LM393   Datasheet
Low Power Low Offset Voltage Dual Comparator
   

See Also:		   
LMV393 - Lower Voltage

Datasheet Download

Parametric Table
Temperature Min 0 deg C
Temperature Max 70 deg C
Channels 2 Channels
Response Time 0.4 us
Supply Min 2 Volt
Supply Max 36 Volt
SupplyCurrent Per Channel 0.2 mA
Parametric Table
Input Range Vcm to V-
Output Bus Open Drain
Output Current 16 mA
Offset Voltage 5 mV
Max Input Bias Current 400 nA
Special Features Undefined

Obsolete Parts

Obsolete Part Alternate Part or Supplier Source Last Time Buy Date
LM393AH
 		 LM2903
 		 NSC
 		 09/08/99
 
LM393AJ
 		 LM393N
 		 NATIONAL SEMICONDUCTOR
 		 12/07/93
 
LM393J
 		 LM393N
 		 NATIONAL SEMICONDUCTOR
 		 12/07/93
 


 

General Description

The LM193 series 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 LM193 series was designed to directly interface with TTL and CMOS. When operated from both plus and minus power supplies, the LM193 series will directly interface with MOS logic where their low power drain is a distinct advantage over standard comparators.

The LM393 and LM2903 parts are available in National's innovative thin micro SMD package with 8 (12 mil) large bumps.

Features

  • Wide supply
    Voltage range: 2.0V to 36V
    Single or dual supplies: ±1.0V to ±18V
Very low supply current drain (0.4 mA) - independent of supply voltage  
Low input biasing current: 25 nA
Low input offset current: ±5 nA
Maximum offset voltage: ±3 mV
Input common-mode voltage range includes ground  
Differential input voltage range equal to the power supply voltage  
Low output saturation voltage,: 250 mV at 4 mA
Output voltage compatible with TTL, DTL, ECL, MOS and CMOS logic systems  
Available in the 8-Bump (12 mil) micro SMD package  
See AN-1112 for micro SMD considerations  

Applications

  • High precision comparators
  • Reduced VOS drift over temperature
  • Eliminates need for dual supplies
  • Allows sensing near ground
  • Compatible with all forms of logic
  • Power drain suitable for battery operation