PCA9539 Ver la hoja de datos (PDF) - NXP Semiconductors.
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PCA9539 Datasheet PDF : 31 Pages
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NXP Semiconductors
PCA9539; PCA9539R
16-bit I2C-bus and SMBus low power I/O port with interrupt and reset
5.2 Pin description
Table 3.
Symbol
INT
A1
RESET
Pin description
Pin
SO24, TSSOP24
1
2
3
IO0_0
4
IO0_1
5
IO0_2
6
IO0_3
7
IO0_4
8
IO0_5
9
IO0_6
10
IO0_7
11
VSS
12
IO1_0
13
IO1_1
14
IO1_2
15
IO1_3
16
IO1_4
17
IO1_5
18
IO1_6
19
IO1_7
20
A0
21
SCL
22
SDA
23
VDD
24
HVQFN24
22
23
24
1
2
3
4
5
6
7
8
9[1]
10
11
12
13
14
15
16
17
18
19
20
21
Description
interrupt output (open-drain)
address input 1
active LOW reset input. Driving this pin LOW
causes:
• PCA9539 to reset its state machine and
registers
• PCA9539R to reset its state machine, but
has no effect on its registers
port 0 input/output 0
port 0 input/output 1
port 0 input/output 2
port 0 input/output 3
port 0 input/output 4
port 0 input/output 5
port 0 input/output 6
port 0 input/output 7
supply ground
port 1 input/output 0
port 1 input/output 1
port 1 input/output 2
port 1 input/output 3
port 1 input/output 4
port 1 input/output 5
port 1 input/output 6
port 1 input/output 7
address input 0
serial clock line input
serial data line open-drain input/output
supply voltage
[1] HVQFN24 package die supply ground is connected to both VSS pin and exposed center pad. VSS pin must
be connected to supply ground for proper device operation. For enhanced thermal, electrical, and board
level performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad
on the board and for proper heat conduction through the board, thermal vias need to be incorporated in the
PCB in the thermal pad region.
PCA9539_PCA9539R_5
Product data sheet
Rev. 05 — 28 July 2008
© NXP B.V. 2008. All rights reserved.
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