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SP481E Datasheet(PDF) 2 Page - Sipex Corporation |
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SP481E Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 11 page Rev. 5/16/03 SP481E Low Power Half-Duplex RS485 Transceivers © Copyright 2003 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 Logic........................................................-0.3V to (V CC+0.5V) Drivers..................................................-0.3V to (V CC+0.5V) Receivers................................................................. ±15V SPECIFICATIONS T MIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP481E/SP485E 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 = 50Ω; (RS-422); see Figure 1 Differential Output Voltage 1.5 V CC Volts with load; R = 27Ω; (RS-485);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 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 SP481E/SP485E DRIVER AC Characteristics Maximum Data Rate 10 Mbps RE = 5V, DE = 5V; R DIFF = 54Ω, C L1 = CL2 = 100pF Driver Input to Output 20 30 60 ns t PLH; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 Driver Input to Output 20 30 80 ns t PLH; RDIFF = 54Ω, CLI = CL2 = 100pF; (SP485EMN ONLY) See Figures 3 and 5 Driver Input to Output 20 30 60 ns t PHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 5 Driver Input to Output 20 30 80 ns t PHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; (SP485EMN ONLY) see Figures 3 and 5 Driver Skew 5 10 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 & 6 Driver Enable to Output High 40 70 ns C L = 100pF; see Figures 4 & 6; S2 closed Driver Enable to Output Low 40 70 ns C L = 100pF; see Figures 4 & 6; S1 closed Driver Disable Time from Low 40 70 ns C L = 100pF; see Figures 4 & 6; S1 closed Driver Disable Time from High 40 70 ns C L = 100pF; see Figures 4 & 6; S2 closed Output Voltages Logic........................................................-0.3V to (V CC+0.5V) Drivers...................................................................... ±15V Receivers............................................-0.3V to (V CC+0.5V) Storage Temperature.......................................................-65˚C to +150˚C Power Dissipation per Package 8-pin NSOIC (derate 6.60mW/oC above +70oC)...........................550mW 8-pin PDIP (derate 11.8mW/oC above +70oC)............................1000mW |
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