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MAX3535ECWI 数据表(PDF) 18 Page - Maxim Integrated Products |
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MAX3535ECWI 数据表(HTML) 18 Page - Maxim Integrated Products |
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18 / 25 page ![]() +3V to +5V, 2500VRMS Isolated RS-485/RS-422 Transceivers with ±15kV ESD Protection 18 ______________________________________________________________________________________ Functional Tables Table 1. Transmitting Logic TRANSMITTING LOGIC INPUTS OUTPUTS DE DI Y Z 11 10 10 01 0X High impedance High impedance Table 2. Receiving Logic RECEIVING LOGIC INPUTS OUTPUTS RE VA - VB RO1 RO2 0 >-10mV 1 1 0<-200mV 0 0 0 Inputs open/shorted 1 1 1 >-10mV High impedance 1 1<-200mV High impedance 0 1 Inputs open/shorted High impedance 1 Table 3. Fault Mode NORMAL MODE FAULT MODES FUNCTION VCC1 > VUVH1 VCC2 > VUVH2 VCC1 < VUVL1 VCC2 > VUVH2 VCC1 > VUVH1 VCC2 < VUVL2 VCC1 < VUVL1 VCC2 < VUVL2 THERMAL SHUTDOWN INTERNAL COMMUNICATION FAULT Transformer driver (ST1, ST2) On On On On Off On RE = 0 Active High High High High High RE = VCC1 High impedance High impedance High impedance High impedance High impedance High impedance RO1 RE = floating Active High impedance High impedance High impedance High impedance High impedance RO2 Active Active Active Active Active Active Driver outputs (Y, Z) Active High impedance High impedance High impedance High impedance High impedance Internal barrier communication Active Disabled Disabled Disabled Disabled Communication attempted Fault indicator on RE Low (60µA pull- down) High (100µA pullup) High (100µA pullup) High (100µA pullup) High (100µA pullup) High (100µA pullup) |
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