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SP490CS Datasheet(PDF) 2 Page - Sipex Corporation |
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SP490CS Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 10 page 2 Date: 05/10/04 SP490/491 Full Duplex RS-485 Transceivers © Copyright 2004 Sipex Corporation 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 Input Voltages Drivers................................................-0.5V to (V CC+0.5V) Receivers..................................................................±14V Output Voltages Drivers......................................................................±14V Receivers...........................................-0.5V to (V CC+0.5V) Storage Temperature....................................................-65˚C to +150˚ Power Dissipation.....................................................................1000mW T MIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP490 DRIVER DC Characteristics Differential Output Voltage GND V CC Volts Unloaded; R = ∞ ; see figure 1 Differential Output Voltage 2 V CC Volts With Load; R = 50Ω; (RS422); see figure 1 Differential Output Voltage 1.5 V CC Volts With Load;R = 27Ω; (RS485);see figure 1 Change in Magnitude of Driver Differential Output Voltage for Complimentary States 0.2 Volts R = 27Ω or R = 50Ω; see figure 1 Driver Common-Mode Output Voltage 3 Volts R = 27Ω or R = 50Ω; see figure 1 Input High Voltage 2.0 Volts Applies to D Input Low Voltage 0.8 Volts Applies to D Input Current ±10 µA Applies to D Driver Short-Circuit Current V OUT = HIGH 35 250 mA -7V ≤ V O ≤ +12V V OUT = LOW 35 250 mA -7V ≤ V O ≤ +12V SP490 DRIVER AC Characteristics Maximum Data Rate 5 Mbps Driver Input to Output 30 60 ns t PLH; RDIFF = 54Ω, CL1 = CL2 = 100pF; see figures 3 and 6 Driver Input to Output 30 60 ns t PHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; see figures 3 and 6 Driver Skew 5 ns see figures 3 and 6, t SKEW = | tDPLH - tDPHL | Driver Rise or Fall Time 15 40 ns From 10% to 90%; R DIFF = 54Ω, C L1 = CL2 = 100pF; see figures 3 and 6 SP490 RECEIVER DC Characteristics Differential Input Threshold 0.2 +0.2 Volts -7V ≤ V CM ≤ 12V Input Hysteresis 70 mV V CM = 0V Output Voltage High 3.5 Volts I O = -4mA, VID = +200mV Output Voltage Low 0.4 Volts I O = +4mA, VID = -200mV Input Resistance 12 15 kΩ -7V ≤ V CM ≤ 12V Input Current (A, B); V IN = 12V ±1.0 mA V IN = 12V Input Current (A, B); V IN = -7V -0.8 mA V IN = -7V Short-Circuit Current 85 mA 0V ≤ V O ≤ VCC ELECTRICAL CHARACTERISTICS |
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