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SP337E Datasheet(PDF) 7 Page - Exar Corporation |
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SP337E Datasheet(HTML) 7 Page - Exar Corporation |
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7 / 18 page  SP337E 7 REV. 1.0.2 3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER RS-232 (SP337EB ONLY) DATA RATE = 250kbps, ONE TRANSMITTER SWITCHING Maximum Data Rate 250 kbps RL = 3kΩ, CL = 2500pF tPHL, tPLH Receiver Propagation Delay 100 ns CL = 150pF, Figures 20 and 21 ⏐tPHL-tPLH⏐ Receiver Skew 100 ns CL = 150pF, Figures 20 and 21 tPHL, tPLH Driver Propagation Delay 800 ⏐tPHL-tPLH⏐ Driver Skew 400 ns Receiver Output Enable time 400 ns Receiver Output Disable time 400 ns tTHL, tTLH Transition-Region Slew Rate from +3.0V to -3.0V or -3.0V to +3.0V 4 30 V/ μs Vcc = 3.3V, RL = 3kΩ to 7kΩ, CL = 150pF to 2500pF, Figures 18 and 19 RS-232 (SP337EU ONLY) DATA RATE = 1Mbps, ONE TRANSMITTER SWITCHING Maximum Data Rate 1 Mbps RL = 3kΩ, CL = 250pF tPHL, tPLH Receiver Propagation Delay 100 ns CL = 150pF, Figures 20 and 21 ⏐tPHL-tPLH⏐ Receiver Skew 100 ns CL = 150pF, Figures 20 and 21 tPHL, tPLH Driver Propagation Delay 250 ⏐tPHL-tPLH⏐ Driver Skew 150 ns Receiver Output Enable time 400 ns Receiver Output Disable time 400 ns tTHL, tTLH Transition-Region Slew Rate from +3.0V to -3.0V or -3.0V to +3.0V 50 V/ μs Vcc = 3.3V, RL = 3kΩ, CL = 150pF, Figures 18 and 19 RS-485/RS-422 (SP337EB and SP337EU) DATA RATE = 15Mbps, ONE TRANSMITTER SWITCHING Maximum Data Rate 15 20 Mbps RDIFF = 54Ω, CL = 50pF tDPHL, tDPLH Differential Output Propagation Delay Time 60 120 ns Figures 5 and 6 tR, tF Driver Rise and Fall Time 15 25 ns Figures 5 and 6 ⏐tDPHL- tDPLH⏐ Driver Propagation Delay Skew 10 ns Figures 5 and 6 tDZH, tDZL Driver Output Enable Time 400 ns Figures 7, 8, 9 and 10 tDHZ, tDLZ Driver Output Disable Time 400 ns Figures 7, 8, 9 and 10 tPHL, tPLH Receiver Propagation Delay 80 150 ns Figures 11 and 12 tZH Receiver Enable to Output High 100 200 ns Figures 13 and 14 tZL Receiver Enable to Output Low 100 200 ns Figures 13 and 15 tHZ Receiver Output High to Disable 100 200 ns Figures 13 and 16 tLZ Receiver Output Low to Disable 100 200 ns Figures 13 and 17 UNLESS OTHERWISE NOTED: VCC = +3.3V +/-5% OR +5.0V +/-5%, C1-C4 = 0.1 μF; TA = TMIN TO TMAX. TYPICAL VALUES ARE AT VCC = 3.3V, TA = +25OC. SYMBOL PARAMETERS MIN.TYP. MAX.UNITS CONDITIONS |
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