pca9539 datasheet

PCA9539
SCPS130G –AUGUST 2005–REVISED JUNE 2014 www.ti.com
Pin Functions
PIN
NO.
SOIC (DW),
DESCRIPTION
SSOP (DB),
NAME
QSOP (DBQ), QFN (RGE)
TSSOP (PW), AND
TVSOP (DGV)
INT 1 22 Interrupt output. Connect to V
CC
through a pullup resistor.
A1 2 23 Address input. Connect directly to V
CC
or ground.
Active-low reset input. Connect to V
CC
through a pullup resistor if no active
RESET 3 24
connection is used.
P00 4 1 P-port input/output. Push-pull design structure.
P01 5 2 P-port input/output. Push-pull design structure.
P02 6 3 P-port input/output. Push-pull design structure.
P03 7 4 P-port input/output. Push-pull design structure.
P04 8 5 P-port input/output. Push-pull design structure.
P05 9 6 P-port input/output. Push-pull design structure.
P06 10 7 P-port input/output. Push-pull design structure.
P07 11 8 P-port input/output. Push-pull design structure.
GND 12 9 Ground
P10 13 10 P-port input/output. Push-pull design structure.
P11 14 11 P-port input/output. Push-pull design structure.
P12 15 12 P-port input/output. Push-pull design structure.
P13 16 13 P-port input/output. Push-pull design structure.
P14 17 14 P-port input/output. Push-pull design structure.
P15 18 15 P-port input/output. Push-pull design structure.
P16 19 16 P-port input/output. Push-pull design structure.
P17 20 17 P-port input/output. Push-pull design structure.
A0 21 18 Address input. Connect directly to V
CC
or ground.
SCL 22 19 Serial clock bus. Connect to V
CC
through a pullup resistor.
SDA 23 20 Serial data bus. Connect to V
CC
through a pullup resistor.
V
CC
24 21 Supply voltage
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