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參數(shù)資料
| 型號： | PCA9544PWDH |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 4-channel I2C multiplexer and interrupt controller |
| 中文描述： | 4 CHANNEL(S), I2C BUS CONTROLLER, PDSO20 |
| 封裝： | 4.40 MM, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 77K |
| 代理商： | PCA9544PWDH |
Philips Semiconductors
Product specification
PCA9544
4-channel I
2
C multiplexer and interrupt controller
2
1999 Oct 07
853–2178 22487
FEATURES
1-of-4 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
3 address pins, allowing up to 8 devices on the I
2
C bus
Low on resistance
DESCRIPTION
The PCA9544 is a 1-of-4 bi-directional translating multiplexer,
controlled via the I
2
C bus. The SCL/SDA upstream pair fans out to
four 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. Four interrupt inputs, one for each of
the SCx/SDx downstream pair, are provided. One interrupt output,
which acts as an AND of the four interrupt inputs, is provided. All I/O
pins are 5 V tolerant.
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 PCA9544. 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
A0
A1
A2
INT0
SD1
V
DD
SDA
SCL
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
SD0
SC0
INT1
INT
SC3
SD3
INT3
SC2
9
12
10
11
SC1
VSS
SD2
INT2
SW00373
PIN DESCRIPTION
PIN
NUMBER
1
SYMBOL
FUNCTION
A0
Address input 0
2
A1
Address input 1
3
A2
Address input 2
4
INT0
Interrupt input 0
5
SD0
Serial data 0
6
SC0
Serial clock 0
7
INT1
Interrupt input 1
8
SD1
Serial data 1
9
SC1
Serial clock 1
10
VSS
Supply ground
11
INT2
Interrupt input 2
12
SD2
Serial data 2
13
SC2
Serial clock 2
14
INT3
Interrupt input 3
15
SD3
Serial data 3
16
SC3
Serial clock 3
17
INT
Interrupt output
18
SCL
Serial clock line
19
SDA
Serial data line
20
V
DD
Supply voltage
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
0
°
C to +70
°
C
ORDER CODE
DRAWING NUMBER
20-Pin Plastic TSSOP
PCA9544 PW DH
SOT360-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9544PW | 4-channel I2C multiplexer and interrupt controller |
| PCA9544 | 4-channel IIC multiplexer and interrupt controller(4通道IIC多路復(fù)用器和中斷控制器) |
| PCA9546A | 4-channel I2C switch with reset |
| PCA9546 | 4-channel I2C switch with reset |
| PCA9546D | 4-channel I2C switch with reset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9545 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-channel I2C switch with interrupt logic and reset |
| PCA9545A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-channel I2C-bus switch with interrupt logic and reset |
| PCA9545ABS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-channel I2C-bus switch with interrupt logic and reset |
| PCA9545ABS,118 | 功能描述:多路器開關(guān) IC I2C SWITCH 4CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| PCA9545ABS-T | 功能描述:多路器開關(guān) IC I2C SWITCH 4CH RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時間（最大值）: 關(guān)閉時間（最大值）: 傳播延遲時間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
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