supplies by adjusting the differential voltage. It consists of five different amplifier stages, each designed to produce an output voltage which is proportional to the difference between two input voltages. These two inputs are connected to the two input terminals of the amplifier, while the output will be taken from the differential voltage output terminal.
The LM139J/PB has two modes of operation: hysteresis and non-hysteresis mode. In hysteresis mode the output is triggered when the differential voltage between the two inputs reaches a certain level (exceeds the hysteresis voltage). In the non-hysteresis mode the output is triggered when the differential voltage is equal to or above the reference voltage.
The LM139J/PB is a high speed comparator designed for use in low voltage applications. It can tolerate supply voltages from 3V to 16V, and its response time is usually in the nanosecond range making it suitable for applications such as motor control and servo systems. The maximum input voltage is typically limited to 24V, and the input current is limited to 10mA.
The LM139J/PB is also designed to have very low power consumption. It usually draws less than 2mA of input current, and the output current can be reduced to as low as 1mA in power saving mode. This makes it an ideal solution for battery operated systems. The device also has an open collector output, which can be used as an inverting or non-inverting threshold detect system with no external components.
Overall, the LM139J/PP is a powerful and reliable linear comparator with a range of features and applications. Its ability to operate on supply voltages ranging from 3V to 16V makes it ideal for a variety of low voltage applications. Its hysteresis and non-hysteresis modes of operation make it suitable for level sensing, control and timing applications, while its low power consumption makes it suited for battery operated systems. The device is widely used in communication, motor control and servo systems, and many other applications.
The specific data is subject to PDF, and the above content is for reference
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