General Description

The MAX4708/MAX4709 8-to-1 and dual 4-to-1 fault-pro-

tected multiplexers are pin compatible with the industry-

standard DG508/DG509. The MAX4708/MAX4709 are

similar to the MAX4508/MAX4509, but these devices do

not have clamp diodes to the supply rails on the switch

outputs. These multiplexers feature fault-protected

inputs, rail-to-rail signal-handling capability, and do not

require power-supply sequencing.

Both devices offer ±40V overvoltage protection with the

supplies off, ±36V protection with the supplies on, and

feature 400Ω (max) on-resistance with 15Ω (max)

matching between channels. The MAX4708/MAX4709

operate with dual supplies of ±4.5V to ±20V or a single

supply of +9V to +36V. All digital inputs have TTL logic-

compatible thresholds, ensuring both TTL and CMOS

logic compatibility when using a single +12V supply or

dual ±15V supplies.

For low-voltage applications requiring fault protection,

refer to the MAX4711/MAX4712/MAX4713 data sheet.

Applications

Data-Acquisition Systems

Industrial and Process Control

Avionics

Signal Routing

Redundancy/Backup Systems

ATE Systems

Hot Swap

Features

♦ No Power-Supply Sequencing Required

♦ All Channels Off with Power Off

♦ Rail-to-Rail Signal Handling

♦ 400Ω (max) On-Resistance

♦ ±40V Fault Protection with Power Off

♦ ±25V Fault Protection with ±15V Supplies

♦ 100ns Fault-Response Time

♦ ±4.5V to ±20V Dual Supplies

♦ +9V to +36V Single Supply

♦ TTL/CMOS-Compatible Logic Inputs

Fault-Protected, Single 8-to-1/

Dual 4-to-1 Multiplexers

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

A1

A2

GND

V+

NO1

V-

EN

A0

TOP VIEW

MAX4708

NO5

NO6

NO7

NO8

COM

NO4

NO3

NO2

SO/DIP

LOGIC

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

A1

GND

V+

NO1B

NO1A

V-

EN

A0

MAX4709

NO2B

NO3B

NO4B

COMB

COMA

NO4A

NO3A

NO2A

SO/DIP

LOGIC

Pin Configurations/Functional Diagrams

19-4804; Rev 1; 12/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

PART

TEMP RANGE

PIN-PACKAGE

MAX4708ESE

-40°C to +85°C

16 Narrow SO

MAX4708EWE

-40°C to +85°C

16 Wide SO

MAX4708EPE

-40°C to +85°C

16 Plastic DIP

MAX4709ESE

-40°C to +85°C

16 Narrow SO

MAX4709EWE

-40°C to +85°C

16 Wide SO

MAX4709EPE

-40°C to +85°C

16 Plastic DIP

Pin Configurations/Functional Diagrams continued at end of data sheet.