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SP1491EEP Datasheet(PDF) 2 Page - Sipex Corporation |
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SP1491EEP Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 10 page 2 Date: 5/11/05 SP1490E/1491E 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 SP1490E/1491E DRIVER DC Characteristics Differential Output Voltage 3.5 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 ±250 mA -7V ≤ V O ≤ +12V V OUT = LOW ±250 mA -7V ≤ V O ≤ +12V SP1490E/1491E DRIVER AC Characteristics Maximum Data Rate 20 Mbps Driver Input to Output 30 40 ns t R/F; RDIFF = 54Ω, CL1 = CL2 = 100pF; see figures 3 and 6 Driver Input to Output 30 40 ns t R/F; RDIFF = 54Ω, CL1 = CL2 = 100pF; see figures 3 and 6 Driver Skew 5 ns see figures 3 and 6, t R/F = | tDPLH - tDPHL | Driver Rise or Fall Time 8 20 ns From 10% to 90%; R DIFF = 54Ω, SP1491E only C L1 = CL2 = 100pF; see figures 3 and 6 t R/F Driver Enable to Output High 20 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S 2 closed Driver Enable to Output Low 40 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S 1 closed Driver Disable Time from Low 40 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S 1 closed Driver Disable Time from High 40 70 ns C L1 = CL2 = 100pF; see figures 4 and 7; S 2 closed ELECTRICAL CHARACTERISTICS |
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