ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 Data Sheet
Rev. E | Page 8 of 20
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
RO
1
RE
2
DE
3
DI
4
V
CC
8
B
7
A
6
GND
5
ADM3483/
ADM3485
TOP VIEW
(Not to Scale)
05524-028
Figure 4. ADM3483/ADM3485 Pin Configuration
V
CC
1
RO
2
DI
3
ND
4
A
8
B
7
Z
6
Y
5
ADM3488/
ADM3490
TOP VIEW
(Not to Scale)
05524-029
Figure 5. ADM3488/ADM3490 Pin Configuration
NC
1
RO
2
RE
3
DE
4
V
CC
14
V
CC
13
A
12
B
11
DI
5
Z
10
GND
6
Y
9
GND
7
NC
8
NC = NO CONNECT
ADM3491
TOP VIEW
(Not to Scale)
05524-030
Figure 6. ADM3491 Pin Configuration
Table 7. Pin Function Descriptions
ADM3483/
ADM3485 Pin No.
ADM3488/
ADM3490 Pin No.
ADM3491
Pin No. Mnemonic Description
1 2 2 RO
Receiver Output. When enabled, if A > B by 200 mV, then RO =
high. If A < B by 200 mV, then RO = low.
2 Not applicable 3
RE
Receiver Output Enable. A low level enables the receiver output,
RO. A high level places it in a high impedance state. If RE
is high
and DE is low, the device enters a low power shutdown mode.
3 Not applicable 4 DE
Driver Output Enable. A high level enables the driver differential
Output A and Output B. A low level places it in a high impedance
state. If RE
is high and DE is low, the device enters a low power
shutdown mode.
4 3 5 DI
Driver Input. With a half-duplex part when the driver is enabled, a
logic low on DI forces A low and B high while a logic high on DI
forces A high and B low. With a full-duplex part when the driver is
enabled, a logic low on DI forces Y low and Z high while a logic
high on DI forces Y high and Z low.
5 4 6, 7 GND Ground.
Not applicable 5 9 Y Noninverting Driver Output.
Not applicable 6 10 Z Inverting Driver Output.
6 Not applicable Not applicable A Noninverting Receiver Input A and Noninverting Driver Output A.
Not applicable 8 12 A Noninverting Receiver Input A.
7 Not applicable Not applicable B Inverting Receiver Input B and Inverted Driver Output B.
Not applicable 7 11 B Inverting Receiver Input B.
8 1 13, 14 V
CC
Power Supply (3.3 V ± 0.3 V).
Not applicable Not applicable 1, 8 NC No Connect.
