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TL331

ACTIVE

High Voltage Single Differential Comparator

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TL331

ACTIVE
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Product details

Number of channels 1 Output type Open-collector, Open-drain Propagation delay time (µs) 1.3 Vs (max) (V) 36 Vs (min) (V) 2 Rating Catalog Features Standard comparator Iq per channel (typ) (mA) 0.4 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail In to V- Operating temperature range (°C) -40 to 105 Input bias current (±) (max) (nA) 250 VICR (max) (V) 34.5 VICR (min) (V) 0
Number of channels 1 Output type Open-collector, Open-drain Propagation delay time (µs) 1.3 Vs (max) (V) 36 Vs (min) (V) 2 Rating Catalog Features Standard comparator Iq per channel (typ) (mA) 0.4 Vos (offset voltage at 25°C) (max) (mV) 5 Rail-to-rail In to V- Operating temperature range (°C) -40 to 105 Input bias current (±) (max) (nA) 250 VICR (max) (V) 34.5 VICR (min) (V) 0
SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • NEW TL331B and TL391B
  • Improved specifications of B-version
    • Maximum rating: up to 38 V
    • ESD rating (HBM): 2k V
    • Improved reverse voltage performance
    • Low input offset: 0.37 mV
    • Low input bias current: 3.5 nA
    • Low supply-current: 430 µA
    • Faster response time of 1 µsec
    • TL391B provides an alternate pinout
  • TL331B is improved drop-in replacement for TL331
  • 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
  • NEW TL331B and TL391B
  • Improved specifications of B-version
    • Maximum rating: up to 38 V
    • ESD rating (HBM): 2k V
    • Improved reverse voltage performance
    • Low input offset: 0.37 mV
    • Low input bias current: 3.5 nA
    • Low supply-current: 430 µA
    • Faster response time of 1 µsec
    • TL391B provides an alternate pinout
  • TL331B is improved drop-in replacement for TL331
  • 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

The TL331B and TL391B devices are the next generation versions of the industry-standard TL331 comparator. These next generation devices provide outstanding value for cost-sensitive applications, with features including lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, wider temperature range and improved 2kV ESD performance with drop-in replacement convenience. The TL331B is a drop-in improved replacement for both the TL331I and TL331K versions, while the TL391B provides an alternate pinout of the TL331B to replace competitive devices.

Operation from dual supplies also is possible as long as the difference between the two supplies is within 2 V to 36 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. Current drain is independent of the supply voltage. The outputs can be connected to other open-collector outputs to achieve wired-AND relationships.

The TL331B and TL391B devices are the next generation versions of the industry-standard TL331 comparator. These next generation devices provide outstanding value for cost-sensitive applications, with features including lower offset voltage, higher supply voltage capability, lower supply current, lower input bias current, lower propagation delay, wider temperature range and improved 2kV ESD performance with drop-in replacement convenience. The TL331B is a drop-in improved replacement for both the TL331I and TL331K versions, while the TL391B provides an alternate pinout of the TL331B to replace competitive devices.

Operation from dual supplies also is possible as long as the difference between the two supplies is within 2 V to 36 V, and VCC is at least 1.5 V more positive than the input common-mode voltage. Current drain is independent of the supply voltage. The outputs can be connected to other open-collector outputs to achieve wired-AND relationships.
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Technical documentation

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Type Title Date
Application note Application Design Guidelines for LM339, LM393, TL331 Family Comparators Including the New B-versions (Rev. E) PDF | HTML 06 Jun 2024
Technical article Solving top comparator challenges: Negative inputs and phase reversal PDF | HTML 18 Jan 2022
Technical article Solving top comparator challenges: Violating input common-mode range PDF | HTML 23 Nov 2021
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017

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