LMC7211

Tiny CMOS Comparator with Rail-to-Rail Input and

Push-Pull Output

General Description

The LMC7211 is a micropower CMOS comparator available

in the space saving SOT23-5 package. This makes the com-

parator ideal for space and weight critical designs. The

LMC7211 is supplied in two offset voltage grades, 5 mV and

15 mV.

The main benefits of the Tiny package are most apparent in

small portable electronic devices, such as mobile phones,

pagers, notebook computers, personal digital assistants,

and PCMCIA cards. The rail-to-rail input voltage makes the

LMC7211 a good choice for sensor interfacing, such as light

detector circuits, optical and magnetic sensors, and alarm

and status circuits.

The Tiny Comparator’s outside dimensions (length x width x

height) of 3.05mm x 3.00mm x 1.43mm allow it to fit into tight

spaces on PC boards.

Features

n Tiny SOT 23-5 package saves space

n Package is less than 1.43 mm thick

n Guaranteed specs at 2.7V, 5V, 15V supplies

n Typical supply current 7 µA at 5V

n Response time of 4 µs at 5V

n LMC7211 — push-pull output

n Input common-mode range beyond V− and V+

n Low input current

Applications

n Battery Powered Products

n Notebooks and PDAs

n PCMCIA cards

n Mobile Communications

n Alarm and Security circuits

n Direct Sensor Interface

n Replaces amplifiers used as comparators with better

performance and lower current

Connection Diagrams

Package

Ordering

NSC Drawing

Package

Transport Media

Information

Number

Marking

8-Pin SO-8

LMC7211AIM

M08A

LM7211AIM

Rails

LMC7211AIMX

M08A

LM7211AIM

2.5k Units Tape and Reel

LMC7211BIM

M08A

LM7211BIM

Rails

LMC7211BIMX

M08A

LM7211BIM

2.5k Units tape and Reel

5-Pin SOT 23-5

LMC7211AIM5

MA05A

C00A

1k Units Tape and Reel

LMC7211AIM5X

MA05A

C00A

3k Units Tape and Reel

LMC7211BIM5

MA05A

C00B

1k Units Tape and Reel

LMC7211BIM5X

MA05A

C00B

3k Units Tape and Reel

8-Pin SO-8

DS012337-1

Top View

5-Pin SOT23-5

DS012337-2

Top View

September 1999

© 1999 National Semiconductor Corporation

DS012337

www.national.com