SI8641BD-B-IS Datasheet, PDF (27/44 Pages) STMicroelectronics – LOW-POWER QUAD-CHANNEL DIGITAL ISOLATOR

4. Pin Descriptions
Si8640/41/42/45
VDD1
GND1
A1
A2
A3
A4
NC
GND1
I
RF
XMITR
s
RF
RCVR
o
RF
XMITR
l
RF
RCVR
a
RF
XMITR
t
RF
RCVR
i
RF
XMITR
o
RF
RCVR
n
Si8640/45
VDD2
VDD1
GND2
GND1
B1
A1
B2
A2
B3
A3
B4
A4
EN2/NC
EN1
GND2
GND1
I
RF
XMITR
s
RF
RCVR
o
RF
XMITR
l
RF
RCVR
a
RF
XMITR
t
RF
RCVR
i
RF
RCVR
o
RF
XMITR
n
Si8641
VDD2
GND2
B1
B2
B3
B4
EN2
GND2
VDD1
GND1
A1
A2
A3
A4
EN1
GND1
I
RF
XMITR
s
RF
RCVR
o
RF
XMITR
l
RF
RCVR
a
RF
RCVR
t
RRFF
XRMCIVTRR
i
RF
RCVR
o RF
XMITR
n
Si8642
VDD2
GND2
B1
B2
B3
B4
EN2
GND2
Name
SOIC-16 Pin#
Type
Description
V_DD1
GND1
1
Supply
Side 1 power supply.
2¹
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.
A4
EN1/NC²
GND1
GND2
EN2/NC²
6
Digital I/O Side 1 digital input or output.
7
Digital Input Side 1 active high enable. NC on Si8640/45.
8¹
Ground
Side 1 ground.
9¹
Ground
Side 2 ground.
10
Digital Input Side 2 active high enable. NC on Si8645.
B4
11
Digital I/O Side 2 digital input or output.
B3
12
Digital I/O Side 2 digital input or output.
B2
13
Digital Output Side 2 digital output.
B1
GND2
14
Digital Output Side 2 digital output.
15¹
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 V_DD or tied to GND.
Rev. 1.6
27