General Description

voltage, dual single-pole/double-throw (SPDT) analog

switches operate from a single +1.8V to +5.5V supply.

+2.7V supply. The MAX4685 features a 0.8Ω max on-

resistance for both NO and NC switches at a +2.7V

supply.

Both parts feature break-before-make switching action

tal logic inputs are 1.8V logic-compatible with a +2.7V to

+3.3V supply.

The MAX4684/MAX4685 are packaged in the chipscale

package (UCSP)™, significantly reducing the required

spaced with a 0.5mm bump pitch.

________________________Applications

Speaker Headset Switching

MP3 Players

Power Routing

Battery-Operated Equipment

Relay Replacement

Audio and Video Signal Routing

Communications Circuits

PCMCIA Cards

Cellular Phones

Modems

Features

♦ 12-Bump, 0.5mm-Pitch UCSP

0.5Ω max (+2.7V Supply) (MAX4684)

0.8Ω max (+2.7V Supply) (MAX4685)

0.8Ω max (+2.7V Supply)

0.06Ω (max)

0.15Ω (max)

♦ +1.8V to +5.5V Single-Supply Operation

♦ 1.8V Logic Compatibility

♦ Low Crosstalk: -68dB (100kHz)

♦ High Off-Isolation: -64dB (100kHz)

♦ THD: 0.03%

♦ 50nA (max) Supply Current

♦ Low Leakage Currents

Analog Switches in UCSP

________________________________________________________________ Maxim Integrated Products

1

19-1977; Rev 3; 2/03

COM2

COM1

NO2

NO1

NC2

IN2

IN1

NC1

GND

V+

TOP VIEW

IN_

0

1

NO_

MAX4684/MAX4685

OFF

ON

NC_

ON

SWITCHES SHOWN FOR LOGIC "0" INPUT

OFF

UCSP

MAX4684/MAX4685

MAX4684/MAX4685

NC2

IN1

GND

NC1

2

3

9

8

COM2

IN2

COM1

NO1

1

V+

4

5

7

6

µMAX

C1

C2

C3

C4

B4

A4

A3

A2

A1

B1

Pin Configurations/Functional Diagrams/Truth Table

UCSP is a trademark of Maxim Integrated Products, Inc.

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

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.

Continued at end of data sheet.

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

methods, circuit board material, and environment. Refer to the

UCSP Reliability Notice in the UCSP Reliability section of this

data sheet for more information.

Note: Requires special solder temperature profile describing

the Absolute Maximum Ratings section.

Ordering Information

PART

TEMP RANGE

PIN/BUMP-

PACKAGE

TOP

MARK

MAX4684EBC

-40

°C to +85°C

12 UCSP*

AAF

MAX4684ETB

-40

°C to +85°C

10 Thin QFN

AAG

MAX4684EUB

-40

°C to +85°C

10 µMAX

—

MAX4685EBC

-40

°C to +85°C

12 UCSP*

AAG

MAX4685ETB

-40

°C to +85°C

10 Thin QFN

AAH

MAX4685EUB

-40

°C to +85°C

10 µMAX

—