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參數(shù)資料
| 型號(hào)： | PCA9543D |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | 2-channel I2C switch with interrupt logic and reset |
| 中文描述： | 9543 SERIES, 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO14 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT108-1, SOP-14 |
| 文件頁數(shù)： | 5/15頁 |
| 文件大?。?/td> | 120K |
| 代理商： | PCA9543D |
Philips Semiconductors
Product data sheet
PCA9543
2-channel I
2
C switch with interrupt logic and reset
2004 Oct 01
5
VOLTAGE TRANSLATION
The pass gate transistors of the PCA9543 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 PCA9543 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
PCA9543 supply voltage is 3.5 V or lower so the PCA9543 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.
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| PCA9543PW | 2-channel I2C switch with interrupt logic and reset |
| PCA9544D | BUS CONTROLLER |
| PCA9561D | EEPROM |
| PCA9561PW | EEPROM |
| PCA9544PWDH | 4-channel I2C multiplexer and interrupt controller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9543PW | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:2-channel I2C switch with interrupt logic and reset |
| PCA9544 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-channel I2C multiplexer and interrupt controller |
| PCA9544A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC |
| PCA9544A_07 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus MULTIPLEXER WITH INTERRUPT LOGIC |
| PCA9544A_09 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:4-channel I2C-bus multiplexer with interrupt logic |
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