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SP331CT Datasheet(PDF) 3 Page - Sipex Corporation |
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SP331CT Datasheet(HTML) 3 Page - Sipex Corporation |
3 / 13 page Date: 03-04-05 Programmable Dual RS-232/RS-485 Transceiver © Copyright 2005 Sipex Corporation 3 ELECTRICAL CHARACTERISTICS Typically 25°C @ Vcc = +5V unless otherwise noted. MIN. TYP. MAX. UNITS CONDITIONS RS-485 DRIVER Balance ±0.2 Volts |V T| - |VT| Common-Mode Output 3.0 Volts Output Current 28.0 mA R L=54Ω Short Circuit Current ±250 mA Terminated in –7V to +10V AC Characteristics Maximum Data Rate 10 Mbps R L=54Ω Output Transition Time 30 50 ns Rise/fall time, 10%–90% Propagation Delay See Figures 2 & 4 t PHL 80 120 ns R DIFF=54Ω, CL1=CL2=100pF t PLH 80 120 ns R DIFF=54Ω, CL1=CL2=100pF Driver Output Skew 10 20 ns per Figure 4, t SKEW = | tDPLH - tDPHL| RS-485 RECEIVER DC Characteristics Inputs Common Mode Range –7.0 +12.0 Volts Receiver Sensitivity ±0.2 ±0.3 Volts –7V ≤ V CM ≤ +12V Input Impedance 12 15 kΩ –7V ≤ V CM ≤ +12V AC Characteristics Maximum Data Rate 10 Mbps Propagation Delay See Figures 2 & 6 t PHL 130 200 ns R DIFF=54Ω, CL1=CL2=100pF t PLH 130 200 ns R DIFF=54Ω, CL1=CL2=100pF Differential Receiver Skew 10 20 ns t SKEW = | tPLH – tPHL |; RDIFF=54Ω, C L1=CL2=100pF ENABLE TIMING RS-485 Driver Enable Time See Figures 3 & 5 Enable to Low 90 150 ns C L=15pF, S1 Closed Enable to High 90 150 ns C L=15pF, S2 Closed Disable Time See Figures 3 & 5 Disable From Low 80 120 ns C L=15pF, S1 Closed Disable From High 80 120 ns C L=15pF, S2 Closed POWER REQUIREMENTS Supply Voltage V CC +4.75 +5.25 Volts Supply Current I CC No Load (T x Disabled) 10 15 mA SEL_A ➨ SEL_D = "0001" No Load (RS-232 Mode) 15 30 mA SEL_A ➨ SEL_D = "0000" No Load (RS-485 Mode) 7 20 mA SEL_A ➨ SEL_D = "1100" ENVIRONMENTAL Operating Temperature Commercial (..C..) 0 +70 °C Industrial (..E..) –40 +85 °C Storage Temperature –65 +150 °C |
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