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MAX3209EEUU Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX3209EEUU Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 8 page ±15kV ESD-Protected, 12V, Dual RS-232 Serial Port with Low-Power Standby for Motherboards/Desktops 4 _______________________________________________________________________________________ Pin Description PIN NAME FUNCTION 6, 7, 8, 12, 13, 14 T_IN TTL/CMOS Transmitter Inputs 9 VSTBY Standby Power Supply for R5 and R10 11 C1+ Positive Terminal of the Inverting Charge-Pump Capacitor 1–5, 15–19 R_OUT TTL/CMOS Receiver Outputs 10 VDD +12V Single-Supply Voltage 20–24, 34–38 R_IN RS-232 Receiver Inputs 25, 26, 27, 31, 32, 33 T_OUT RS-232 Transmitter Outputs 28 GND Ground tF2 tF1 tPHL tPLH tR1 tR2 1.5V 3.0V 0 0V DRIVER INPUT VOUT VOH VOL 3.3V 3.0V -3.0V -3.3V RL CL SIGNAL GENERATOR Figure 1. Slew-Rate Test Circuit and Timing Diagram 29 C1- Negative Terminal of the Inverting Charge-Pump Capacitor 30 V- -12V generated by the inverting charge pump Typical Operating Characteristics (continued) (VSTBY = +5V, VDD = +12V, C1 = C2 = 0.1µF, TA = +25°C, unless otherwise noted.) 0 0.1 0.2 0.3 0.4 0.5 0.6 02 1 3456789 RECEIVER OUTPUT LOW VOLTAGE vs. SINK CURRENT ISINK (mA) 0 1.5 1.0 0.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 010 5 15202530 RECEIVER OUTPUT HIGH VOLTAGE vs. SOURCE CURRENT ISOURCE (mA) |
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