PCF8574TDK NXP Semiconductors, PCF8574TDK Datasheet - Page 6

• Manufacturer Part Number: PCF8574TDK
• Description: I/O Expander 20-Pin SSOP Tube
• Manufacturer: NXP Semiconductors

Specifications of PCF8574TDK

• Package: 20SSOP
• Operating Temperature: -40 to 85 °C

Philips Semiconductors
5.2
2002 Nov 22
handbook, halfpage
INT
SCL
n.c.
SDA
V
A0
A1
n.c.
A2
P0
P1
P2
n.c.
P3
V
P4
P5
n.c.
P6
P7
DD
SS
Remote 8-bit I/O expander for I
SYMBOL
SSOP20 package
Fig.4 Pin configuration (SSOP20).
SDA
V DD
SCL
INT
n.c.
n.c.
A2
P0
A0
A1
10
1
2
3
4
5
6
7
8
9
PCF8574ATS
PCF8574TS
PIN
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
MBD978
interrupt output (active LOW)
serial clock line
not connected
serial data line
supply ground
quasi-bidirectional I/O 4
quasi-bidirectional I/O 5
not connected
quasi-bidirectional I/O 6
quasi-bidirectional I/O 7
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
19
18
17
16
15
14
13
12
11
20
P7
V SS
P3
P2
P1
P6
n.c.
P5
P4
n.c.
2
C-bus
6
DESCRIPTION
Product specification
PCF8574