Figure 1. MAX3483/MAX3485/MAX3486 Pin Configuration and Typical Operating Circuit

Figure 2. MAX3488/MAX3490 Pin Configuration and Typical Operating Circuit

Figure 3. MAX3491 Pin Configuration and Typical Operating Circuit

MAX3483

MAX3485

MAX3486

TOP VIEW

NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS REFER TO PINS A AND B WHEN DE IS HIGH.

1

2

3

4

8

5

GND

DI

DE

RE

RO

R

D

Rt

Rt

7

6

D

R

DE

RE

DI

RO

A

B

1

2

3

4

8

7

6

5

B

A

GND

DI

DE

RE

RO

DIP/SO

R

D

B

A

MAX3488

MAX3490

TOP VIEW

1

2

3

4

RO

DI

GND

8

7

6

5

A

B

Z

Y

DIP/SO

R

D

Rt

Rt

5

6

7

8

RO

DI

GND

4

GND

DI

RO

3

2

A

B

Y

Z

D

R

R

D

1

MAX3491

DIP/SO

TOP VIEW

Rt

Rt

DE

RE GND

GND DE

RO

DI

9

10

12

11

B

A

Z

Y

5

RO

N.C.

DI

2

1, 8

3

6, 7

13, 14

4

1

2

3

4

5

6

7

14

13

12

11

10

9

8

N.C.

A

B

Z

Y

N.C.

RO

RE

DE

DI

GND

GND

R

D

D

R

D

R

MAX3483/MAX3485/

MAX3486/MAX3488/

MAX3490/MAX3491

3.3V-Powered, 10Mbps and Slew-Rate-Limited

True RS-485/RS-422 Transceivers

www.maximintegrated.com

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