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SP485R Fiches technique(PDF) 2 Page - Exar Corporation |
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SP485R Fiches technique(HTML) 2 Page - Exar Corporation |
2 / 9 page 2 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP485R_00_072309 ABSOLUTE MAXIMUM RATINGS These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. V CC.......................................................................+7V Storage Temperature.......................-65˚C to +150˚C ELECTRICAL CHARACTERISTICS Typically 25ºC @ V CC = +5V unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS LOGIC INPUTS V IL 0.8 Volts V IH 2.0 Volts LOGIC OUTPUTS V OL 0.4 Volts I OUT = -3.2mA V OH 2.4 Volts I OUT = .0mA RS-485 DRIVER DC Characteristics Open Circuit Voltage 6.0 Volts Differential Output Voltage .5 5.0 Volts R L = 54Ω, CL = 50pF Balance +/-0.2 Volts |V T| - |VT| Common-Mode Output 3.0 Volts Output Current 28.0 mA R L = 54Ω Short Circuit Current +/-250 mA Terminated in -7V to +2V RS-485 DRIVER AC Characteristics Maximum Data Rate 5 Mbps R L = 54Ω, Output Transition Time 30 ns Rise/fall time, 0% to 90% Propagation Delay, t PLH 60 00 ns See Figures 4 & 6, R DIFF = 54Ω, C L = CL2 = 00pF Propagation Delay, t PHL 60 00 ns See Figures 4 & 6, R DIFF = 54Ω, C L = CL2 = 00pF Driver Output Skew 5 5 ns see Figures 4 and 6, t SKEW = |tDPHL - tDPLH| RS-485 RECEIVER DC Characteristics Output Voltage Low, V OL 0.4 Volts Output Voltage High, V OH 2.4 Volts Tri-State Output Current +/- µA 0.4V ≤ V OUT ≤ 2.4V; RE = Vcc Power Dissipation 8-pin NSOIC.................................................000mW (Ø JA = 62ºC/W) 8-pin PDIP....................................................000mW (Ø JA = 62ºC/W) |
Numéro de pièce similaire - SP485R |
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Description similaire - SP485R |
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