LMV7235M5X National Semiconductor, LMV7235M5X Datasheet

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LMV7235M5X

Manufacturer Part Number
LMV7235M5X
Description
45 nsec, Ultra Low Power, Low Voltage, Rail-toRail Input Comparator with Open-Drain/Push-Pull Output
Manufacturer
National Semiconductor
Datasheet

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© 2002 National Semiconductor Corporation
LMV7235/LMV7239
45ns, Ultra Low Power, Low Voltage, Rail-to-Rail Input
Comparator with Open-Drain/Push-Pull Output
General Description
The LMV7235/39 are ultra low power, low voltage, 45ns
comparators. They are guaranteed to operate over the full
supply voltage range of 2.7V to 5V. These devices achieve a
45ns propagation delay while consuming only 65µA of sup-
ply current at 5V.
The LMV7235/39 have a greater than rail-to-rail common
mode voltage range. The input common mode voltage range
extends 200mV below ground and 200mV above supply,
allowing both ground and supply sensing.
The LMV7235 features an open drain output. By connecting
an external resistor, the output of the comparator can be
used as a level shifter.
The LMV7239 features a push-pull output stage. This feature
allows operation without the need of an external pull-up
resistor.
The LMV7235/39 are available in the SC70-5 and SOT23-5
packages, which are ideal for systems where small size and
low power is critical.
Typical Application
DS101359
Features
(V
fied)
n Propagation delay
n Low supply current
n Rail-to-Rail input
n Open drain and push-pull output
n Ideal for 2.7V and 5V single supply applications
n Available in space saving packages:
Applications
n Portable and battery powered systems
n Scanners
n Set top boxes
n High speed differential line receiver
n Window comparators
n Zero-crossing detectors
n High speed sampling circuits
S
and 5-pin SC70-5
= 5V, T
A
= 25˚C, Typical values unless otherwise speci-
10135902
5-pin SOT23-5
February 2002
www.national.com
65µA
45ns

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LMV7235M5X Summary of contents

Page 1

... The LMV7235/39 are available in the SC70-5 and SOT23-5 packages, which are ideal for systems where small size and low power is critical. Typical Application © 2002 National Semiconductor Corporation Features ( 25˚C, Typical values unless otherwise speci- S ...

Page 2

... Connection Diagram Ordering Information Package Part Number LMV7235M7 5-pin SC70-5 LMV7235M7X LMV7239M7 LMV7239M7X LMV7235M5 5-pin SOT23-5 LMV7235M5X LMV7239M5 LMV7239M5X Simplified Schematic www.national.com SC70-5/SOT23-5 10135903 Top View Marking Supplied as C21 1k Units Tape and Reel C21 3k Units Tape and Reel C20 1k Units Tape and Reel ...

Page 3

... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 2) Machine Body Human Model Body Differential Input Voltage Output Short Circuit Duration + − Supply Voltage ( Soldering Information Infrared or Convection (20 sec) Wave Soldering (10 sec) 2 ...

Page 4

Electrical Characteristics Unless otherwise specified, all limits guaranteed for T temperature extremes. Symbol Parameter t Propagation Delay PD t Propagation Delay Skew SKEW (LMV7239 only) t Output Rise Time r t Output Fall Time f I Output Leakage Current ...

Page 5

Electrical Characteristics Unless otherwise specified, all limits guaranteed for T temperature extremes. Symbol Parameter I Output Short Circuit Current SC I Supply Current S t Propagation Delay PD t Propagation Delay Skew SKEW (LMV7239 only) t Output Rise Time ...

Page 6

Typical Performance Characteristics Supply Current vs. Supply Voltage Sourcing Current vs. Output Voltage Sinking Current vs. Output Voltage www.national.com (Unless otherwise specified, V Sourcing Current vs. Output Voltage 10135904 Sinking Current vs. Output Voltage 10135906 Input Bias Current vs. Input ...

Page 7

Typical Performance Characteristics 25˚C). (Continued) Input Bias Current vs. Input Voltage Propagation Delay vs. Capacitive Load Propagation Delay vs. Input Overdrive (Unless otherwise specified, V Propagation Delay vs. Temperature 10135910 Propagation Delay vs. Capacitive Load 10135912 Propagation Delay vs. Input ...

Page 8

Typical Performance Characteristics 25˚C). (Continued) Propagation Delay vs. Common Mode Voltage Application Section The LMV7235/LMV7239 are single supply comparators with 45ns of propagation delay and only 65µA of supply current. The LMV7235/LMV7239 are rail-to-rail input and output. The typical input ...

Page 9

Application Section (Continued) FIGURE 1. Non-Inverting Comparator with Hysteresis A non inverting comparator with hysteresis requires a two resistor network, and a voltage reference (V verting input. When V is low, the output is also low. For the IN output ...

Page 10

Application Section (Continued) Zero-Crossing Detector The inverting input is connected to ground and the non- inverting input is connected to 100mVp-p signal. As the signal at the non-inverting input crosses 0V, the compara- tor’s output changes state. FIGURE 3. Zero-Crossing ...

Page 11

Physical Dimensions inches (millimeters) unless otherwise noted 5-Pin SC70-5 NS Package Number MAA05A 11 www.national.com ...

Page 12

... NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant ...

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