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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. PRODUCTION DATA.

TL331, TL331B, TL391B

SLVS238H – AUGUST 1999 – REVISED MAY 2020

TL331B, TL391B and TL331 Single Comparators

1

1 Features

1

•

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

2 Applications

•

Vacuum robot

•

Single phase UPS

•

Server PSU

•

Cordless power tool

•

Wireless infrastructure

•

Appliances

•

Building automation

•

Factory automation & control

•

Motor drives

•

Infotainment & cluster

3 Description

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 and improved negative input voltage

handling 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.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TL331,

TL331B (Preview),

TL391B (Preview)

SOT-23 (5)

2.90 mm × 1.60 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Family Comparison Table

Specification

TL331B,

TL391B

TL331I

TL331K

Units

Supply Votlage

3 to 36

2 to 30

2 to 30

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 105

°C

ESD (HBM)

2000

1000

1000

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