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Comparator Single R-R O/P ±18V/36V Automotive 5-Pin SOT-23 T/R

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TL331QDBVRQ1 General Description

The TL331B-Q1 and TL391B-Q1 devices are the next generation versions of the industry-standard TL331-Q1 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, dedicated ESD protection cells with improved negative input voltage handling. The TL331B-Q1 can drop-in replace both the TL331-Q1 "I" and "Q" versions. The TL391B-Q1 provides an alternate pinout of the TL331B-Q1.

This device consists of a single voltage comparator designed to operate from a single power supply over a wide range of voltages. Operation from dual supplies also is possible if the difference between the two supplies is 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. To achieve wired-AND relationships, one can connect the output to other open-collector outputs.

Texas Instruments, Inc Inventory

Key Features

  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to 125°C ambient operating temperature range (B and Q versions)
    • Device temperature grade 3: –40°C to 85°C ambient operating temperature range (I version)
    • Device HBM ESD classification level 2
    • Device CDM ESD classification level C5
  • NEW TL331B-Q1 and TL391B-Q1
  • Wide range of supply voltage, 2 V to 36 V
  • Low supply-current drain independent of supply voltage: 0.43 mA Typ (B version)
  • Low input bias current, 3.5 nA typ (B version)
  • Low input offset voltage, 0.37 mV typ (B Version)
  • Differential input voltage range equal to maximum-rated supply voltage, ±36 V
  • Input range includes ground
  • TL391B-Q1 provides an alternate pinout
  • Output compatible With TTL, MOS and CMOS
Texas Instruments, Inc Original Stock
Texas Instruments, Inc Inventory


Category Integrated Circuits (ICs)LinearComparators Mfr Texas Instruments
Series Automotive, AEC-Q100 Package Tape & Reel (TR)Cut Tape (CT)Digi-Reel®
Product Status Active Type Differential
Number of Elements 1 Output Type CMOS, MOS, Open-Collector, TTL
Voltage - Supply, Single/Dual (±) 2V ~ 36V, ±1V ~ 18V Voltage - Input Offset (Max) 5mV @ 5V
Current - Input Bias (Max) 0.25µA @ 5V Current - Output (Typ) -
Current - Quiescent (Max) 700µA CMRR, PSRR (Typ) -
Propagation Delay (Max) - Hysteresis -
Operating Temperature -40°C ~ 125°C Package / Case SC-74A, SOT-753
Mounting Type Surface Mount Supplier Device Package SOT-23-5
Base Product Number TL331


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The delivery time is usually within 2-7 days, depending on the logistics provider and the area of delivery.

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Our policies and procedures are designed to ensure compliance with various quality specifications and to quickly resolve quality-related issues.

We promise to provide 365 days quality assurance service for all our products.

If you have any dissatisfaction with the quality of the product you received, you can contact us for a refund or exchange, as long as the product is kept in its original condition.


AVAQ determines and packages all devices based on electrostatic discharge (ESD) and moisture sensitivity level (MSL) protection requirements.
  • ESD


  • Tape and Reel

    Tape and Reel

  • Cut Tape

    Cut Tape

  • Tube or Tray

    Tube or Tray


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Buying Guide

  • What is the lifespan of TL331QDBVRQ1?

    The lifespan of TL331QDBVRQ1 depends on various factors such as the quality of materials used, operating conditions, and the manufacturer's recommended usage time. The datasheet provided by the manufacturer specifies the expected lifespan of the product.

  • Where can I find the full specification of TL331QDBVRQ1?

    You can find it with PDF Datasheet for TL331QDBVRQ1 on this page. If it is not available, you can contact Avaq at [email protected] to inquire about the Datasheet for this part.

  • How to check the quality of TL331QDBVRQ1?

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  • Can I purchase samples for testing?

    Avaq offers free samples for customers to test. This can often help you determine whether the chip or component meets your needs.

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    Once the order is completed, you will receive an order confirmation email containing a tracking number from AVAQ, then you can track the delivery by yourself.

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