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PCF8574 Datasheet(PDF) 5 Page - NXP Semiconductors

Part # PCF8574
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

PCF8574 Datasheet(HTML) 5 Page - NXP Semiconductors

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2002 Nov 22
5
Philips Semiconductors
Product specification
Remote 8-bit I/O expander for I2C-bus
PCF8574
5
PINNING
5.1
DIP16 and SO16 packages
SYMBOL
PIN
DESCRIPTION
A0
1
address input 0
A1
2
address input 1
A2
3
address input 2
P0
4
quasi-bidirectional I/O 0
P1
5
quasi-bidirectional I/O 1
P2
6
quasi-bidirectional I/O 2
P3
7
quasi-bidirectional I/O 3
VSS
8
supply ground
P4
9
quasi-bidirectional I/O 4
P5
10
quasi-bidirectional I/O 5
P6
11
quasi-bidirectional I/O 6
P7
12
quasi-bidirectional I/O 7
INT
13
interrupt output (active LOW)
SCL
14
serial clock line
SDA
15
serial data line
VDD
16
supply voltage
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
PCF8574P
PCF8574AP
MBD979
Fig.2 Pin configuration (DIP16).
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
PCF8574T
PCF8574AT
MCE001
Fig.3 Pin configuration (SO16).


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