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MAX3241ECAI Datasheet(PDF) 10 Page - Maxim Integrated Products |
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MAX3241ECAI Datasheet(HTML) 10 Page - Maxim Integrated Products |
10 / 22 page ±15kV ESD-Protected, Down to 10nA, 3.0V to 5.5V, Up to 1Mbps, True RS-232 Transceivers 10 ______________________________________________________________________________________ ESD protection can be tested in various ways; the transmitter outputs and receiver inputs for the MAX3222E/MAX3232E/MAX3241E/MAX3246E are characterized for protection to the following limits: • ±15kV using the Human Body Model • ±8kV using the Contact Discharge method specified in IEC 1000-4-2 • ±9kV (MAX3246E only) using the Contact Discharge method specified in IEC 1000-4-2 • ±15kV using the Air-Gap Discharge method speci- fied in IEC 1000-4-2 CHARGE-CURRENT LIMIT RESISTOR DISCHARGE RESISTANCE STORAGE CAPACITOR Cs 100pF RC 1M Ω RD 1500 Ω HIGH- VOLTAGE DC SOURCE DEVICE UNDER TEST Figure 4a. Human Body ESD Test Model IP 100% 90% 36.8% tRL TIME tDL CURRENT WAVEFORM PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE) Ir 10% 0 0 AMPERES Figure 4b. Human Body Model Current Waveform CHARGE-CURRENT LIMIT RESISTOR DISCHARGE RESISTANCE STORAGE CAPACITOR Cs 150pF RC 50M Ω to 100MΩ RD 330 Ω HIGH- VOLTAGE DC SOURCE DEVICE UNDER TEST Figure 5a. IEC 1000-4-2 ESD Test Model tr = 0.7ns to 1ns 30ns 60ns t 100% 90% 10% I Figure 5b. IEC 1000-4-2 ESD Generator Current Waveform Table 1. MAX3222E/MAX3237E/MAX3241E/ MAX3246E Shutdown and Enable Control Truth Table SHDN EN T_OUT R_OUT R_OUTB (MAX3237E/ MAX3241E) 0 0 High-Z Active Active 0 1 High-Z High-Z Active 1 0 Active Active Active 1 1 Active High-Z Active |
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