SI8431BB-C-IS Datasheet, PDF (26/38 Pages) Silicon Laboratories – LOW-POWER TRIPLE-CHANNEL DIGITAL ISOLATOR

Si8430/31/35
4. Pin Descriptions
VDD1
GND1
A1
A2
A3
NC
NC
GND1
I
RF
s
RF
XMITR
RCVR
o
RF
XMITR
l
RF
RCVR
a
RF
XMITR
t
RF
RCVR
i
o
n
Si8430/35
VDD2
GND2
B1
B2
B3
NC
EN2/NC
GND2
VDD1
GND1
A1
A2
A3
NC
EN1
GND1
I
RF
XMITR
s
RF
RCVR
o
RF
XMITR
l
RF
RCVR
a
RF
RCVR
t
RF
XMITR
i
o
n
Si8431
VDD2
GND2
B1
B2
B3
NC
EN2
GND2
Name
SOIC-16 Pin#
Type
Description¹
V_DD1
GND1
1
Supply
Side 1 power supply.
2
Ground
Side 1 ground.
A1
3
Digital Input Side 1 digital input.
A2
4
Digital Input Side 1 digital input.
A3
5
Digital I/O Side 1 digital input or output.
NC
EN1/NC²
6
NA
No Connect.
7
Digital Input Side 1 active high enable. NC on Si8430/35
GND1
8
Ground
Side 1 ground.
GND2
EN2/NC²
9
Ground
Side 2 ground.
10
Digital Input Side 2 active high enable. NC on Si8435.
NC
11
NA
No Connect.
B3
12
Digital I/O Side 2 digital input or output.
B2
13
Digital Output Side 2 digital output.
B1
14
Digital Output Side 2 digital output.
GND2
15
Ground
Side 2 ground.
V_DD2
16
Supply
Side 2 power supply.
Notes:
1. For narrow-body devices, Pin 2 and Pin 8 GND must be externally connected to respective ground. Pin 9 and Pin 15
must also be connected to external ground.
2. No Connect. These pins are not internally connected. They can be left floating, tied to VDD or tied to GND.
26
Rev. 1.5