MAX14850

Six-Channel Digital Isolator

Typical Operating Circuits

19-6161; Rev 2; 11/14

Ordering Information appears at end of data sheet.

PMBus is a trademark of SMIF, Inc.

EVALUATION KIT AVAILABLE

General Description

The MAX14850 is a six-channel digital isolator utilizing

Maxim’s proprietary process technology, whose monolithic

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; each 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.

buses, RS-232, RS-485/RS-422 buses, and general-pur-

pose isolation. When used as a bus isolator, extra chan-

nels are available for power monitoring and reset signals.

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

(10mm x 4mm) package (for which an evaluation kit is

available) and 16-pin QSOP (3.9mm x 4.94mm) package.

The packages are 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

● Protection from High-Voltage Environments

• 600VRMS Isolation for 60 Seconds

• Short-Circuit Protection on Unidirectional Outputs

● 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

● 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 Integrated’s

website at www.maximintegrated.com.