ADM3491
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
V
CC 1
NC
2
3
4
5
6
7
8
16
15
NC
A
B
NC
Z
Y
NC
05234-003
NC
1
RO
2
RE
3
DE
4
GND
6
GND
7
14
V
CC
13
V
CC
RO
RE
DE
DI
NC
05234-002
ADM3491
TOP VIEW
(Not to Scale)
14
13
12
11
10
9
ADM3491
12
A
TOP VIEW
11
B
(Not to Scale)
DI
5
10
Z
9
8
Y
NC
GND
NC
NC = NO CONNECT
NC = NO CONNECT
Figure 2. DIP/SOIC Pin Configuration
Figure 3. TSSOP Pin Configuration
Table 5. Pin Function Descriptions
Pin Number
DIP/ SOIC
1, 8
2
3
4
5
6, 7
9
10
11
12
13, 14
TSSOP
2, 7, 9, 10, 13, 16
3
4
5
6
8
11
12
14
15
1
Mnemonic
NC
RO
RE
DE
DI
GND
Y
Z
B
A
V
CC
Description
No Connect.
Receiver Output. High when A > B by 200 mV; low when A < B by 200 mV.
Receiver Output Enable. When RE is low, the receiver output RO is enabled. When RE is high, the
output is high impedance. If RE is high and DE is low, the ADM3491 enters a shutdown state.
Driver Output Enable. A high level enables the driver differential outputs, Y and Z. A low level
places the part in a high impedance state.
Driver Input. When the driver is enabled, a logic low on DI forces Y low and Z high; a logic high
on DI forces Y high and Z low.
Ground Connection, 0 V.
Noninverting Driver Output Y.
Inverting Driver Output Z.
Inverting Receiver Input B.
Noninverting Receiver Input A.
Power Supply, 3.3 V ± 0.3 V.
Rev. A | Page 6 of 16
ROCHESTER [ Rochester Electronics ]
