pca8574 NXP Semiconductors, pca8574 Datasheet - Page 5

• Manufacturer Part Number: pca8574
• Description: Pca8574/pca8574a Remote 8-bit I/o Expander For I2c-bus With Interrupt
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA8574_PCA8574A_2
Product data sheet
Table 3.
Symbol
INT
SCL
n.c.
SDA
V
AD0
AD1
n.c.
AD2
P0
P1
P2
n.c.
P3
V
P4
P5
n.c.
P6
P7
DD
SS
Pin description for SSOP20
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Rev. 02 — 14 May 2007
Description
interrupt output (active LOW)
serial clock line
not connected
serial data line
supply voltage
address input 0
address input 1
not connected
address input 2
quasi-bidirectional I/O 0
quasi-bidirectional I/O 1
quasi-bidirectional I/O 2
not connected
quasi-bidirectional I/O 3
supply ground
quasi-bidirectional I/O 4
quasi-bidirectional I/O 5
not connected
quasi-bidirectional I/O 6
quasi-bidirectional I/O 7
Remote 8-bit I/O expander for I
PCA8574/74A
2
C-bus with interrupt
© NXP B.V. 2007. All rights reserved.
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