SNOAA91 may   2023 TLV1812 , TLV1851 , TLV7011

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Input Types
    1. 2.1 Classic Bipolar Inputs
    2. 2.2 ESD Protected Inputs
    3. 2.3 "Fail-Safe" and "Fault Tolerant" Inputs
      1. 2.3.1 LM339 Family - The Original "Fail-Safe" Input
      2. 2.3.2 Modern "Fail-Safe" Inputs
    4. 2.4 "Over-the-Rail" Inputs
  6. 3Identifying The Difference Between The Input Types
    1. 3.1 Older Bipolar Device Inputs
    2. 3.2 Identifying ESD Clamped Inputs
    3. 3.3 Identifying "Failsafe" or "Over-The-Rail" Inputs
  7. 4Precautions for "Failsafe" and "Over-The-Rail" Inputs
  8. 5Negative Input Voltages
  9. 6Input Types Comparison Table
  10. 7Summary
  11. 8References

6 Input Types Comparison Table

Table 6-1 shows the difference between the various comparator family types.

Table 6-1 Comparison of Input Types by Family

Family

Upper
ESD
Diode?

Fault
Tolerant or
Fail-Safe?

Over-
The-
Rail?

Specified
Input
Voltage
Range

Abs Max
Input
Voltage
Range

Comments

LM111,
LM211,
LM311

N

N

N

Vee+0.5V to
Vcc-2V

 Vee to Vcc,
or ±15V,
whichever
is less		 Limited input range

LM119,
LM219,
LM319

N

N

N

Vee+2V to
Vcc-2V

 Vee to Vcc,
or ±15V,
whichever
is less		 Limited input range

LM339,
LM393,
TL331

N

Y

N

Vee to
Vcc-2V

Vee to 36 V

 Inputs Hi-Z when above Vcc, Output is correct when one input is within range. Defined output state when both outputs are above Vcc.

TLV1701,

TLV1702,

TLV1704

Y

N

N

 Vee to
Vcc		 Vee-0.5V to
Vcc+0.5V		 Inputs above Vcc clamps to Vcc

TLV181x,

TLV182x,

Y

N

N

Vee-0.2V to
Vcc+0.2V

Vcc + 0.2

 Inputs above Vcc clamps to Vcc

TLV185x,

TLV186x,

N

N

Y

Vee to
40 V

Vee to 40 V

 Output correct even when both inputs up to 40 V, independent of Vcc.

TLV701x,

TLV702x,

TLV703x,

TLV704x,

N

Y

N

 Vee-0.2V to
Vcc+0.2V

Vee to 6 V

 Inputs Hi-Z when above Vcc, Output undefined when both inputs are above Vcc.

TL331LV,

LM339LV,

LM393LV,

TLV90xx

N

Y

N

 Vee-0.2V to
Vcc+0.2V

Vee to 6 V

 Inputs Hi-Z when above Vcc, Output correct as long as one input is within range.

TLV3011,

TLV3012

Y

N

N

 Vee-0.2 V to
Vcc+0.2 V		 Vee-0.5 V to
Vcc+0.5 V		 Inputs above Vcc clamps to Vcc

TLV3011B,

TLV3012B

N

Y

N

 Vee-0.2V to
Vcc+0.2V		 Vee to 7 V Inputs Hi-Z when above Vcc, Output is correct when one input is within range. Defined output state when both outputs are above Vcc.