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ST232CTR Datasheet(PDF) 6 Page - STMicroelectronics |
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ST232CTR Datasheet(HTML) 6 Page - STMicroelectronics |
6 / 19 page Electrical characteristics ST232B - ST232C 6/19 Table 6. Receiver electrical characteristics (C1 - C4 = 0.1 µF, VCC = 5 V ± 10 %, TA = -40 to 85 °C, unless otherwise specified. Typical values are referred to TA = 25 °C). Symbol Parameter Test condition Min. Typ. Max. Unit VRIN Receiver input voltage operating range -30 30 V RRIN RS-232 input resistance TA = 25°C, VCC = 5 V, VRIN = 5V 35 7 k Ω VRIL RS-232 input threshold low TA = 25°C, VCC = 5 V 0.8 1.2 V VRIH RS-232 input threshold high TA = 25°C, VCC = 5 V 1.7 2.4 V VRIHYS RS-232 input hysteresis VCC = 5V 0.2 0.5 1 V VROL TTL/CMOS output voltage low IOUT = 3.2mA (to VCC)0.4 V VROH TTL/CMOS output voltage high IOUT = -1mA (to GND) 3.5 VCC-0.4 V ISCR Receiver output short circuit current ±10 mA tDR Receiver propagation delay CL = 150pF (1) 0.3 1 µs 1. RS-232 in to TTL-CMOS out (from 50% to 50%) |
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