MAX14850

Six-Channel Digital Isolator

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Typical Operating Circuits

Typical Operating Circuits continued at end of data sheet.

19-6161; Rev 0; 3/12

Ordering Information appears at end of data sheet.

PMBus is a trademark of SMIF, Inc.

For related parts and recommended products to use with this part,

EVALUATION KIT AVAILABLE

General Description

The MAX14850 is a six-channel digital isolator utilizing

Maxim’s proprietary process technology, whose mono-

lithic design provides a compact and low-cost transfer

of digital signals between circuits with different power

domains. The technology enables low power consumption

and stable high-temperature performance.

The four unidirectional channels are each capable of

DC to 50Mbps, with two of the four channels passing

data across the isolation barrier in each direction. The

two bidirectional channels are open drain and each is

capable of data rates from DC to 2Mbps.

Independent 3.0V to 5.5V supplies on each side of the

isolator also make it suitable for use as a level translator.

busses with clock stretching, RS-232, RS-485/RS-422

busses, and general-purpose isolation. When used as

a bus isolator, extra channels are available for power

monitoring and reset signals.

The MAX14850 is available in a narrow body,16-pin SO

(10mm x 4mm) package. The SO package is specified

over the -40NC to +125NC automotive temperature range.

Applications

Industrial Control Systems

Isolated RS-232, RS-485/RS-422

Telecommunication Systems

Battery Management

Medical Systems

Benefits and Features

S

Protection from High-Voltage Environments





Short-Circuit Protection on Unidirectional

Outputs

S

Complete Digital Isolation Solution



Four Unidirectional Signal Paths: 2-In/2-Out



Two Bidirectional Open-Drain Signal Paths



50Mbps (max) Unidirectional Data Rate



2Mbps (max) Bidirectional Data Rate

S

Compatible with Many Interface Standards





SPI



RS-232, RS-422/RS-485



SMBus, PMBus Interfaces

I/OA1

RST

CS

SCLK ADC

MOSI

MISO

GPIO1

I/OA2

GPIO2

INA1

SCLK

INA2

MOSI

OUTA1

MISO

OUTA2

I/OB1

I/OB2

OUTB1

OUTB2

INB1

INB2

GPIO3

µC

GNDA

GNDB

0.1µF

0.1µF

3.3V

5V

MAX14850

ISOLATION

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.