3.3V-Powered, ±15kV ESD-Protected, 12Mbps and

Slew-Rate-Limited True RS-485/RS-422 Transceivers

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15

120

Ω

120

Ω

R

D

RO

RE

DE

DI

A

B

Y

120

Ω

120

Ω

DI

DI

DI

RO

RO

RO

DE

DE

DE

RE

RE

RE

Z

Z

Z

Z

Y

Y

Y

AA

A

BB

B

D

D

D

R

R

R

MAX3488E

MAX3490E

MAX3491E

NOTE: RE AND DE ON MAX3491E ONLY.

Figure 25. MAX3488E/MAX3490E/MAX3491E Full-Duplex RS-485 Network

DI

RO

DE

RE

A

B

RE

RE

RE

RO

RO

RO

DI

DI

DI

DE

DE

DE

D

D

D

R

R

R

B

B

B

A

A

A

120

Ω

120

Ω

D

R

MAX3483E

MAX3485E

MAX3486E

Figure 24. MAX3483E/MAX3485E/MAX3486E Typical RS-485 Network