is shifted through all the MAX4820s in series. When CS

goes high, all outputs update simultaneously.

The MAX4820 can also be used in a slave configuration

that allows the user to address individual devices.

Connect all the DIN pins together, and use the CS input

to address one device at a time. Drive CS low to select

a slave and input the data into the shift register. Drive

CS high to latch the data and turn on the appropriate

outputs. Typically, in this configuration only one slave is

addressed at a time.

3.3V/+5V, 8-Channel, Cascadable Relay Drivers

with Serial/Parallel Interface

_______________________________________________________________________________________

9

COMPANY

PHONE

WEBSITE

Aromat Corp.

310-524-9862 www.aromat.com

CP Clare Corp.

978-524-6700 www.crouzet.com

Coto Techonology

401-943-2686 www.cotorelay.com

Deustch Relays,

Inc.

516-499-6000 www.deutschrelays.com

Fujitsu

Takamisawa

408-745-4900 www.fujitsufta.com

Hella KG Hueck

734-414-0970 www.hella.com

COMPANY

PHONE

WEBSITE

NEC Electronics,

Inc.

800-366-9782 www.nec-global.com

Omron

Electronics, Inc.

847-843-7900 www.oeiweb.omron.com

Rockwell/Allen-

Bradley

414-382-2000 www.ab.com

Siemens

Electromechanical

Component, Inc.

770-371-3000 www.sec.siemens.com

Teledyne Relays

213-777-0077 www.teledynerelays.com

Relay Manufacturers

Typical Application Circuits

MAX4820

RESET

SET

CLK

CS

DIN

DOUT

OUT1

RELAY

COIL 1

RELAY

COIL 8

OUT8

COM

PGND

0.1

μF

GND

MAX4821

RESET

SET

A0

A1

CS

LVL

OUT1

RELAY

COIL 1

RELAY

COIL 8

OUT8

COM

PGND

0.1

μF

GND

A2