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SP504MCM-L Datasheet(PDF) 3 Page - Exar Corporation |
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SP504MCM-L Datasheet(HTML) 3 Page - Exar Corporation |
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3 / 32 page  Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com SP504_02_2708 3 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 SPECIFICATIONS T A = +25°C and VCC = +5.0V unless otherwise noted. PARAMETER MIN. TYP. MAX. UNITS CONDITIONS RS-485 DRIVER (continued) Propagation Delay t PLH 50 80 00 ns T A @ 25°C and VCC = +5V only Fig- ures 3a and 5; R L= 54Ω, CL=50pF Differential Driver Skew 20 40 ns |t PHL - tPLH|; TA @ 25°C RS-485 RECEIVER TTL Output Levels V OL 0.4 Volts V OH 2.4 Volts Input HIGH Threshold +0.2 +2 Volts (a)-(b) LOW Threshold -7.0 -0.2 Volts (a)-(b) Common Mode Range -7.0 +2 Volts HIGH Input Current Refer to Receiver input graph LOW Input Current Refer to Receiver input graph Receiver Sensitivity +/-0.2 Volts Over -7V to +2V common mode Range Input Impedance 2 kΩ Max. Transmission Rate 0 Mbps Figure 3a Propagation Delay t PHL 80 0 80 ns T A @ 25°C and VCC = +5V only. Figures 3a 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 V.35 DRIVER TTL Input Levels V IL 0.8 Volts V IH 2.0 Volts Outputs All Outputs measured with 150Ω termination resistor connected to the non-inverting outputs as shown in Figure 9. Differential Output +/-0.44 +/-0.66 Volts R L = 100Ω Source Impedance 50 00 50 Ω Short-Circuit Impedance 35 50 65 Ω V OUT = -2V to +2V; A = B Voltage Output Offset -0.6 +0.6 Volts Transition Time 35 60 ns 48kbps data rate; T A @ 25°C Max. Transmission Rate 0 Mbps R L = 100Ω Propagation Delay t PHL 50 80 00 ns T A @ 25°C and VCC = +5V only Figures 3b and 5 Propagation Delay t PLH 50 80 00 ns DIfferential Driver Skew 30 40 ns |t PHL - tPLH|; TA @ +25°C V.35 RECEIVER TTL Output Levels V OL 0.4 Volts V OH 2.4 Volts |
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