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 0: –40°C to 150°C

ambient operating temperature range (E

version)

– 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, 2V to 36V

• Low supply-current drain independent of supply

voltage:

0.43mA Typ (B version)

• Low input bias current, 3.5nA typ (B version)

• Low input offset voltage, 0.37mV typ (B Version)

• Differential input voltage range equal to maximum-

rated supply voltage, ±36V

• 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. The TL331E-Q1 extends

the temp range up to 150ºC, meeting AEC-Q100

Grade 0 temperature requirements.

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 2V to 36V and VCC is at least 1.5V

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,

TL331E-Q1

SOT-23 (5)

2.90mm × 1.60mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

Family Comparison Table

Specification

TL331B-Q1

TL391B-Q1

TL331I-Q1

TL331Q-Q1

TL331E-Q1

Units

Supply Voltage

2 to 36

2 to 36

2 to 36

2 to 36

V

Total Supply Current (5V to 36V max)

0.43

0.7

0.7

0.7

mA

Temperature Range

−40 to 125

-40 to 85

-40 to 125

-40 to 150

°C

ESD (HBM)

2000

2000

2000

2000

V

Offset Voltage (Max over temp)

± 4

± 9

± 9

± 9

mV

Input Bias Current (typ / max)

3.5 / 25

25 / 250

25 / 250

25 / 250

nA

Response Time (typ)

1

1.3

1.3

1.3

µsec

TL331-Q1, TL331B-Q1, TL391B-Q1

SLVS969H – OCTOBER 2009 – REVISED JANUARY 2025

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.