Datasheet

Data Sheet ADM2682E/ADM2687E
Rev. C | Page 21 of 24
NOTES
1. R
T
IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE.
2
. ISOLATION NOT SHOWN.
ABZYABZY
A
B
Z
Y
A
B
Z
Y
R
D
R
D
R
D
R
D
ADM2682E/
ADM2687E
ADM2682E/
ADM2687E
ADM2582E/
ADM2587E
RxD RE DE TxDRxD RE DE TxD
R
T
R
T
RxD
RE
DE
TxD
RxD
RE
DE
TxD
ADM2682E/
ADM2687E
MAXIMUM NUMBER OF TRANSCEIVERS ON BUS = 256
09927-027
Figure 46. ADM2682E/ADM2687E Typical Half Duplex RS-485 Network
NOTES
1. R
T
IS EQUAL TO THE CHARACTERISTIC IMPEDANCE OF THE CABLE.
2. ISOLATION NOT SHOWN.
R
D
A
B
Z
Y
R
D
A B Z Y
R
D
A
B
Z
Y
R
D
A B Z Y
R
T
TxD
DE
RxD
RE
ADM2682E/
ADM2687E
ADM2682E/
ADM2687E
ADM2682E/
ADM2687E
SLAVE
RxD
RE
DE
TxD
ADM2682E/
ADM2687E
MASTER
SLAVESLAVE
RxD RE DE TxD
RxD RE DE TxD
R
T
MAXIMUM NUMBER OF NODES = 256
09927-028
Figure 47. ADM2682E/ADM2687E Typical Full Duplex RS-485 Network
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