MAX14850

Six-Channel Digital Isolator

12

Maxim Integrated

Functional Diagram

Detailed Description

The MAX14850 is a six-channel digital isolator. The

seconds. This digital isolator offers a low-power, low-cost,

high electromagnetic interference (EMI) immunity, and

stable temperature performance through Maxim’s propri-

etary process technology. The device uses a monolithic

solution to isolate different ground domains and block

high-voltage/high-current transients from sensitive or

human interface circuitry. Four of the six channels are

unidirectional, two in each direction. All four unidirec-

tional channels support data rates of up to 50Mbps. The

other two channels are bidirectional with data rates up to

2Mbps.

busses can be achieved with the MAX14850. The

independently set the logic levels on either side of the

GNDB, respectively. The MAX14850 features a refresh

mode to ensure accuracy of data when the inputs are DC.

Digital Isolation

The MAX14850 provides galvanic isolation for digital

signals that are transmitted between two ground domains.

well as transient differences of up to 850V.

Pin Description (continued)

MICROWIRE is a registered trademark of National

Semiconductor Corporation.

PIN

NAME

FUNCTION

VOLTAGE RELATIVE TO

11

I/OB1

Bidirectional Input/Output 1 on Side B. I/OB1 is translated to/from I/OA1

and is a open-drain output.

GNDB

12

INB2

Logic Input 2 on Side B. INB2 is translated to OUTA2.

GNDB

13

INB1

Logic Input 1 on Side B. INB1 is translated to OUTA1.

GNDB

14

OUTB2

Logic Output 2 on Side B. OUTB2 is a push-pull output.

GNDB

15

OUTB1

Logic Output 1 on Side B. OUTB1 is a push-pull output.

GNDB

16

capacitor to GNDB.

GNDB

MAX14850

INA1

GNDA

GNDB

DIGITAL

ISOLATOR

INA2

OUTA1

OUTA2

I/OA1

I/OA2

OUTB1

OUTB2

INB1

INB2

I/OB1

I/OB2