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SP504 Datasheet(PDF) 5 Page - Exar Corporation |
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SP504 Datasheet(HTML) 5 Page - Exar Corporation |
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5 / 32 page  Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 5 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RS-422 RECEIVER (V.11) (continued) Propagation Delay t PHL 80 0 80 ns T A @ 25°C and VCC = +5V only. Figures 3b and 7; A is inverting and B is non-inverting. Propagation Delay t PLH 80 0 80 ns DIfferential Receiver Skew 30 ns |t PHL - tPLH|; TA @ 25°C RS-232 DRIVER (V.28) TTL Input Levels V IL 0.8 Volts V IH 2.0 Volts Outputs HIGH Level Output +5.0 +5.0 Volts R L = 3kΩ, VIN = 0.8V LOW Level Output -5.0 -5.0 Volts R L = 3kΩ, VIN = 2.0V Open Circuit Voltage -5 +5 Volts Short Circuit Current +/-00 mA V OUT = 0V Power Off Impedance 300 Ω V CC = 0V, VOUT = +/-2.0V Slew Rate 30 V/µs R L = 3kΩ, CL = 50pF; VCC = +5.0V, T A @ 25°C Transistion Time .56 µs R L = 3KΩ, CL = 2500pF; between +/-3V, T A @ +25°C Max. Transmission Rate 20 230.4 kbps R L = 3kΩ, CL = 2500pF Propagation Delay t PHL 0.5 4 µs T A @ 25°C and VCC = +5V only. Measured from .5V of V IN to 50% of V OUT; RL = 3kΩ Propagation Delay t PLH 0.5 4 µs RS-232 RECEIVER (V.28) TTL Output Levels V OL 0.4 Volts V OH 2.4 Volts Input HIGH Threshold .7 3.0 Volts LOW Threshold 0.8 .2 Volts Reciever Open Circuit Bias +2.0 Volts Input Impedance 3 5 7 kΩ V IN = +5V to -5V Max. Transmission Rate 20 230.4 kbps Propagation Delay t PHL 0.05 0.25 µs T A @ 25°C and VCC = +5V only. Measured from 50% of V IN to .5V of V OUT Propagation Delay t PLH 0.05 0.25 µs RS-423 DRIVER (V.10) TTL Input Levels V IL 0.8 Volts V IH 2.0 Volts Outputs Open Circuit Voltage, V O +/-4.0 +/-6.0 Volts R L = 3.9kΩ SPECIFICATIONS T A = +25°C and VCC = +5.0V unless otherwise noted. |
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