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ST202ECTR Arkusz danych(PDF) 4 Page - STMicroelectronics |
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ST202ECTR Arkusz danych(HTML) 4 Page - STMicroelectronics |
4 / 12 page RECEIVER ELECTRICAL CHARACTERISTICS (C1 -C4 = 0.1 µF for ST202E, C1 -C4 =1µF for ST232E, VCC =5V ± 10%, TA = -40 to 85 oC, unless otherwise specified. Typical Valus are referred to TA =25 oC) Symb ol Parameter T est Con ditio ns Value Un it Min. T yp. Max. VRIN Receiver Input Voltage Operating Range -30 30 V RRIN RS-232 Input Resistance TA =25 oC, V CC = 5 V 357 K Ω VRIL RS-232 Input Logic Threshold Low TA =25 oC, VCC = 5 V 0.8 1.2 V VRIH RS-232 Input Logic Threshold High TA =25 oC, V CC = 5 V 1.7 2.4 V VRIHYS RS-232 Input Hysteresis VCC = 5 V 0.2 0.5 1 V VROL TTL/CMOS Output Voltage Low IOUT = 3.2mA 0.4 V VROH TTL/CMOS Output Voltage High IOUT = -1mA 3.5 VCC-0.4 V tdR Propagation Delay Time CL=150pF 0.5 10 µs ST202E/ST232E 4/12 |
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