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參數(shù)資料
| 型號： | PCA9546PW |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | 4-channel I2C switch with reset |
| 中文描述： | 9546 SERIES, 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16 |
| 封裝： | 4.40 MM, PLASTIC, MO-153, SOT403-1, TSSOP-16 |
| 文件頁數(shù)： | 6/17頁 |
| 文件大?。?/td> | 139K |
| 代理商： | PCA9546PW |
Philips Semiconductors
Product data sheet
PCA9546
4-channel I
2
C switch with reset
2004 Sep 30
6
VOLTAGE TRANSLATION
The pass gate transistors of the PCA9546 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 vs. V
DD
Figure 5 shows the voltage characteristics of the pass gate
transistors (note that the PCA9546 is only tested at the points
specified in the DC Characteristics section of this datasheet). In
order for the PCA9546 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
PCA9546 supply voltage is 3.5 V or lower so the PCA9546 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 |
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| PCA9549 | Octal bus switch with individually I2C-bus controlled enables |
| PCA9555N | 16-bit I2C and SMBus I/O port with interrupt |
| PCA9555 | 16-bit I2C and SMBus I/O port with interrupt |
| PCA9556 | Octal SMBus Registered Interface(八位SM總線寄存接口) |
| PCA9556PW | Octal SMBus Registered Interface |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9547 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-channel I2C-bus multiplexer with reset |
| PCA9547BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:8-channel I2C-bus multiplexer with reset |
| PCA9547BS,118 | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 8-CH I2C MUX W/RESET 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 |
| PCA9547BS,118-CUT TAPE | 制造商:NXP 功能描述:PCA9547 Series 8-Channel I2C-Bus Translating Multiplexer with Reset - HVQFN - 24 |
| PCA9547D | 功能描述:編碼器、解碼器、復(fù)用器和解復(fù)用器 MUX 8CH I2C BUS 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 |
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