General Description

The MAX4721/MAX4722/MAX4723 low-voltage, low on-

analog switches operate from a single +1.8V to +5.5V

supply. These devices are designed for USB 1.1 and

audio switching applications.

The MAX4721/MAX4722/MAX4723 feature 4.5

(max) with 1.2

Ω flatness and 0.3Ω matching between

channels. These new switches feature guaranteed

operation from +1.8V to +5.5V and are fully specified at

3V and 5V. These switches offer break-before-make

+2.7V. The digital logic inputs are +1.8V logic compati-

ble with a +2.7V to +3.6V supply.

These switches are packaged in a chip-scale package

(UCSP™), significantly reducing the required PC board

0.5mm. These switches are also available in an 8-pin

µMAX package.

Applications

Battery-Operated Equipment

Audio/Video-Signal Routing

Low-Voltage Data-Acquisition Systems

Sample-and-Hold Circuits

Communications Circuits

Features

o USB 1.1 Signal Switching

o <2ns Differential Skew

o -3dB Bandwidth: >300MHz

o Low 15pF On-Channel Capacitance

4.5

Ω (max) (+3V Supply)

3

Ω (max) (+5V Supply)

o High Off-Isolation: -55dB (10MHz)

o Low Crosstalk: -80dB (10MHz)

o Low Distortion: 0.03%

o +1.8V CMOS-Logic Compatible

o Single-Supply Operation from +1.8V to +5.5V

4.5

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

19-2632; Rev 0; 10/02

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

MAX4721EUA

-40°C to +85°C

8 µMAX

—

MAX4721EBL-T*

-40°C to +85°C

9 UCSP-9

ABP

MAX4722EUA

-40°C to +85°C

8 µMAX

—

MAX4722EBL-T*

-40°C to +85°C

9 UCSP-9

ABQ

MAX4723EUA

-40°C to +85°C

8 µMAX

—

MAX4723EBL-T*

-40°C to +85°C

9 UCSP-9

ABR

MAX4721

UCSP

TOP VIEW

(BUMP SIDE DOWN)

IN_

LOW

HIGH

NO_

OFF

ON

NC_

ON

OFF

C

B

A

123

IN2

COM1

NO1

GND

V+

NO2

COM2

IN1

MAX4722

C

B

A

123

IN2

COM1

NC1

GND

V+

NC2

COM2

IN1

MAX4723

C

B

A

123

IN2

COM1

NO1

GND

V+

NC2

COM2

IN1

UCSP

UCSP

Pin Configurations/Functional Diagrams/Truth Tables

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

UCSP is a trademark of Maxim Integrated Products, Inc.

Note: UCSP package requires special solder temperature pro-

file described in the Absolute Maximum Ratings section.

*UCSP reliability is integrally linked to the user’s assembly meth-

ods, circuit board material, and environment. See the UCSP reli-

ability notice in the UCSP Reliability section of this data sheet for

more information.