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 maximumrated
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.