Datasheet

22
I/O
Port
P17-P10
Shift
Register
16 Bits
Interrupt
Logic
LP Filter
Input
Filter
23
Power-On
Reset
Read Pulse
Write Pulse
TCA9539
2
21
1
12
GND
24
V
CC
3
RESET
SDA
SCL
A1
A0
INT
I
2
C Bus
Control
P07-P00
TCA9539
SCPS202A – AUGUST 2009 – REVISED SEPTEMBER 2009 ........................................................................................................................................... www.ti.com
LOGIC DIAGRAM (POSITIVE LOGIC)
A. Pin numbers shown are for PW package.
B. All I/Os are set to inputs at reset.
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