Lm393

Pin Configuration
Pin Number Pin Name Description
1 OUTPUT1 Output of Op-Amp 1
2 INPUT1- Inverting Input of Op-Amp 1
3 INPUT1+ Non-Inverting Input of Op-Amp 1
4 VEE,GND Ground or Negative Supply Voltage
5 INPUT2+ Non-Inverting Input of Op-Amp 2
6 INPUT2- Inverting Input of Op-Amp 2
7 OUTPUT2 Output of Op-Amp 2
8 VCC Positive Supply Voltage
LM393 Differential Comparator features and specifications
Dual Comparator in a single package
Wide power supply Range
Single supply – 2V to 36V
Dual supply – ±1V to ±18V
Drain Current of only 0.4mA
Input Offset Voltage is ±3mV maximum
Power Dissipation: 780mW
Can Drive most of the TTL and MOS loads
Output can be Isolated from System Ground
Low Offset Voltage and current
LM393 Comparator Introduction
The LM393 IC can be considered as the equivalent comparator version of the most popular LM358 Op-Amp. While any Op-Amp can be made to work as a voltage comparator, the LM393 proves itself to be advantages by providing an open collector output making it suitable to drive loads.

The output transistor can drive loads upto 50V and 50mA which is suitable for driving most of the TTL, MOS and RTL loads. The transistor can also make the Load to be isolated from the system ground. So if you are looking for a Voltage comparator to drive loads of these specifications then this IC might be the right choice for you.

Applications
Voltage Comparator circuits
Can drive Relay, Lamp, Motor Etc
Zero Crossing detector
Peak voltage Detector
High Voltage protection/Warning
Oscillator circuits