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SP491EEN Datasheet(PDF) 2 Page - Sipex Corporation |
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SP491EEN Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 12 page SP490EDS/14 SP490E Enhanced Full Duplex RS-485 Transceivers © Copyright 2000 Sipex Corporation 2 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 SPECIFICATIONS T MIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP490E 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 = 50 Ω; (RS-422); see Figure 1 Differential Output Voltage 1.5 V CC Volts With Load; R = 27 Ω; (RS-485);see Figure1 Change in Magnitude of Driver Differential Output Voltage for Complimentary States 0.2 Volts R = 27 Ω or R = 50Ω; see Figure 1 Driver Common-Mode Output Voltage 3 Volts R = 27 Ω 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 ±250 mA -7V ≤ V O ≤ +12V V OUT = LOW ±250 mA -7V ≤ V O ≤ +12V SP490E DRIVER AC Characteristics Maximum Data Rate 10 Mbps R DIFF = 54Ω, CL1 = CL2 = 100pF Driver Input to Output 20 30 60 ns t PLH; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 6 Driver Input to Output 20 30 60 ns t PHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 Driver Skew 5 ns see Figures 3 and 5, t SKEW = | tDPLH - tDPHL| Driver Rise or Fall Time 3 15 40 ns From 10% to 90%; R DIFF = 54Ω, C L1 = CL2 = 100pF; see Figures 3 and 5 SP490E 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 k Ω -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 |
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