Si8440/41/42/45
4. Pin Descriptions
VDD1
VDD1
VDD2
GND2
B1
VDD1
VDD2
GND2
B1
VDD2
GND2
B1
GND1
GND1
GND1
I
s
o
l
I
s
o
l
I
s
o
l
RF
XMITR
RF
RCVR
RF
RCVR
RF
XMITR
RF
RCVR
RF
XMITR
A1
A2
A1
A2
A1
A2
RF
XMITR
RF
RCVR
RF
RCVR
RF
XMITR
RF
RCVR
RF
XMITR
B2
B2
B2
a
t
i
o
n
a
t
i
o
n
a
t
i
o
n
RF
XMITR
RF
RCVR
RF
RCVR
RF
RCVR
RF
RF
RF
XMITR
A3
A4
B3
A3
A4
B3
A3
A4
B3
XMITR
RCVR
RF
XMITR
RF
RCVR
RF
RCVR
RF
XMITR
RF
RCVR
RF
XMITR
B4
B4
B4
EN2/NC
EN2
EN2
NC
EN1
GND1
EN1
GND1
GND2
GND2
GND1
GND2
Si8440/45
Si8441
Si8442
1
Name
SOIC-16 Pin#
Type
Description
V
1
2
Supply
Side 1 power supply.
Side 1 ground.
DD1
GND1
A1
Ground
3
Digital Input
Digital Input
Digital I/O
Digital I/O
Digital Input
Ground
Side 1 digital input.
A2
4
Side 1 digital input.
A3
5
Side 1 digital input or output.
Side 1 digital input or output.
A4
6
2
2
EN1/NC
GND1
GND2
EN2/NC
B4
7
Side 1 active high enable. NC on Si8440/45.
Side 1 ground.
8
9
Ground
Side 2 ground.
10
11
12
13
14
15
16
Digital Input
Digital I/O
Digital I/O
Side 2 active high enable. NC on Si8445.
Side 2 digital input or output.
Side 2 digital input or output.
B3
B2
Digital Output Side 2 digital output.
Digital Output Side 2 digital output.
B1
GND2
Ground
Supply
Side 2 ground.
V
Side 2 power supply.
DD2
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
SILICONIMAGE [ Silicon image ]
