(ACTIVE) Differential Comparator With Strobes


Functional diagram


The LM111, LM211, and LM311 devices are single high-speed voltage comparators. These devices are designed to operate from a wide range of power-supply voltages, including ±15-V supplies for operational amplifiers and 5-V supplies for logic systems. The output levels are compatible with most TTL and MOS circuits. These comparators are capable of driving lamps or relays and switching voltages up to 50 V at 50 mA. All inputs and outputs can be isolated from system ground. The outputs can drive loads referenced to ground, VCC+ or VCC−. Offset balancing and strobe capabilities are available, and the outputs can be wire-OR connected. If the strobe is low, the output is in the off state, regardless of the differential input.


  • Fast Response Time: 165 ns
  • Strobe Capability
  • Maximum Input Bias Current: 300 nA
  • Maximum Input Offset Current: 70 nA
  • Can Operate From Single 5-V Supply
  • Available in Q-Temp Automotive
    • High-Reliability Automotive Applications
    • Configuration Control and Print Support
    • Qualification to Automotive Standards
  • On Products Compliant to MIL-PRF-38535,
    All Parameters Are Tested Unless Otherwise Noted. On All Other Products, Production Processing Does Not Necessarily Include Testing of All Parameters.

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Number of Channels (#) 1   
Output Type Open Collector   
Vs (Min) (V) 3.5   
Vs (Max) (V) 30   
tRESP Low - to - High (us) 0.115   
Vos (Offset Voltage @ 25C) (Max) (mV) 7.5   
Iq per channel (Max) (mA) 7.5   
Input Bias Current (+/-) (Max) (nA) 250   
Rail-to-Rail No   
Special Features Strobe^Vos Adj Pin   
Rating Catalog   
Operating Temperature Range (C) 0 to 70   
VICR (Max) (V) 28   
VICR (Min) (V) 0.5   
Package Group PDIP^TSSOP^SO^SOIC   

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