Data Sheet ADuM1233
Rev. C | Page 7 of 12
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
06271-002
V
IA
1
V
IB
2
V
DD1
3
GND
1
4
V
DDA
16
V
OA
15
GND
A
14
NC
13
DISABLE
5
NC
12
NC
6
V
DDB
11
NC
7
V
OB
10
V
DD1
8
GND
B
9
NC = NO CONNECT
ADuM1233
TOP VIEW
(Not to Scale)
Figure 3. Pin Configuration
Table 8. Pin Function Descriptions
Pin No. Mnemonic Description
1 V
IA
Logic Input A.
2 V
IB
Logic Input B.
3, 8
1
V
DD1
Input Supply Voltage, 4.5 V to 5.5 V.
4 GND
1
Ground Reference for Input Logic Signals.
5 DISABLE Input Disable. Disables the isolator inputs and refresh circuits. Outputs take on default low state.
6, 7, 12, 13
2
NC No Connect.
9 GND
B
Ground Reference for Output B.
OB
11 V
DDB
Output B Supply Voltage, 12 V to 18 V.
14 GND
A
Ground Reference for Output A.
15 V
OA
Output A.
16 V
DDA
Output A Supply Voltage, 12 V to 18 V.
1
Pin 3 and Pin 8 are internally connected. Connecting both pins to V
DD1
is recommended.
2
Pin 12 and Pin 13 are floating and should be left unconnected.
Table 9. Truth Table (Positive Logic)
V
IA
/V
IB
Input V
DD1
State DISABLE V
OA
/V
OB
Output Notes
High Powered Low High
Low Powered Low Low
X
1
Unpowered X
1
Low Output returns to input state within 1 µs of V
DD1
power restoration.
X
1
Powered High Low
1
X is don’t care.