PCA9574PW,112 NXP Semiconductors, PCA9574PW,112 Datasheet - Page 14

• Manufacturer Part Number: PCA9574PW,112
• Description: IC I/O EXPANDER I2C 8B 16TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9574PW,112

• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 1.1 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Includes: POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935285149112; PCA9574PW; PCA9574PW

NXP Semiconductors
PCA9574_2
Product data sheet
Fig 10. System configuration
SDA
SCL
TRANSMITTER/
8.1.1 START and STOP conditions
RECEIVER
MASTER
8.2 System configuration
Both data and clock lines remain HIGH when the bus is not busy. A HIGH-to-LOW
transition of the data line while the clock is HIGH is defined as the START condition (S). A
LOW-to-HIGH transition of the data line while the clock is HIGH is defined as the STOP
condition (P) (see
A device generating a message is a ‘transmitter’; a device receiving is the ‘receiver’. The
device that controls the message is the ‘master’ and the devices which are controlled by
the master are the ‘slaves’ (see
Fig 9.
RECEIVER
SDA
SCL
Definition of START and STOP conditions
SLAVE
START condition
Figure
TRANSMITTER/
S
Rev. 02 — 27 July 2009
RECEIVER
8-bit I
9).
SLAVE
2
C-bus and SMBus, level translating, low voltage GPIO
Figure
TRANSMITTER
10).
MASTER
TRANSMITTER/
RECEIVER
MASTER
SLAVE
STOP condition
MULTIPLEXER
PCA9574
P
© NXP B.V. 2009. All rights reserved.
I
2
C-BUS
002aaa966
mba608
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