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參數(shù)資料
| 型號： | AN10145 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Bi-directional low voltage translators |
| 中文描述： | 雙向低電壓轉(zhuǎn)換器 |
| 文件頁數(shù)： | 14/24頁 |
| 文件大?。?/td> | 325K |
| 代理商： | AN10145 |
14
APPLICATIONS
Voltage Level Translation
Figure 17 shows an application similar to the one shown in Figure 2 but with only one ASIC I
2
C port that has to interface
with both the 3.3 V and 5 V I
2
C devices. Since the voltage difference between the low voltage (1.5V, left side) and the
voltage on the resistor for the GREF (Gate pull-up) is higher than 1.5V, the resistors R30 and R25 are not required unless
the devices on MI2C_CLK are leaky.
Note: Pull up resistors on the low voltage side are required if the difference between the voltage applied on the
Gate reference (GREF) pull up resistor and the low side voltage is lower than 1.5 V.
Figure 17. Example of 1.5 V I
2
C Bus to both 3.3V SMBus and 5.0 V I
2
C Bus
Note: Figure 2 and Figure 17 are from the Intel reference design. Resistor sizing works fine but is not in accordance with
the recommendations in this application note.
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