3 .3 V-P o w e re d , 1 0 Mb p s a n d S le w -Ra t e -Lim it e d
Tru e RS -4 8 5 /RS -4 2 2 Tra n s c e ive rs
A
Y
120Ω
120Ω
RO
RE
R
D
DI
B
Z
Z
B
DE
DE
RE
RO
120Ω
120Ω
DI
R
D
Y
A
Y
Z
B
A
Y
Z
B
A
R
R
D
DI
D
DI
MAX3488
MAX3490
MAX3491
DE RE RO
DE RE RO
NOTE: RE AND DE ON MAX3491 ONLY.
Figure 22. MAX3488/MAX3490/MAX3491 Full-Duplex RS-485 Network
MAX3488
MAX3490
MAX3491
A
120Ω
120Ω
RO
RE
R
DATA IN
B
DE
Z
DI
DATA OUT
D
Y
NOTE: RE AND DE ON MAX3491 ONLY.
Figure 23. Line Repeater for MAX3488/MAX3490/MAX3491
5680/MAX3491
14 ______________________________________________________________________________________