IN+

IN−

OUT

GND

R1

Q1

Q3

Q7

Q6

Q2

Q4

Q5

R2

R3

Q8

Q9

LMV331, LMV393, LMV339

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SLCS136T – AUGUST 1999 – REVISED JANUARY 2015

8 Detailed Description

8.1 Overview

The LMV331, LMV393 and LMV339 family of comparators have the ability to operate up to 5 V on the supply pin.

This standard device has proven ubiquity and versatility across a wide range of applications. This is due to it's

low Iq and fast response.

enable the comparator to be used in AND functionality.

8.2 Functional Block Diagram

8.3 Feature Description

The LMV331, LMV393 and LMV339 consists of a PNP input, whose Vbe creates a limit on the input common

input. This enables much head room for modern day supplies of 3.3 V and 5.0 V.

The output consists of an open drain NPN (pull-down or low side) transistor. The output NPN will sink current

current.

8.4 Device Functional Modes

8.4.1 Voltage Comparison

The LMV33x operates solely as a voltage comparator, comparing the differential voltage between the positive

and negative pins and outputs a logic low or high impedance (logic high with pull-up) based on the input

differential polarity.

Copyright © 1999–2015, Texas Instruments Incorporated

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