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SP487ES Datasheet(PDF) 4 Page - Sipex Corporation |
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SP487ES Datasheet(HTML) 4 Page - Sipex Corporation |
4 / 7 page SP486/487 Quad RS-485/RS-422 Line Drivers © Copyright 2000 Sipex Corporation 4 PINOUT — SP487 1 2 3 4 SP487 DI1 DO1A DO1B EN1/EN2 DO2B DO2A DI2 GND VCC DI4 DO4A DO4B EN3/EN4 DO3B DO3A DI3 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 Pin 16 — Supply Voltage V CC — 4.75V ≤ VCC ≤ 5.25V. SP487 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 1/EN2 — Driver 1 and 2 Output Enable. Please refer to SP487 Truth Table (2). Pin 5 — DO 2B — 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. INPUT ENABLES OUTPUTS DI EN EN OUTA OUTB HH X H L LH X L H HX L H L LX L L H X L H Hi–Z Hi–Z Table 1. SP486 Truth Table INPUT ENABLES OUTPUTS DI EN1/EN2 or EN3/EN4 OUTA OUTB HHH L LH L H X L Hi–Z Hi–Z Table 2. SP487 Truth Table Pin 11 — DO 3B — Driver 3 output B. Pin 12 — EN 3/EN4 — Driver 3 and 4 Output Enable. Please refer to SP487 Truth Table (2). 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. Pin 16 — Supply Voltage V CC — 4.75V ≤ VCC ≤ 5.25V. FEATURES… The SP486 and SP487 are low–power quad differ- ential line drivers meeting RS-485 and RS-422 standards. The SP486 features active high and active low common driver enable controls; the SP487 provides independent, active high driver enable controls for each pair of drivers. The driver outputs are short–circuit limited to 200mA. Data rates up to 10Mbps are supported. Both are avail- able in 16–pin plastic DIP and SOIC packages. |
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