Datasheet

14
I/O
Port
Shift
Register
8 Bits
LP Filter
Interrupt
Logic
Input
Filter
15
Power-On
Reset
Read Pulse
Write Pulse
2
1
13
16
8
GND
V
CC
SDA
SCL
A1
A0
INT
I
2
C Bus
Control
P7−P0
RESET
3
PCA9538
www.ti.com ................................................................................................................................................ SCPS126E – SEPTEMBER 2006 – REVISED JUNE 2008
FUNCTIONAL BLOCK DIAGRAM
A. Pin numbers shown are for the DB, DBQ, DGV, DW, or PW package.
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