Home Amplifiers Comparators
Home
Amplifiers
Comparators

TL331-Q1

ACTIVE

Automotive Catalog Single Differential Comparator

Order now
Data sheet

TL331-Q1

ACTIVE
Data sheet Order now

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 Automotive 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 125 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 Automotive 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 125 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
  • 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
  • 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

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 V CC 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.

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 V CC 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.
filter Find other Comparators
Download View video with transcript Video

Similar products you might be interested in

open-in-new Compare alternates
Pin-for-pin with same functionality to the compared device
NEW TL331LV-Q1 ACTIVE Automotive 1.65-V to 5.5-V, low-voltage single standard comparator with Pin 4 output Lower voltage with improved power consumption, propagation delay and offset voltage
Same functionality with different pin-out to the compared device
TLV1821-Q1 ACTIVE Automotive, single-channel micropower high-voltage comparator with open-drain output Upgraded rail-to-rail device with wider voltage range and improved power consumption, propagation delay and offset voltage

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 5
Type Title Date
* Data sheet TL331B-Q1, TL391B-Q1 and TL331-Q1 Automotive Single Comparators datasheet (Rev. G) PDF | HTML 30 Aug 2023
Application note Application Design Guidelines for LM339, LM393, TL331 Family Comparators Including the New B-versions (Rev. E) PDF | HTML 06 Jun 2024
Functional safety information TL331-Q1 Functional Safety FIT Rate and Failure Mode Distribution 10 Jan 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article A complete low-voltage backup battery solution for eCall systems PDF | HTML 05 Mar 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

AMP-PDK-EVM — Amplifier performance development kit evaluation module

The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

User guide: PDF | HTML
View Options
Simulation model

TL331 PSpice Model (Rev. E)

SLVM937E.ZIP (44 KB) - PSpice Model
Download
Simulation model

TL331 TINA-TI Reference Design (Rev. A)

SLVMCS2A.ZIP (9 KB) - TINA-TI Reference Design
Download
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Request
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
View Options
Reference designs

PMP9769 — Automotive eCall Power Supply Reference Design with Low Intermediate Voltage

This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)
Test report: PDF
Schematic: PDF
Reference designs

PMP41079 — Two-phase interleaved boost converter  reference design for Class-H audio amplifiers

This reference design demonstrates a 450-W, 2-phase interleaved boost converter reference design for the Class-H audio amplifier application. To provide supply to the external audio amplifier, the controller is able to follow the Class-H control signal from the amplifier and generate an output (...)
Test report: PDF
Reference designs

PMP9768 — Automotive eCall Power Supply Reference Design with High Intermediate Voltage

This reference design includes a complete power management solution for a standalone emergency call (eCall) system in an automotive environment. The circuit is supplied directly from the car battery rail. It also manages a backup battery to power the eCall system while the car battery rail is not (...)
Test report: PDF
Schematic: PDF
Package Pins CAD symbols, footprints & 3D models
SOT-23 (DBV) 5 Ultra Librarian
TI's Standard Terms and Conditions for Evaluation Items apply.

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
Information included:
  • Fab location
  • Assembly location

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos