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ADM3485 Datasheet(PDF) 4 Page - Analog Devices |
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ADM3485 Datasheet(HTML) 4 Page - Analog Devices |
4 / 20 page ADM3483/ADM3485/ADM3488/ADM3490/ADM3491 Data Sheet Rev. E | Page 4 of 20 SPECIFICATIONS VCC = 3.3 V ± 0.3 V, TA = TMIN to TMAX, unless otherwise noted. Table 2. Parameter Min Typ Max Unit Test Conditions/Comments DRIVER Differential Output Voltage (VOD) 2.0 V RL = 100 Ω (RS-422), VCC = 3.3 V ± 5% (see Figure 17) 1.5 V RL = 54 Ω (RS-485) (see Figure 17) 1.5 V RL = 60 Ω (RS-485), VCC = 3.3 V (see Figure 18) Δ |VOD| for Complementary Output States1 0.2 V RL = 54 Ω or 100 Ω (see Figure 17) Common-Mode Output Voltage (VOC) 3 V RL = 54 Ω or 100 Ω (see Figure 17) Δ |VOC| for Common-Mode Output Voltage1 0.2 V RL = 54 Ω or 100 Ω (see Figure 17) DRIVER INPUT LOGIC CMOS Input Logic Threshold Low (VIL) 0.8 V DE, DI, RE CMOS Input Logic Threshold High (VIH) 2.0 V DE, DI, RE CMOS Logic Input Current (IIN1) ±2 μA DE, DI, RE 1.0 mA VIN = 12 V, DE = 0 V, VCC = 0 V or 3.6 V Input Current—A, B (IIN2) −0.8 mA VIN = −7 V, DE = 0 V, VCC = 0 V or 3.6 V 0.1 μA VIN = 12 V, DE = 0 V, RE = 0 V, VCC = 0 V or 3.6 V, ADM3491 only Output Leakage—Y, Z (IO) −0.1 μA VIN = −7 V, DE = 0 V, RE = 0 V, VCC = 0 V or 3.6 V, ADM3491 only 0.01 μA VIN = 12 V, DE = 0 V, RE = VCC, VCC = 0 V or 3.6 V, ADM3491 only Output Leakage (Y, Z) in Shutdown Mode (IO) −0.01 μA VIN = −7 V, DE = 0 V, RE = VCC, VCC = 0 V or 3.6 V, ADM3491 only RECEIVER Differential Input Threshold Voltage (VTH) −0.2 +0.2 V −7 V < VCM < +12 V Input Hysteresis (Δ VTH) 50 mV VCM = 0 V CMOS Output Voltage High (VOH) VCC – 0.4 V IOUT = −1.5 mA, VID = 200 mV (see Figure 19) CMOS Output Voltage Low (VOL) 0.4 V IOUT = 2.5 mA, VID = 200 mV (see Figure 19) Three-State Output Leakage Current (IOZR) ±1 μA VCC = 3.6 V, 0 V ≤ VOUT ≤ VCC Input Resistance (RIN) 12 kΩ −7 V < VCM < +12 V POWER SUPPLY CURRENT 1.1 2.2 mA DE = VCC, RE = 0 V or VCC, no load, DI = 0 V or VCC Supply Current (ICC) 0.95 1.9 mA DE = 0 V, RE = 0 V, no load, DI = 0 V or VCC Supply Current in Shutdown Mode (ISHDN) 0.002 1 μA DE = 0 V, RE = VCC, DI = VCC or 0 V −250 mA VOUT = −7 V Driver Short-Circuit Output Current (IOSD) 250 mA VOUT = 12 V Receiver Short-Circuit Output Current (IOSR) ±8 ±60 mA 0 V < VRO < VCC 1 ∆VOD and ∆VOC are the changes in VOD and VOC, respectively, when DI input changes state. |
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