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ST490ABDR Scheda tecnica(PDF) 6 Page - STMicroelectronics |
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ST490ABDR Scheda tecnica(HTML) 6 Page - STMicroelectronics |
6 / 17 page Electrical characteristics ST490A 6/17 4 Electrical characteristics Table 5. Electrical characteristics (VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA=25°C) Symbol Parameter Min. Typ. Max. Unit ISUPPLY No load supply current 2 5 mA CIN Input capacitance 1.8 pF CYZ Driver output capacitance 1.2 pF COUT Output capacitance 2.3 pF Table 6. Transmitter electrical characteristics (VCC = 4.5V to 5.5V, TA = -40 to 85°C, unless otherwise specified. Typical values are referred to TA=25°C) Symbol Parameter Test conditions Min. Typ. Max. Unit VOD1 Differential drive output (no load) VCC V VOD2 Differential drive output (with load) RL= 54Ω (RS-422) (Figure 1.)1.5 2.6 5 V VOD3 Differential drive output (with load) RL= 100Ω (RS-422) (Figure 1.)2 3 V ∆V OD Change in magnitude of driver differential output voltage for complementary output states RL= 54Ω or 100Ω (Figure 1.)0 0.2 V VOC Driver common mode output voltage RL= 54Ω (Figure 1.)1 3 V ∆V OC Change in magnitude of driver common mode output voltage RL= 54Ω (Figure 1.)0 0.2 V IOFF Power off output current VCC = 0V, VO=-7V to 12V ± 100 µA IOSD Driver short circuit output current VO=-7V to 12V ± 35 ± 250 mA VIL Input logic threshold low 0.8 V VIH Input logic threshold high 2 V |
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