Datasheet

ADuM7234 Data Sheet
Rev. B | Page 6 of 12
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Figure 2. Pin Configuration
Table 7. Pin Function Descriptions
Pin No. Mnemonic Description
1, 8, 12, 13
NC
No Connect. Pin 12 and Pin 13 are floating and should be left unconnected.
2 V
IA
Logic Input A.
3 V
IB
Logic Input B.
4, 7 V
DD1
Input Supply Voltage, 4.5 V to 5.5 V. Pin 4 and Pin 7 are internally connected. Connecting both pins to V
DD1
is recommended.
5 GND
1
Ground Reference for Input Logic Signals.
6 DISABLE Input Disable. Disables the isolator inputs and refresh circuits. Outputs take on the default low state.
9 GND
B
Ground Reference for Output B.
10 V
OB
Output B.
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.
Table 8. 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 the input state within 1 µs of V
DD1
power restoration
X
1
Powered High Low
1
X is don’t care.