LM393 product image


Low power dual voltage comparator
Texas Instruments
ONSEMI [ON Semiconductor]
Unisonic Technologies
FCI [First Components International]
Wing Shing Computer Components
PHILIPS [NXP Semiconductors]
MOTOROLA [Motorola, Inc]
HTC [HTC Korea TAEJIN Technology Co.]
TAITRON [TAITRON Components Incorporated]
Shenzhen Luguang Electronic Technology Co., Ltd
Estek Electronics Co. Ltd

The  LM393  consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0 mV max for two comparators which were designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible and the low power supply current drain is independent of the magnitude of the power supply voltage. These comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage.


Application areas include limit comparators, simple analog to digital converters; pulse, squarewave and time delay generators; wide range VCO; MOS clock timers; multivibrators and high voltage digital logic gates. The designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, the will directly interface with MOS logic where their low power drain is a distinct advantage over standard comparators.
LM393 Features
  • • Wide Single−Supply Range: 2.0 Vdc to 36 Vdc
  • • Split−Supply Range: ±1.0 Vdc to ±18 Vdc
  • • Very Low Current Drain Independent of Supply Voltage: 0.4 mA
  • • Low Input Bias Current: 25 nA
  • • Low Input Offset Current: 5.0 nA
  • • Low Input Offset Voltage: 5.0 mV (max) LM293/393
  • • Input Common Mode Range to Ground Level
  • • Differential Input Voltage Range Equal to Power Supply Voltage
  • • Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS Logic Levels
  • • ESD Clamps on the Inputs Increase the Ruggedness of the Device without Affecting Performance
  • • NCV Prefix for Automotive and Other Applications Requiring Site and Control Changes
  • • Pb−Free Packages are Available



LM393 Applications
  • • A/D converters
  • • Wide range VCO
  • • MOS clock generator
  • • High voltage logic gate
  • • Multivibrators
Power Supply Voltage VCC+36 or ±18Vdc
Input Differential Voltage Range VIDR36Vdc
Input Common Mode Voltage Range VICR-0.3 to +36 Vdc
Output Short Circuit?to?Ground ISCContinuous
Output Sink Current ISink20mA
Operating Ambient Temperature Range TA0 to +70°C
Maximum Operating Junction Temperature TJ(max)150°C
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