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SP495CT Datasheet(PDF) 2 Page - Sipex Corporation |
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SP495CT Datasheet(HTML) 2 Page - Sipex Corporation |
2 / 6 page SP495 Quad Differential RS-485 Transceiver © Copyright 2000 Sipex Corporation 2 SPECIFICATIONS T MIN to TMAX and VCC = 5V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS 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 = 50 Ω; (RS-422); see Figure 1 Differential Output Voltage 1.5 V CC Volts With Load; R = 27 Ω; (RS-485); see Figure 1 Change in Magnitude of Driver Differential Output Voltage for Complimentary States 0.2 Volts R = 27 Ω or R = 50Ω; see Figure 1 Driver Common-Mode Output Voltage 3 Volts R = 27 Ω or R = 50Ω; see Figure 1 Input High Voltage 2.0 Volts Applies to DRx, DEx/ REx Input Low Voltage 0.8 Volts Applies to DRx, DEx/ REx Input Current ±10 µA Applies to DRx, DEx/ REx Driver Short-Circuit Current V OUT = HIGH ±250 mA -7V ≤ V O ≤ 10V V OUT = LOW ±250 mA -7V ≤ V O ≤ 10V DRIVER AC Characteristics Maximum Driver Data Rate 10 Mbps R DIFF = 54Ω, CL1 = CL2 = 100pF Driver Input to Output 20 30 60 ns t PLH; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 6 Driver Input to Output 20 30 60 ns t PHL; RDIFF = 54Ω, CL1 = CL2 = 100pF; see Figures 3 and 6 Driver Skew 10 ns see Figures 3 and 6 Driver Rise or Fall Time 3 15 40 ns From 10% to 90%; R DIFF = 54Ω, C L1 = CL2 = 100pF; see Figures 3 and 6 Driver Enable to Output HIGH 40 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 = 15pF; see Figures 4 and 7; S 1 closed Driver Disable Time from HIGH 40 70 ns C L1 = CL2 = 15pF; see Figures 4 and 7; S 2 closed RECEIVER DC Characteristics Differential Input Threshold -0.2 +0.2 Volts -7V ≤ V CM ≤ 12V Input Hysteresis 70 mV V CM = 0V Output Voltage HIGH 3.5 Volts I O = -4mA, VID = +200mV 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...................................................-0.5V to (V CC+0.5V) Drivers................................................-0.5V to (V CC+0.5V) Receivers....................................................................15V Output Voltages Logic...................................................-0.5V to (V CC+0.5V) Drivers...........................................................-8V to 12.5V Receivers...........................................-0.5V to (V CC+0.5V) Storage Temperature....................................................-65˚C to +150˚C Power Dissipation.....................................................................1000mW |
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