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SP487CT Datasheet(PDF) 3 Page - Sipex Corporation |
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SP487CT Datasheet(HTML) 3 Page - Sipex Corporation |
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3 / 7 page  3 SP486/487 Quad RS-485/RS-422 Line Drivers © Copyright 2000 Sipex Corporation PINOUT — SP486 1 2 3 4 SP486 DI1 DO1A DO1B EN DO2B DO2A DI2 GND VCC DI4 DO4A DO4B EN DO3B DO3A DI3 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 A B RDIFF CL1 CL2 EN EN DI DRIVER Figure 2. Driver Timing Test VOC VDO A B R R Figure 1. Driver DC Test Load S1 OUTPUT UNDER TEST S2 VCC 500 ohms CL Figure 3. Driver Timing Test Load SP486 PINOUT Pin 1 — DI 1 — Driver 1 Input — If Driver 1 output is enabled,logic0onDI 1 forces driver output DO1A low and DO 1B high. A logic 1 on DI1 with Driver 1 output enabled forces driver DO 1A high and DO1B low. Pin 2 — DO 1A — Driver 1 output A. Pin 3 — DO 1B — Driver 1 output B. Pin 4 — EN — Driver Output Enable. Please refer to SP486 Truth Table (1). Pin 5 — DO2B — Driver 2 output B. Pin 6 — DO 2A — Driver 2 output A. Pin 7 — DI 2 — Driver 2 Input — If Driver 2 output is enabled,logic0onDI 2 forces driver output DO2A low and DO 2B high. A logic 1 on DI2 with Driver 2 output enabled forces driver DO 2A high and DO2B low. Pin 8 — GND — Digital Ground. Pin 9 — DI 3 — Driver 3 Input — If Driver 3 output is enabled,logic0onDI 3 forces driver output DO3A low and DO 3B high. A logic 1 on DI3 with Driver 3 output enabled forces driver DO 3A high and DO3B low. Pin 10 — DO 3A — Driver 3 output A. Pin 11 — DO 3B — Driver 3 output B. Pin 12 — EN — Driver Output Disable. Please refer to SP486 Truth Table (1). Pin 13 — DO 4B — Driver 4 output B. Pin 14 — DO 4A — Driver 4 output A. Pin 15 — DI 4 — Driver 4 Input — If Driver 4 output is enabled, logic 0 on DI 4 forces driver output DO4A low and DO 4B high. A logic 1 on DI4 with Driver 3 output enabled forces driver DO 4A high and DO4B low. |
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