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SP339EER1-TR Datasheet(PDF) 10 Page - Exar Corporation |
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SP339EER1-TR Datasheet(HTML) 10 Page - Exar Corporation |
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10 / 23 page  SP339E 10 RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION REV. 1.0.4 TIMING CHARACTERISTICS (Continued) UNLESS OTHERWISE NOTED: VCC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1 F; TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = +25°C. SYMBOL PARAMETERS MIN. TYP. MAX. UNITS CONDITIONS RS-485/RS-422, DATA RATE = 250kbps (SLEW = Vcc), ONE TRANSMITTER SWITCHING Maximum Data Rate 250 kbps RL = 54 CL = 50pF tRPHL, tRPLH Receiver Propagation Delay 50 150 ns CL = 15pF, Figure 11 tRPHL-tRPLH Receiver Propagation Delay Skew 20 ns tDPHL, tDPLH Driver Propagation Delay 500 1000 ns RL = 54 CL = 50pF, Figure 12 tDPHL-tDPLH Driver Propagation Delay Skew 100 ns tDR, tDF Driver Rise and Fall Time 300 650 1200 ns tRZH, tRZL Receiver Output Enable Time 200 ns CL = 15pF, Figure 13 tRHZ, tRLZ Receiver Output Disable Time 200 ns tDZH, tDZL Driver Output Enable Time 1000 ns RL = 500 CL = 50pF, Figure 14 tDHZ, tDLZ Driver Output Disable Time 200 ns RS-485/RS-422, DATA RATE = 20Mbps (SLEW = 0V), ONE TRANSMITTER SWITCHING Maximum Data Rate 20 Mbps RL = 54 CL = 50pF tRPHL, tRPLH Receiver Propagation Delay 50 150 ns CL = 15pF, Figure 11 tRPHL-tRPLH Receiver Propagation Delay Skew 10 ns tDPHL, tDPLH Driver Propagation Delay 30 100 ns RL = 54 CL = 50pF, Figure 12 tDPHL-tDPLH Driver Propagation Delay Skew 10 ns tDR, tDF Driver Rise and Fall Time 10 20 ns tRZH, tRZL Receiver Output Enable Time 200 ns CL = 15pF, Figure 13 tRHZ, tRLZ Receiver Output Disable Time 200 ns tDZH, tDZL Driver Output Enable Time 200 ns RL = 500 CL = 50pF, Figure 14 tDHZ, tDLZ Driver Output Disable Time 200 ns |
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