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80387DX Datasheet(PDF) 5 Page - Maxwell Technologies |
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80387DX Datasheet(HTML) 5 Page - Maxwell Technologies |
5 / 17 page 5 05.07.02 REV 1 All data sheets are subject to change without notice ©2002 Maxwell Technologies All rights reserved. Math Coprocessor 80387DX TABLE 8. 80387DX TIMING REQUIREMENTS OF THE BUS INTERFACE UNIT (OUTPUT TRIP LEVEL = 1.5V) (V CC = 4.75V TO 5.25V; TA = -55 TO +125° C, UNLESS OTHERWISE SPECIFIED) PARAMETER CONDITIONS SYMBOL MIN MAX UNIT 386CLK2 Period1 -16 -20 -25 At 2.0V t 1 31 25 20 125 125 125 ns 386CLK2 High Time -16 -20 -25 At 2.0V t 2a 9 8 7 -- -- -- ns 386CLK2 High Time1 -16 -20 -25 At 3.7V t 2b 5 5 4 -- -- -- ns 386CLK2 Low Time -16 -20 -25 At 2V t 3a 9 8 7 -- -- -- ns 386CLK2 Low Time1 -16 -20 -25 At 0.8V t 3b 7 6 5 -- -- -- ns 386CLK2 Fall Time1 -16 -20 -25 At 3.7V to 0.8V t 4 -- -- -- 8 8 7 ns 386CLK2 Rise Time1 -16 -20 -25 At 0.8V to 3.7V t 5 -- -- -- 8 8 7 ns 386 CLK2/387CLK2 Ratio -- 10/16 14/10 -- READYO Out Delay -16 -20 -25 C L = 50 pF t 7 4 3 3 34 31 24 ns PEREQ, ERROR Out Delay -16 -20 -25 C L = 50 pF t 7 5 5 4 34 34 33 ns BUSY Out Delay -16 -20 -25 C L = 50 pF t 7 5 5 4 34 29 29 ns |
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