TL331B-Q1, TL391B-Q1 and TL331-Q1 Automotive Single Comparators

1 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

2 Applications

• Automotive

• HEV/EV and power train

• Infotainment and cluster

• Body control module

3 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

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.

Device Information

PART NUMBER

PACKAGE (1)

BODY SIZE (NOM)

TL331B-Q1,

TL391B-Q1,

TL331-Q1

SOT-23 (5)

2.90 mm × 1.60 mm

(1)

For all available packages, see the orderable addendum at

the end of the datasheet.

Family Comparison Table

Specification

TL331B-Q1

TL391B-Q1

TL331I-Q1

TL331Q-Q1

Units

Supply Votlage

2 to 36

2 to 36

2 to 36

V

Total Supply Current (5V to 36V max)

0.43

0.7

0.7

mA

Temperature Range

−40 to 125

-40 to 85

-40 to 125

°C

ESD (HBM)

2000

2000

2000

V

Offset Voltage (Max over temp)

± 4

± 9

± 9

mV

Input Bias Current (typ / max)

3.5 / 25

25 / 250

25 / 250

nA

Response Time (typ)

1

1.3

1.3

µsec

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TL331-Q1, TL331B-Q1, TL391B-Q1

SLVS969F – OCTOBER 2009 – REVISED JANUARY 2021

Copyright © 2021 Texas Instruments Incorporated

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Product Folder Links: TL331-Q1 TL331B-Q1 TL391B-Q1

TL331-Q1, TL331B-Q1, TL391B-Q1

SLVS969F – OCTOBER 2009 – REVISED JANUARY 2021

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.