PCF8574TDK NXP Semiconductors, PCF8574TDK Datasheet - Page 4

• 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
4
2002 Nov 22
handbook, full pagewidth
Remote 8-bit I/O expander for I
BLOCK DIAGRAM
V DD
V SS
SDA
SCL
INT
A0
A1
A2
Fig.1 Block diagram (pin numbers apply to DIP16 and SO16 packages).
13
1
2
3
14
15
16
8
FILTER
INPUT
POWER-ON
RESET
INTERRUPT
LOGIC
CONTROL
I C BUS
2
2
C-bus
PCF8574
4
REGISTER
SHIFT
WRITE pulse
READ pulse
LP FILTER
8 BIT
PORT
I/O
MBD980
10
11
12
4
5
6
7
9
Product specification
P0
P1
P2
P3
P4
P5
P6
P7
PCF8574