PCF8574TD NXP Semiconductors, PCF8574TD Datasheet - Page 10

• Manufacturer Part Number: PCF8574TD
• Description: I/O Expander 16-Pin SO Tube
• Manufacturer: NXP Semiconductors

Specifications of PCF8574TD

• Package: 16SO
• Operating Temperature: -40 to 85 °C
• Chip Configuration: 8 Bit
• Bus Frequency: 100kHz
• Ic Interface Type: I2C
• No. Of I/o's: 8
• Supply Voltage Range: 2.5V To 6V
• Digital Ic Case Style: SOIC
• No. Of Pins: 16
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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FROM PORT
DATA OUT
WRITE TO
PORT
SCL
SDA
start condition
S
1
0
slave address (PCF8574)
2
1
0
3
4
0
A2
5
A1
6
A0
7
R/W
8
0
A
acknowledge
from slave
Fig.11 WRITE mode (output).
data to port
DATA 1
t pv
A
acknowledge
from slave
data to port
DATA 1 VALID
DATA 2
t pv
A
acknowledge
from slave
DATA 2 VALID
MBD974