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參數(shù)資料
| 型號(hào)： | PCA9542 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 2-channel IIC multiplexer and interrupt controller(2通道IIC多路復(fù)用器和中斷控制器) |
| 中文描述： | 2通道復(fù)用器和國際進(jìn)口中斷控制器（2通道進(jìn)口證多路復(fù)用器和中斷控制器） |
| 文件頁數(shù)： | 5/10頁 |
| 文件大小： | 74K |
| 代理商： | PCA9542 |
Philips Semiconductors
Product specification
PCA9542
2-channel I
2
C multiplexer and interrupt controller
1999 Oct 07
5
CHARACTERISTICS OF THE I
2
C-BUS
The I
2
C-bus is for 2-way, 2-line communication between different ICs
or modules. The two lines are a serial data line (SDA) and a serial
clock line (SCL). Both lines must be connected to a positive supply
via a pull-up resistor when connected to the output stages of a device.
Data transfer may be initiated only when the bus is not busy.
Bit transfer
One data bit is transferred during each clock pulse. The data on the
SDA line must remain stable during the HIGH period of the clock
pulse as changes in the data line at this time will be interpreted as
control signals (see FIgure 1).
SDA
SCL
SW00363
data line
stable;
data valid
change
of data
allowed
Figure 1. Bit transfer
Start and stop conditions
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 Figure 2).
System configuration
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 Figure 3).
SDA
SCL
SW00365
S
P
SDA
SCL
START condition
STOP condition
Figure 2. Definition of start and stop conditions
MASTER
TRANSMITTER/
RECEIVER
SLAVE
RECEIVER
SLAVE
TRANSMITTER/
RECEIVER
MASTER
TRANSMITTER
MASTER
TRANSMITTER/
RECEIVER
SDA
SCL
SW00366
I
2
C
MULTIPLEXER
SLAVE
Figure 3. System configuration
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| PCA9543D | 2-channel I2C switch with interrupt logic and reset |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9542A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-channel I2C-bus multiplexer and interrupt logic |
| PCA9542AD | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-CH I2C MUX W/INTERRUPT RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| PCA9542AD,112 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-CH I2C MUX RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| PCA9542AD,118 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 I2C MUX 2CH RoHS:否 制造商:Micrel 產(chǎn)品:Multiplexers 邏輯系列:CMOS 位數(shù): 線路數(shù)量（輸入/輸出）:2 / 12 傳播延遲時(shí)間:350 ps, 400 ps 電源電壓-最大:2.625 V, 3.6 V 電源電壓-最小:2.375 V, 3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-44 封裝:Tray |
| PCA9542AD,118-CUT TAPE | 制造商:NXP 功能描述:PCA9542A Series 2-Channel I2C-bus Multiplexer and Interrupt Logic - SOIC - 14 |
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