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SP3493EN Datasheet(PDF) 3 Page - Sipex Corporation |
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SP3493EN Datasheet(HTML) 3 Page - Sipex Corporation |
3 / 11 page 3 10/16/02 SP3493/3494 +3.3V Low Power Slew-Rate Limited RS-485/RS-422 Transceivers © Copyright 2002 Sipex Corporation SPECIFICATIONS (continued) T AMB = TMIN to TMAX and VCC = 3.3V ± 5% unless otherwise noted. PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS SP3493 RECEIVER AC Characteristics Maximum Data Rate 250 kbps Receiver Input to Output, t PLH 35 70 120 ns Figures 6 and 11 Receiver Input to Output, t PHL 35 70 120 ns Figures 6 and 11 Differential Receiver Skew 10 ns Figures 6 and 11 SP3493 POWER REQUIREMENTS Supply Current 1000 2000 µAD = 0 or V CC SP3494 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 SP3494 DRIVER AC Characteristics Maximum Data Rate 2.5 Mbps RE = V CC, DE = VCC Driver Input to Output, t PLH 20 45 75 ns Figures 2 and 8 Driver Input to Output, t PHL 20 45 75 ns Figures 2 and 8 Differential Driver Skew 10 ns t DO1 - tDO2 , Figures 2 and 9 Driver Rise or Fall Time 30 70 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 SP3494 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 |
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