LM393 SMD Dual Comparators IC

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LM393A, LM393B SMD Dual Comparators IC.

The LM393B and LM2903B devices are the next generation versions of the industry-standard LM393 and LM2903 comparator family. These next generation B-version comparators feature lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, and improved 2 kV ESD performance and input ruggedness through dedicated ESD clamps. The LM393B and LM2903B can drop-in replace the LM293, LM393 and LM2903, for both "A" and "V" grades.

All devices consist of two independent voltage comparators that are designed to operate from a single power supply over a wide range of voltages. Quiescent current is independent of the supply voltage.

 Features :

  • Maximum rating: up to 38 V – ESD rating (HBM): 2k V
  • Low input offset: 0.37 mV
  • Low input bias current: 3.5 nA
  • Low supply-current: 200 µA per comparator
  • Faster response time of 1 µsec
  • Extended temperature range for LM393B
  • Available in tiny 2 x 2mm WSON package
  • B-version is drop-in replacement for LM293, LM393 and LM2903, A and V versions
  •  Common-mode input voltage range includes ground
  •  Differential input voltage range equal to maximum rated supply voltage: ±38 V
  • Low output saturation voltage
  • Output compatible with TTL, MOS, and CMOS

Applications :

  • Vacuum robot
  • Single phase UPS
  • Server PSU
  • Cordless power tool
  • Wireless infrastructure
  • Building automation
  • Factory automation & control
  • Motor drives
  • Infotainment & cluster
  • Inverter & UPS
  • PART NUMBER : LM393A
  • PACKAGE : SOIC (8)

LM393 PinOUT :

LM393A IC Functional Block Diagram :


Download LM393 IC Datasheet PDF 


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