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MAX253ESA/V 数据表(PDF) 11 Page - Maxim Integrated Products |
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MAX253ESA/V 数据表(HTML) 11 Page - Maxim Integrated Products |
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11 / 18 page ![]() Transformer Driver for Isolated RS-485 Interface ______________________________________________________________________________________ 11 C3 0.1µF C1 0.1µF C2 22µF 5V @ 200mA ISO OUTPUT 5V VIN L2 25µH MAX253 D1 D2 FS GND1 GND2 VCC 1 8 6 27 3 FREQUENCY SWITCH SD 4 C7 2.2µF FILTER OUTPUT OUTPUT OPTIONAL 21kHz LOWPASS OUTPUT FILTER TP1 1N5817 1CT:1.3CT* 1N5817 ON / OFF *SEE TABLE 2 Figure 6. 5V to Isolated 5V Application Circuit C3 0.1µF C1 0.1µF C2 22µF 5V @ 100mA ISO OUTPUT 3.3V VIN L2 25µH MAX253 D1 D2 FS GND1 GND2 VCC 1 8 6 27 3 FREQUENCY SWITCH SD 4 C7 2.2µF FILTER OUTPUT OUTPUT OPTIONAL 21kHz LOWPASS OUTPUT FILTER TP1 1N5817 1CT:2.1CT* 1N5817 ON / OFF 1N5817 1N5817 C4 0.1µF *SEE TABLE 2 Figure 7. 3.3V to Isolated 5V Application Circuit |
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