LMC7221

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SNOS748E – SEPTEMBER 1999 – REVISED MARCH 2013

LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output

Check for Samples: LMC7221

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FEATURES

DESCRIPTION

The LM7221 is a micropower CMOS comparator

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•

Tiny 5-Pin SOT-23 package saves space

available in the space saving 5-Pin SOT-23 package.

•

Package is less than 1.43 mm thick

This makes this comparator ideal for space and

•

Ensured specs at 2.7V, 5V, 15V supplies

weight

critical

designs.

The

LMC7221

is

also

available in the 8-Pin SOIC package. The LMC7221

•

Typical supply current 7

μA at 5V

is supplied in two offset voltage grades, 5 mV and 15

•

Response time of 4

μs at 5V

mV.

•

LMC7221—open drain output

The open drain output can be pulled up with a

•

Input common-mode range beyond V− and V+

resistor to a voltage which can be higher or lower

•

Low input current

than the supply voltage—this makes the part useful

for mixed voltage systems.

APPLICATIONS

For a tiny comparator with a push-pull output, please

•

Mixed voltage battery powered products

see the LMC7211 datasheet.

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Notebooks and PDAs

•

PCMCIA cards

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Mobile communications

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Alarm and security circuits

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Driving low current LEDs

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Direct sensor interface

Connection Diagram

8-Pin SOIC - Top View

5-Pin SOT-23 - Top View

Figure 1. See Package Number D0008A

Figure 2. See Package Number DBV0005A

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Copyright © 1999–2013, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.