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SP331CT Datasheet(PDF) 7 Page - Sipex Corporation |
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SP331CT Datasheet(HTML) 7 Page - Sipex Corporation |
7 / 13 page Date: 03-04-05 Programmable Dual RS-232/RS-485 Transceiver © Copyright 2005 Sipex Corporation 7 SEL A TTL/CMOS TTL/CMOS TTL/CMOS 0.1µF 0.1µF C1+ C1- C2+ C2- 1 SEL B 2 +5V VCC 5 GND 8 9 11 12 13 19 20 22 24 26 27 28 TTL/CMOS TTL/CMOS TTL/CMOS TTL/CMOS T1 T3 R1 RS-485 RS-485 RS-485 0V 0.1µF 0.1µF V+ V- 0V SEL C RS-485 RS-485 RS-485 4 6 7 10 14 15 16 23 25 3 RI1 RI2 TX3 TX4 TX1 TX2 TI1 TI2 TI3 TI4 RX1 RX2 TTL/CMOS 21 R3 17 18 RI4 RI3 RX3 RX4 15KΩ 15KΩ 15KΩ 15KΩ 400KΩ Vcc 400KΩ Vcc SEL D RS-485 RS-485 +5V +5V +5V GND TTL/CMOS TTL/CMOS TTL/CMOS TTL/CMOS 0V 0.1µF 0.1µF VCC V+ V- 0V SEL C RS-232 TTL/CMOS TTL/CMOS TTL/CMOS TTL/CMOS T1 T2 T3 T4 TX1 TX2 TX3 TX4 TI1 TI2 TI3 TI4 RI1 RI2 RI3 RI4 RX1 RX2 RX3 RX4 1 3 4 5 6 7 8 10 0.1µF 0.1µF C1+ C1- C2+ C2- 9 11 12 13 14 15 16 17 18 19 20 21 22 23 SEL B 2 SEL A 24 25 26 27 28 R1 R2 R3 R4 5KΩ 5KΩ 5KΩ 5KΩ 400KΩ Vcc 400KΩ Vcc 400KΩ Vcc 400KΩ Vcc RS-232 RS-232 RS-232 RS-232 RS-232 RS-232 RS-232 SEL D 0V 0V SP331 SP331 Figure 10. Typical Operating Circuit TI4 SEL_B TX4 TX3 VCC TX1 TX2 GND C1+ V+ (VDD) C2+ C1– C2– V– (VSS) TI3 TI2 TI1 SEL_C SEL_A SEL_D RX4 RX3 RX2 RX1 RI4 RI3 RI2 RI1 28 27 26 25 24 23 22 21 20 19 18 17 16 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Figure 9. SP331 Pinout |
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