LM339 is a Quad voltage Comparator designed for use in level detection, low−level sensing, and memory applications in consumer, automotive, and industrial electronic applications. The IC has a range of working conditions a wide range of working voltages and possesses direct interfacing capability with almost every PMOS, CMOS, and NMOS device. Moreover, the IC offers a wide array of features such as I/O –ve feedback protection, low production cost, and excellent thermal cycling.
Voltage Comparator
A voltage comparator can be defined as an electronic circuit that can compare two input voltages and distinguish which one of them is at a higher level of amplitude.
There are two main types of voltage comparators:
- Non inverting Comparators
- Inverting Comparators
LM339 Pinout
LM339 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | OUTPUT 2 | Output Of Comparator 2 |
| 2 | OUTPUT 1 | Output Of Comparator 1 |
| 3 | V+ | Positive Supply Voltage |
| 4 | INV- INPUT 1 | Inverting Input Of Comparator 1 |
| 5 | NON-INV-INPUT 1 | Non Inverting Input Of Comparator 1 |
| 6 | INV- INPUT 2 | Inverting Input Of Comparator 2 |
| 7 | NON-INV-INPUT 2 | Non Inverting Input Of Comparator 2 |
| 8 | INV- INPUT 3 | Inverting Input Of Comparator 3 |
| 9 | NON-INV-INPUT 3 | Non Inverting Input Of Comparator 3 |
| 10 | INV- INPUT 4 | Inverting Input Of Comparator 4 |
| 11 | NON-INV-INPUT 4 | Non Inverting Input Of Comparator 4 |
| 12 | GND | Ground Pin |
| 13 | OUTPUT 4 | Output Of Comparator 4 |
| 14 | OUTPUT 3 | Output Of Comparator 3 |
Order Codes
| Part No | Temp: Range |
|---|---|
| LM239 | −25 to +85 |
| LM3302 | −40 to +85 |
| LM2901 | −40 to +105 |
| LM339 | 0 to +70 |
LM339 Features
- Single or Split Supply Operation
- Low Input Bias Current: 25 nA (Typ)
- Low Input Offset Current: ±5.0 nA (Typ)
- Low Input Offset Voltage
- Input Common Mode Voltage Range to GND
- Low Output Saturation Voltage: 130 mV (Typ) @ 4.0 mA
Application
- Positive and Negative feedback peak detectors
- Zero-crossing detectors
- Solenoid, relay, and lamp drivers
- Power Supervision
- Oscillators
- Peak Detectors
- Logic Voltage Translation
LM339 Datasheet
You can download this datasheet for LM339 Quad Comparator from the link given below:
See Also: CD4060 14-Stage Ripple-Carry Binary Counter -Datasheet | CD4066 Quad Bilateral Switch – Datasheet | CD4050 Hex Buffer Converter (N-inverting) – Datasheet
