Datasheet

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APPLICATION INFORMATION
PCA9544A
SD1
SDA
Channel 0
Channel 1
Channel 2
Channel 3
See Note A
I
2
C/SMBus
Master
SCL
INT
INT1
SC1
SD2
SC2
SD3
SC3
INT2
INT3
SD0
INT0
SC0
V
CC
= 2.7 V to 5.5 V
V
CC
= 3.3 V
V
CC
= 2.7 V to 5.5 V
V
CC
= 2.7 V to 5.5 V
V
CC
= 2.7 V to 5.5 V
V
CC
= 2.7 V to 5.5 V
See Note A
See Note A
See Note A
NOTES: A. If the device generating the interrupt has an open-drain output structure or can be 3-stated, a pullup resistor is required.
If the device generating the interrupt has a totem-pole output structure and cannot be 3-stated, a pullup resistor is not required.
The interrupt inputs should not be left floating.
B. Pin numbers shown are for DGV, DW, PW, and RGY packages.
SDA
SCL
GND
A0
A1
A2
5
6
4
8
9
7
12
13
11
15
16
14
19
18
17
2
3
1
10
20
PCA9544A
4-CHANNEL I
2
C AND SMBus MULTIPLEXER
WITH INTERRUPT LOGIC
SCPS146D – OCTOBER 2005 – REVISED FEBRUARY 2008
Figure 12. Typical Application
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