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SP208ET Datasheet(PDF) 5 Page - Sipex Corporation |
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SP208ET Datasheet(HTML) 5 Page - Sipex Corporation |
5 / 15 page 5 REV: A DATE:12/03/2003 +5V High-Speed RS232 Transceivers © Copyright 2000 Sipex Corporation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 T3 OUT T1OUT T2OUT R2IN R2OUT T2IN T1IN R1OUT R1IN GND VCC C1+ V+ C1– T4 OUT R3IN R3OUT SHUTDOWN (SD) EN R4IN R4OUT T4IN T3IN R5OUT R5IN V– C2– C2+ PINOUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 T3 OUT T1OUT T2OUT R2IN R2OUT T2IN T1IN R1OUT R1IN GND VCC C1+ V+ C1– T4 OUT R3IN R3OUT SHUTDOWN (SD) EN R4IN R4OUT T4IN T3IN R5OUT R5IN V– C2– C2+ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 T3 OUT T1OUT T2OUT R2IN R2OUT T2IN T1IN R1OUT R1IN GND VCC C1+ V+ C1– T4 OUT R3IN R3OUT SHUTDOWN (SD) EN R4IN R4OUT T4IN T3IN R5OUT R5IN V– C2– C2+ ers active in the shutdown mode, unless dis- abled by the EN pin. Models with a “B” suffix are equipped with the WakeUp function. Models in the Series are available in 28–pin SO (wide) and SSOP (shrink) small outline pack- ages. Devices can be specified for commercial (0 °C to +70°C) and industrial/extended (–40°C to +85 °C) operating temperatures. FEATURES… The SP200 Series multi–channel RS-232 line transceivers provide a variety of configurations to fit most communication needs, especially those applications where ±12V is not available. All models in this Series feature low–power CMOS construction and Sipex proprietary on- board charge pump circuitry to generate the ±10V RS-232 voltage levels. The ability to use 0.1 µF charge pump capacitors saves board space and reduces circuit cost. Different models within the Series provide different driver/receiver com- binations to match any application requirement. The SP200, SP205, SP206, SP207B, SP211 and SP213 models feature a low–power shut- down mode, which reduces power supply drain to 1 µA. The WakeUp function keeps the receiv- THEORY OF OPERATION Charge–Pump The charge pump is a Sipex patented design (5,306,954) and uses a unique approach com- pared to older less–efficient designs. The charge pump still requires four external capacitors, but uses a four–phase voltage shifting technique to |
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