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ADM3485EARZ-REEL Scheda tecnica(PDF) 3 Page - Analog Devices |
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ADM3485EARZ-REEL Scheda tecnica(HTML) 3 Page - Analog Devices |
3 / 16 page ADM3485E Rev. D | Page 3 of 16 SPECIFICATIONS VCC = +3.3 V ± 0.3 V. All specifications TMIN to TMAX, unless otherwise noted. Table 1. Parameter Symbol Min Typ Max Unit Test Conditions/Comments DRIVER Differential Outputs Differential Output Voltage VOD 2.0 V RL = 100 Ω (RS-422) (see Figure 3) 1.5 V RL = 54 Ω (RS-485) (see Figure 3) 1.5 V RL = 60 Ω (RS-485) (see Figure 4) ∆|VOD| for Complementary Output States1 ∆VOD 0.2 V RL = 54 Ω or 100 Ω (see Figure 3) Common-Mode Output Voltage VOC 3 V RL = 54 Ω or 100 Ω ( see Figure 3) ∆|VOC| for Complementary Output States1 ∆VOC 0.2 V RL = 54 Ω or 100 Ω (see Figure 3) Short-Circuit Output Current IOSD –250 mA VOUT = –7 V 250 mA VOUT = 12 V Logic Inputs Input Low Voltage VIL 0.8 V DE, DI, RE Input High Voltage VIH 2.0 V DE, DI, RE Logic Input Current IIN1 ±2 µA DE, DI, RE RECEIVER Differential Inputs Differential Input Threshold Voltage VTH –0.2 +0.2 V –7 V < VCM < +12 V Input Voltage Hysteresis ∆VTH 50 mV VCM = 0 V Input Resistance (A, B) RIN 12 kΩ –7 V < VCM < +12 V Input Current (A, B) IIN2 1.0 mA DE = 0 V, VCC = 0 V or 3.6 V, VIN = 12 V –0.8 mA DE = 0 V, VCC = 0 V or 3.6 V, VIN = –7 V RO Logic Output Output Voltage High VOH VCC – 0.4 V V IOUT = –1.5 mA, VID = 200 mV (see Figure 5) Output Voltage Low VOL 0.4 V IOUT = 2.5 mA, VID = 200 mV (see Figure 5) Short-Circuit Output Current IOSR ±8 ±60 mA 0 V < VRO < VCC Tristate Output Leakage Current IOZR ±1 µA VCC = 3.6 V, 0 V < VOUT < VCC POWER SUPPLY CURRENT Voltage Range VCC 3.0 3.6 V Supply Current ICC 1.1 2.2 mA No load, DI = 0 V or VCC, DE = VCC, RE = 0 V or VCC 0.95 1.9 mA No load, DI = 0 V or VCC, DE = 0 V, RE = 0 V Shutdown Current ISHDN 0.002 1 µA DE = 0 V, RE = VCC, DI = 0 V or VCC ESD PROTECTION A, B Pins ±15 kV Human body model All Pins Except A, B ±4 kV Human body model 1 Δ|VOD| and Δ|VOC| are the changes in VOD and VOC, respectively, when DI input changes state. |
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