ADuM5401/ADuM5402/ADuM5403/ADuM5404
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
V
1
2
3
4
5
6
7
8
16
V
ISO
DD1
GND
15 GND
1
IA
IB
IC
ISO
V
V
V
14
13
12
11
10
9
V
V
V
V
V
OA
OB
OC
ID
ADuM5401
TOP VIEW
(Not to Scale)
V
OD
NC
GND
SEL
GND
ISO
1
Figure 7. ADuM5401 Pin Configuration
Table 11. ADuM5401 Pin Function Descriptions
Pin No. Mnemonic Description
1
VDD1
Primary Supply Voltage, 3.0 V to 5.5 V.
2, 8
GND1
Ground 1. Ground reference for isolator primary. Pin 2 and Pin 8 are internally connected, and it is recommended that both
pins be connected to a common ground.
3
VIA
Logic Input A.
4
VIB
Logic Input B.
5
VIC
Logic Input C.
6
7
VOD
NC
Logic Output D.
Make no connection to this pin.
9, 15
GNDISO
Ground Reference for Isolator Side 2. Pin 9 and Pin 15 are internally connected, and it is recommended that both pins be
connected to a common ground.
10
VSEL
Output Voltage Selection. When VSEL = VISO, the VISO setpoint is 5.0 V. When VSEL = GNDISO, the VISO setpoint is 3.3 V.
VDD1 and VISO voltages must be in the same operating range to guarantee proper operation of the data channels.
11
12
13
14
16
VID
Logic Input D.
Logic Output C.
Logic Output B.
Logic Output A.
VOC
VOB
VOA
VISO
Secondary Supply Voltage Output for External Loads, 3.3 V (VSEL Low) or 5.0 V (VSEL High). VDD1 and VISO voltages must be
in the same operating range to guarantee proper operation of the data channels.
Rev. 0 | Page 10 of 24
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