pca8574 NXP Semiconductors, pca8574 Datasheet - Page 4

• 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
6.2 Pin description
Table 2.
Symbol
AD0
AD1
AD2
P0
P1
P2
P3
V
P4
P5
P6
P7
INT
SCL
SDA
V
Fig 5. Pin configuration for TSSOP16
SS
DD
AD0
AD1
AD2
V
P0
P1
P2
P3
SS
1
2
3
4
5
6
7
8
Pin description for DIP16, SO16, TSSOP16
PCA8574APW
PCA8574PW
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Rev. 02 — 14 May 2007
002aac941
Description
address input 0
address input 1
address input 2
quasi-bidirectional I/O 0
quasi-bidirectional I/O 1
quasi-bidirectional I/O 2
quasi-bidirectional I/O 3
supply ground
quasi-bidirectional I/O 4
quasi-bidirectional I/O 5
quasi-bidirectional I/O 6
quasi-bidirectional I/O 7
interrupt output (active LOW)
serial clock line
serial data line
supply voltage
16
15
14
13
12
11
10
9
Remote 8-bit I/O expander for I
V
SDA
SCL
INT
P7
P6
P5
P4
DD
Fig 6. Pin configuration for SSOP20
SDA
SCL
AD0
AD1
AD2
V
INT
n.c.
n.c.
DD
P0
10
1
2
3
4
5
6
7
8
9
PCA8574/74A
PCA8574ATS
PCA8574TS
2
C-bus with interrupt
002aac680
© NXP B.V. 2007. All rights reserved.
20
19
18
17
16
15
14
13
12
11
P7
P6
n.c.
P5
P4
V
P3
n.c.
P2
P1
SS
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