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SP3491EN Datasheet(PDF) 2 Page - Sipex Corporation |
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SP3491EN Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 11 page Rev. 10/11/02 SP3490/3491 Low Power Full-Duplex RS485 Transceivers © Copyright 2002 Sipex Corporation 2 SPECIFICATIONS T AMB = TMIN to TMAX and VCC = 3.3V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP3490 DRIVER DC Characteristics Differential Output Voltage GND V CC Volts Unloaded; R = ∞ Ω; 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 Input Low Voltage 0.8 Volts Input Current +10 µA Driver Short-Circuit Current V OUT = HIGH +250 mA -7V < V O < +12V V OUT = LOW +250 mA -7V < V O < +12V SP3490 DRIVER AC Characteristics Maximum Data Rate 10 Mbps Driver Input to Output, t PLH 20 40 60 ns R=27Ω, Figures 2 and 8 Driver Input to Output, t PHL 20 40 60 ns R=27Ω, 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 SP3490 RECEIVER DC Characteristics Differential Input Threshold 0.2 +0.2 Volts -7V < V CM < 12V Input Hysteresis 25 mV V CM = 0V Output Voltage High V CC-0.4 Volts I O = -1.5mA, VID = +200mV Output Voltage Low 0.4 Volts I O = +2.5mA, 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 60 mA 0V < V O < VCC 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 ............................................................................................. +6.0V Input Voltages Drivers ............................................................... -0.3V to +6.0V Receivers ......................................................................... ±14V Output Voltages Drivers .............................................................................. ±14V Receivers .......................................................... -0.3V to +6.0V Storage Temperature ................................................... -65˚C to +150˚ Power Dissipation per Package 8-pin NSOIC (derate 6.90mW/oC above +70oC) ..................... 600mW 8-pin PDIP (derate 11.8mW/oC above +70oC) ...................... 1000mW 14-pin NSOIC (derate 8.33mW/oC above +70oC) ................... 700mW 14-pin PDIP (derate 14.3mW/oC above +70oC) .................... 1200mW |
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