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The TL331B-Q1 and TL391B-Q1 devices are next-generation versions of the industry-standard TL331-Q1 comparator. Next-generation devices offer excellent 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 unit with improved negative input voltage handling. The TL331B-Q1 is a direct replacement for the TL331-Q1 "I" and "Q" versions. The TL391B-Q1 provides an alternative pinout to the TL331B-Q1.

This device contains a single voltage comparator designed to operate from a single supply over a wide range of voltages. Dual-supply operation is also possible if the voltage difference between the two supplies is between 2V and 36V and VCC is at least +1.5V above the input common-mode voltage. Drain current is not affected by supply voltage. To achieve a wired-AND relationship, the user can connect the output to another open collector output.

Compliant with automotive application requirements

Features the following AEC-Q100 qualified:

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 (Version I)

Device HBM ESD Classification Level 2

Device CDM ESD Classification Level C5

New TL331B-Q1 and TL391B-Q1

Wide supply voltage range, 2V to 36V

Low Drain Supply Current Independent of Supply Voltage: 0.43mA typical (version B)

Low Input Bias Current, 3.5nA Typical (Version B)

Low input offset voltage, 0.37mV typical (B version)

Differential input voltage range equal to maximum rated supply voltage, ±36V

Input range includes ground voltage

TL391B-Q1 offers alternative pinouts

Output compatible with TTL, MOS and CMOS Number of channels (#) 1

output open collector

Propagation delay time (μs)1

Vs (larger value) (V) 36

Vs(Min)(V)2

Vos (offset voltage at 25 degrees Celsius) (larger value) (mV) 2.5

IQ per channel (typ.) (mA) 0.21

Input Bias Current (+/-) (Maximum) (nA) 25

rail to rail

car rating

Operating Temperature Range (C) -40 to 125

Functional Standard Comparator

VICR (larger value) (V) 34.5

VICR (lower) (V) 0