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PCF8574P Datasheet(PDF) 5 Page - NXP Semiconductors

Part # PCF8574P
Description  Remote 8-bit I/O expander for I2C-bus
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF8574P Datasheet(HTML) 5 Page - NXP Semiconductors

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1997 Apr 02
5
Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I2C-bus
PCF8574
5
PINNING
SYMBOL
PIN
DESCRIPTION
DIP16; SO16
SSOP20
A0
1
6
address input 0
A1
2
7
address input 1
A2
3
9
address input 2
P0
4
10
quasi-bidirectional I/O 0
P1
5
11
quasi-bidirectional I/O 1
P2
6
12
quasi-bidirectional I/O 2
P3
7
14
quasi-bidirectional I/O 3
VSS
8
15
supply ground
P4
9
16
quasi-bidirectional I/O 4
P5
10
17
quasi-bidirectional I/O 5
P6
11
19
quasi-bidirectional I/O 6
P7
12
20
quasi-bidirectional I/O 7
INT
13
1
interrupt output (active LOW)
SCL
14
2
serial clock line
SDA
15
4
serial data line
VDD
16
5
supply voltage
n.c.
−
3
not connected
n.c.
−
8
not connected
n.c.
−
13
not connected
n.c.
−
18
not connected
handbook, halfpage
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
INT
A0
A1
A2
P0
P1
P2
P3
SDA
VSS
SCL
P7
P6
P5
P4
VDD
PCF8574
PCF8574A
MBD979
Fig.2 Pin configuration (DIP16; SO16).
handbook, halfpage
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
INT
SCL
n.c.
SDA
VDD
A0
A1
n.c.
A2
P0
P7
P6
n.c.
P5
VSS
P4
P3
n.c.
P2
P1
PCF8574TS
MBD978
Fig.3 Pin configuration (SSOP20).


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