Datasheet

Fail-Safe, High-Speed (10Mbps),
Slew-Rate-Limited RS-485/RS-422 Transceivers
2µs/div
V
A
- V
B
DI
RO
1V/div
5V/div
5V/div
MAX3080/3089 FIG-19
Figure 19. MAX3083/MAX3084/MAX3085, and MAX3089 with
SRL = V
CC,
System Differential Voltage at 50kHz Driving 4000
feet of Cable
1µs/div
V
A
- V
B
DI
RO
1V/div
5V/div
5V/div
MAX3080/3089 FIG-20
Figure 20. MAX3086/MAX3087/MAX3088, and MAX3089 with
SRL = GND, System Differential Voltage at 200kHz Driving
4000 feet of Cable
DI RO DE
RE
A
B/Z*
RE
RERE
RO
RO
RO
DI
DI
DI
DE
DE
DE
D
D
D
R
R
R
B
B
B
A
A
A/Y*
120Ω
120Ω
D
R
MAX3082
MAX3085
MAX3088
*MAX3089 (HALF-DUPLEX)
Figure 21. Typical Half-Duplex RS-485 Network
Maxim Integrated
19
MAX3080–MAX3089