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SP3485EP Datasheet(PDF) 2 Page - Sipex Corporation |
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SP3485EP Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 9 page 10/15/02 SP3481/3485 Low Power Half-Duplex RS485 Transceivers © Copyright 2000 Sipex Corporation 2 SPECIFICATIONS T AMB = TMIN to TMAX and VCC = +3.3V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP3481/SP3485 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 DE, DI, RE Input Low Voltage 0.8 Volts Applies to DE, DI, RE Input Current ±10 µA Applies to DE, DI, RE Driver Short-Circuit Current V OUT = HIGH ±250 mA -7V ≤ V O ≤ +12V V OUT = LOW ±250 mA -7V ≤ V O ≤ +12V SP3481/SP3485 DRIVER AC Characteristics Maximum Data Rate 10 Mbps RE = V CC, DE = VCC 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 10 ns t DO1 - tDO2 Figures 2 and 9 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 Time from Low 40 120 ns Figures 5 and 10 Driver Disable Time from High 60 120 ns Figures 4 and 10 SP3481/SP3485 RECEIVER DC Characteristics Differential Input Threshold -0.2 +0.2 Volts -7V ≤ V CM ≤ +12V Input Hysteresis 20 mV V CM = 0V Output Voltage High V CC-0.4 Volts V ID = +200mV, -1.5mA Output Voltage Low 0.4 Volts V ID = -200mV, 2.5mA Three-State (High Impedance) Output Current +1 µA 0V ≤ V O ≤ VCC; RE = VCC Input Resistance 12 15 kΩ -7V ≤ V CM ≤ +12V Input Current (A, B); V IN = 12V 1.0 mA DE = 0V, V CC = 0V or 3.6V, VIN = 12V Input Current (A, B); V IN = -7V -0.8 mA DE = 0V, V CC = 0V or 3.6V, VIN = -7V Short-Circuit Current 7 60 mA 0V ≤ V CM ≤ 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 Logic ..................................................... -0.3V to +6.0V Drivers ................................................... -0.3V to +6.0V Receivers ............................................................ ±15V Output Voltages Drivers .................................................................. ±15V Receivers .............................................. -0.3V to +6.0V Storage Temperature ................................................ .-65˚C to +150˚C Power Dissipation per Package 8-pin NSOIC (derate 6.90mW/oC above +70oC) ..................... 600mW 8-pin PDIP (derate 11.8mW/oC above +70oC) ...................... 1000mW |
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