80387DXRPQS View Datasheet(PDF) - MAXWELL TECHNOLOGIES

Part Name

Description

Manufacturer

80387DXRPQS

Math Coprocessor

MAXWELL TECHNOLOGIES 

Math Coprocessor

80387DX

TABLE 8. 80387DX TIMING REQUIREMENTS OF THE BUS INTERFACE UNIT (OUTPUT TRIP LEVEL = 1.5V)

(VCC = 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

t1

ns

31

125

25

125

20

125

386CLK2 High Time

-16

-20

-25

At 2.0V

t2a

ns

9

--

8

--

7

--

386CLK2 High Time1

-16

-20

-25

At 3.7V

t2b

ns

5

--

5

--

4

--

386CLK2 Low Time

-16

-20

-25

386CLK2 Low Time1

-16

-20

-25

386CLK2 Fall Time1

-16

-20

-25

At 2V

At 0.8V

At 3.7V to 0.8V

t3a

ns

9

--

8

--

7

--

t3b

ns

7

--

6

--

5

--

t4

ns

--

8

--

8

--

7

386CLK2 Rise Time1

-16

-20

-25

At 0.8V to 3.7V

t5

ns

--

8

--

8

--

7

386 CLK2/387CLK2 Ratio

--

10/16

14/10

--

READYO Out Delay

-16

-20

-25

CL = 50 pF

t7

ns

4

34

3

31

3

24

PEREQ, ERROR Out Delay

-16

-20

-25

CL = 50 pF

t7

ns

5

34

5

34

4

33

BUSY Out Delay

-16

-20

-25

CL = 50 pF

t7

ns

5

34

5

29

4

29

05.07.02 REV 1

All data sheets are subject to change without notice 5

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