參數(shù)資料
型號： PCA9540
廠商： NXP Semiconductors N.V.
英文描述： 2-channel I2C multiplexer
中文描述： 2通道的I2C多路復(fù)用器
文件頁數(shù)： 2/10頁
文件大小： 110K
代理商： PCA9540
Philips Semiconductors
Product specification
PCA9540
2-channel I
2
C multiplexer
2
1999 Dec 15
853–2185 22852
FEATURES
1-of-2 bi-directional translating multiplexer
Channel selection via I
2
C bus
Operating supply voltage 2.5 to 3.6 V
Operating temperature range 0
°
C to 70
°
C
Power-up with all multiplexer channels deselected
Low on resistance
DESCRIPTION
The PCA9540 is a 1-of-2 bi-directional translating multiplexer,
controlled via the I
2
C bus. The SCL/SDA upstream pair fans out to
two SCx/SDx downstream pairs, or channels. Only one SCx/SDx
channel is selected at a time, determined by the contents of the
programmable control register.
The pass gates of the multiplexer are constructed such that the V
DD
pin can be used to limit the maximum high voltage which will be
passed by the PCA9540. This allows the use of different bus
voltages on each SCx/SDx pair, so that 3.3 V parts can
communicate with 5 V parts without any additional protection.
External pull-up resistors can pull the bus up to the desired voltage
level for this channel.
PIN CONFIGURATION
1
2
3
4
5
6
7
8
SCL
SDA
V
DD
SD0
SC1
SD1
SC0
V
SS
SW00491
PIN DESCRIPTION
PIN
NUMBER
1
SYMBOL
FUNCTION
SCL
Serial clock line
2
SDA
Serial data line
3
V
DD
SD0
Supply voltage
4
Serial data 0
5
SC0
Serial clock 0
6
V
SS
SD1
Supply ground
7
Serial data 1
8
SC1
Serial clock 1
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
0
°
C to +70
°
C
0
°
C to +70
°
C
ORDER CODE
DRAWING NUMBER
8-Pin Plastic SO
PCA9540D
SOT96-1
8-Pin Plastic TSSOP
PCA9540PW DH
SOT505-1
相關(guān)PDF資料
PDF描述
PCA9540D 2-channel I2C multiplexer
PCA9541 2-to-1 I2C master selector with interrupt logic and reset
PCA9542 2-channel IIC multiplexer and interrupt controller(2通道IIC多路復(fù)用器和中斷控制器)
PCA9542PW 2-channel I2C multiplexer and interrupt controller
PCA9542PWDH 2-channel I2C multiplexer and interrupt controller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9540B 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-channel I2C-bus multiplexer
PCA9540BD 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 I2C MUX 2CH BI-DIR 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
PCA9540BD,112 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 I2C MUX 2CH BI-DIR 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
PCA9540BD,118 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 2-CHANNEL I2C MULTIPLEXER 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
PCA9540BD112 制造商:NXP Semiconductors 功能描述:IC 2CH I2C BUS MULTIPLEXER 5.5V SOIC-8
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