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ADM3491 Datasheet(PDF) 10 Page - Analog Devices

Part # ADM3491
Description  3.3 V, Full Duplex, 840 uA 20 Mbps, EIA RS-485 Transceiver
PDF  12 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADM3491 Datasheet(HTML) 10 Page - Analog Devices

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ADM3491
–10–
REV. 0
Table I. Transmitting Truth Table
Transmitting
Inputs
Outputs
RE
DE
DI
Z
Y
X1
1
0
1
X1
0
1
0
0
0
X
Hi-Z
Hi-Z
1
0
X
Hi-Z
Hi-Z
Table II. Receiving Truth Table
Receiving
Inputs
Outputs
RE
DE
A–B
RO
0
X
> +0.2 V
1
0
X
< –0.2 V
0
0
X
Inputs O/C
1
1
X
X
Hi-Z
RE
VCC
RO
R
A
B
Z
Y
GND
DE
DI
ADM3491
RS-485/RS-422 LINK
ADM3491
GND
RE
RO
DI
DE
VCC
Y
Z
A
+3.3V
0.1 F
0.1 F
+3.3V
B
D
D
R
Figure 23. ADM3491 Full-Duplex Data Link



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