PCF8574AT/3,512 NXP Semiconductors, PCF8574AT/3,512 Datasheet - Page 11
PCF8574AT/3,512
Manufacturer Part Number
PCF8574AT/3,512
Description
IC I/O EXPANDER I2C 8B 16SOIC
Manufacturer
NXP Semiconductors
Datasheet
1.PCF8574ATS3118.pdf
(24 pages)
Specifications of PCF8574AT/3,512
Package / Case
16-SOIC (0.300", 7.5mm Width)
Interface
I²C
Number Of I /o
8
Interrupt Output
Yes
Frequency - Clock
100KHz
Voltage - Supply
2.5 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Includes
POR
Logic Family
PCF
Number Of Lines (input / Output)
9
Operating Supply Voltage
2.5 V to 6 V
Power Dissipation
400 mW
Operating Temperature Range
- 40 C to + 85 C
Maximum Clock Frequency
100 KHz
Mounting Style
SMD/SMT
Number Of Output Lines
9
Output Current
25 mA
Output Voltage
2.4 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
568-3615 - DEMO BOARD I2C
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
568-3987-5
935275581512
PCF8574ATD
PCF8574ATD
935275581512
PCF8574ATD
PCF8574ATD
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A LOW-to-HIGH transition of SDA, while SCL is HIGH is defined as the stop condition (P). Transfer of data can be stopped at any moment by a stop condition. When this occurs, data present
at the last acknowledge phase is valid (output mode). Input data is lost.
READ FROM
DATA INTO
PORT
PORT
INT
SDA
start condition
t iv
S
0
slave address (PCF8574)
1
0
0
A2
A1
A0
t ph
R/W
1
Fig.12 READ mode (input).
A
acknowledge
from slave
DATA 2
t ir
data from port
DATA 1
DATA 3
t ps
A
acknowledge
from slave
t ir
data from port
DATA 4
DATA 4
1
condition
MBD975
stop
P