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SP3491CP Datasheet(PDF) 5 Page - Sipex Corporation |
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SP3491CP Datasheet(HTML) 5 Page - Sipex Corporation |
5 / 11 page 5 Rev. 10/11/02 SP3490/3491 Low Power Full-Duplex RS485 Transceivers © Copyright 2002 Sipex Corporation SPECIFICATIONS T AMB = TMIN to TMAX and VCC = +3.3V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP3491 DRIVER DC Characteristics Differential Output Voltage GND V CC Volts Unloaded; R = ∞; Figure 1 Differential Output Voltage 2 V CC Volts With Load; R = 50Ω; (RS-422); Figure 1 Differential Output Voltage 1.5 V CC Volts With Load; R = 27Ω; (RS-485); Figure 1 Change in Magnitude of Driver Differential Output Voltage for Complimentary States 0.2 Volts R = 27Ω or R = 50Ω; Figure 1 Driver Common-Mode Output Voltage 3 Volts R = 27Ω or R = 50Ω; Figure 1 Input HIGH Voltage 2.0 Volts Applies to D, REB, DE Input LOW Voltage 0.8 Volts Applies to D, REB, DE Input Current +10 µA Applies to D, REB, DE Driver Short-Circuit Current V OUT = HIGH +250 mA -7V < V O < +12V V OUT = LOW +250 mA -7V < V O < +12V SP3491 DRIVER AC Characteristics Maximum Data Rate 10 Mbps Driver Input to Output, t PLH 20 40 60 ns Figures 2 and 8 Driver Input to Output, t PHL 20 40 60 ns Figures 2 and 8 Differential Driver Skew 2 ns t PHL(Y) - tPLH(Y) , tPHL(Z) - tPLH(Z) , Figures 2 and 8 Driver Rise or Fall Time 5 20 ns From 10% to 90%; Figures 3 and 9 Driver Enable to Output HIGH 52 120 ns Figures 4 and 10 Driver Enable to Output LOW 60 120 ns Figures 5 and 10 Driver Disable from LOW 40 120 ns Figures 5 and 10 Driver Disable from HIGH 60 120 ns Figures 4 and 10 NOTE 1: The input pulse is supplied by a generator with the following characteristics: PRR=250KHz, 50% duty cycle, t r < 6.0ns, Z0=50Ω. NOTE 2: C L includes probe and stray capacitance. |
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