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參數(shù)資料
| 型號： | PCA9561PW |
| 元件分類： | EEPROM |
| 英文描述： | EEPROM |
| 中文描述： | EEPROM的 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大?。?/td> | 113K |
| 代理商： | PCA9561PW |
Philips Semiconductors
Product data
PCA9544
4-channel I
2
C multiplexer with interrupt logic
2002 Feb 20
5
VOLTAGE TRANSLATION
The pass gate transistors of the PCA9544 are constructed such that
the V
DD
voltage can be used to limit the maximum voltage that will
be passed from one I
2
C bus to another.
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
V
pass
vs. V
DD
2.5
3.0
3.5
4.0
4.5
5.0
5.5
V
pass
V
DD
MINIMUM
TYPICAL
MAXIMUM
SW00820
2.0
Figure 5. V
pass
voltage
Figure 5 shows the voltage characteristics of the pass gate
transistors (note that the graph was generated using the data
specified in the DC Characteristics section of this datasheet). In
order for the PCA9544 to act as a voltage translator, the V
pass
voltage should be equal to, or lower than the lowest bus voltage. For
example, if the main bus was running at 5 V, and the downstream
buses were 3.3 V and 2.7 V, then V
pass
should be equal to or below
2.7 V to effectively clamp the downstream bus voltages. Looking at
Figure 5, we see that V
pass
(max.) will be at 2.7 V when the
PCA9544 supply voltage is 3.5 V or lower so the PCA9544 supply
voltage could be set to 3.3 V. Pull-up resistors can then be used to
bring the bus voltages to their appropriate levels (see Figure 12).
More Information can be found in Application Note AN262 PCA954X
family of I
2
C/SMBus multiplexers and switches.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9544PWDH | 4-channel I2C multiplexer and interrupt controller |
| PCA9544PW | 4-channel I2C multiplexer and interrupt controller |
| PCA9544 | 4-channel IIC multiplexer and interrupt controller(4通道IIC多路復用器和中斷控制器) |
| PCA9546A | 4-channel I2C switch with reset |
| PCA9546 | 4-channel I2C switch with reset |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9561PW,112 | 功能描述:多路器開關(guān) IC QUAD 6-BT MULTIPLEX 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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| PCA9561PW,118 | 功能描述:多路器開關(guān) IC QUAD 6BIT MULTIPLEX I2C EEPROM 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 安裝風格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| PCA9564BS,118 | 功能描述:I2C 接口集成電路 400KHZ I2C BUS CTRLR RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| PCA9564BS-T | 功能描述:I2C 接口集成電路 400KHZ I2C BUS CTRLR RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
| PCA9564D | 功能描述:I2C 接口集成電路 400KHZ I2C BUS CTRLR RoHS:否 制造商:NXP Semiconductors 電源電壓-最大:5.5 V 電源電壓-最小:2.3 V 最大工作頻率:400 KHz 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-16 |
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