Differential Comparator With Strobes - LM111


Differential Comparator With Strobes



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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Parametrics Compare all products in Comparator

Number of Channels (#)
Output Type
Vs (Min) (V)
Vs (Max) (V)
tRESP Low - to - High (us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Iq per channel (Max) (mA)
Input Bias Current (+/-) (Max) (nA)
Special Features
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
VICR (Max) (V)
VICR (Min) (V)
LM111 LM211 LM211-EP LM211-Q1 LM311
1    1    1    1    1   
Open Collector
Open Drain   
Open Collector    Open Collector
Open Drain   
Open Collector    Open Collector   
3.5    3.5    3.5    3.5    3.5   
30    30    30    30    30   
0.115    0.115    0.115    0.115    0.115   
3    3    3    3    7.5   
6    6    6    6    7.5   
100      100    100    250   
No    No      No    No   
Vos Adj Pin   
N/A    Strobe
Vos Adj Pin   
Strobe    Strobe
Vos Adj Pin   
Military    Catalog    HiRel Enhanced Product    Automotive    Catalog   
-55 to 125    -40 to 125
-40 to 85   
-40 to 125
-55 to 125   
-40 to 125    -40 to 85
0 to 70   
See datasheet (CDIP)    See datasheet (PDIP)    8SOIC: 29 mm2: 6 x 4.9(SOIC)    8SOIC: 29 mm2: 6 x 4.9(SOIC)    See datasheet (PDIP)   
28    13.8    28    28    28   
0.5    -14.7    0.5    0.5    0.5