Datenblatt-Suchmaschine für elektronische Bauteile |
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ST485ECN Datenblatt(PDF) 6 Page - STMicroelectronics |
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ST485ECN Datenblatt(HTML) 6 Page - STMicroelectronics |
6 / 19 page Electrical characteristics ST485E 6/19 4 Electrical characteristics Table 5. ESD Performance: transmitter outputs, receiver inputs Symbol Parameter Test conditions Min. Typ. Max. Unit ESD ESD Protection voltage Human body model ±15 KV ESD ESD Protection voltage IEC-1000-4-2 ±8KV Table 6. DC Electrical characteristics (VCC = 5V ± 5%, TA = TMIN to TMAX, unless otherwise specified. Typical values are referred to TA = 25°C) Symbol Parameter Test conditions (1) Min. Typ. Max. Unit VOD1 Differential driver output (No Load) 5V VOD2 Differential driver output (With Load) RL = 27Ω (RS-485) (Figure 2.) RL = 50Ω (RS-422) (Figure 2.) 1.5 5 5 V V ∆VOD Change in magnitude of driver differential output voltage for complementary output states RL = 27Ω or 50Ω (Figure 2.)0.2 V VOC Driver common-mode output voltage RL = 27Ω or 50Ω (Figure 2.)3 V ∆VOC Change in magnitude of driver common-mode output voltage for complementary output states RL = 27Ω or 50Ω (Figure 2.)0.2 V VIH Input high voltage RE, DE, DI 2.0 V VIL Input low voltage RE, DE, DI 0.8 V IIN1 Input current RE, DE, DI ± 2 µA IIN2 Input current (A, B) VCM = 0V or 5.25V, VDE = 0V VIN = 12V VIN = -7V 1 -0.8 mA mA VTH Receiver differential threshold voltage VCM = -7 to 12V -0.2 0.2 V ∆VTH Receiver input hysteresis VCM = 0V 70 mV VOH Receiver output high voltage IO = -4mA, VID = 200mV 3.5 V VOL Receiver output low voltage IO = 4mA, VID = -200mV 0.4 V IOZR 3-State (high impedance) output current at receiver VO = 0.4 to 2.4V ± 1 µA RIN Receiver input resistance VCM = -7 to 12V 24 K Ω ICC No load supply current (2) VRE = 0V or VCC VDE = VCC VDE = 0V 400 300 900 500 µA µA IOSD1 Driver short-circuit current, VO=High VO = -7 to 12V (3) 35 250 mA |
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