General Description

The MAX4731/MAX4732/MAX4733 low-voltage, dual,

single-pole/single-throw (SPST) analog switches oper-

ate from a single +2V to +11V supply and handle rail-

to-rail analog signals. These switches exhibit low

leakage current (0.1nA) and consume less than 0.5nW

(typ) of quiescent power, making them ideal for battery-

powered applications.

When powered from a +3V supply, these switches fea-

ture 50

matching between channels, and 9

Ω (max) flatness

over the specified signal range.

The MAX4731 has two normally open (NO) switches,

the MAX4732 has two normally closed (NC) switches,

and the MAX4733 has one NO and one NC switch. The

MAX4731/MAX4732/MAX4733 are available in 9-bump

chip-scale packages (UCSP™), along with 8-pin TDFN

required PC board area.

Applications

Battery-Powered Systems

Audio/Video-Signal Routing

Low-Voltage Data-Acquisition Systems

Cell Phones

Communications Circuits

PDAs

Features

25

Ω (max) at +5V

50

Ω (max) at +3V

o On-Resistance Matching

3

Ω (max) at +5V

3.5

Ω (max) at +3V

o Guaranteed < 0.1nA Leakage Current at

o Single-Supply Operation from +2.0V to +11V

o TTL/CMOS-Logic Compatible

o -108dB Crosstalk (1MHz)

o -72dB Off-Isolation (1MHz)

o Low Power Consumption: 0.5nW (typ)

o Rail-to-Rail Signal Handling

50

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-2645; Rev 2 12/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP

RANGE

PIN/BUMP-

PACKAGE

TOP

MARK

MAX4731EUA

-40°C to +85°C

8 µMAX

—

MAX4731ETA

-40°C to +85°C

8 TDFN-EP**

ALG

MAX4731EBL-

-40°C to +85°C

9 UCSP-9

ABV

MAX4732EUA

-40°C to +85°C

8 µMAX

—

MAX4732ETA

-40°C to +85°C

8 TDFN-EP**

ALH

MAX4732EBL-

-40°C to +85°C

9 UCSP-9

ABT

MAX4733EUA

-40°C to +85°C

8 µMAX

—

MAX4733ETA

-40°C to +85°C

8 TDFN-EP**

ALI

MAX4733EBL-

-40°C to +85°C

9 UCSP-9

ABS

NO2

V+

GND

IN2

IN1

NO1

COM1

COM2

TOP VIEW

(BUMPS

ON BOTTOM)

UCSP

MAX4731

A1

B1

C1

C2

C3

B3

A3

A2

MAX4732

NC2

V+

GND

IN2

IN1

NC1

COM1

COM2

UCSP

A1

B1

C1

C2

C3

B3

A3

A2

IN_

0

1

NO_

MAX4731

OFF

ON

SWITCHES SHOWN

FOR LOGIC "0" INPUT

IN_

0

1

NC_

MAX4732

ON

OFF

SWITCHES SHOWN

FOR LOGIC "0" INPUT

COM1

GND

NO1

TDFN

MAX4731

COM2

NO2

IN1

1

2

IN2

3

4

8

7

6

5

COM1

GND

NC1

TDFN

MAX4732

IN1

COM2

V+

1

2

IN2

3

4

8

7

6

5

TOP VIEW

(BUMPS

ON BOTTOM)

V+

NC2

Pin Configurations/Functional Diagrams/Truth Tables

UCSP is a trademark of Maxim Integrated Products, Inc.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Pin Configurations/Functional

Diagrams/Truth Tables

continued at end of data sheet.

*Future product—contact factory for availability.

**EP = Exposed pad.