參數(shù)資料
型號: intel i387
廠商: Intel Corp.
英文描述: Military I387 Math Coprocessor(軍用I387數(shù)學協(xié)處理器)
中文描述: 軍事I387數(shù)學協(xié)處理器(軍用I387數(shù)學協(xié)處理器)
文件頁數(shù): 30/41頁
文件大?。?/td> 457K
代理商: INTEL I387
MILITARY i387
TM
MATH COPROCESSOR
5.2 DC Characteristics
(Over Specified Operating Conditions)
Table 5.2. DC Specifications
Symbol
Parameter
Min
Max
Units
Comments
V
IL
V
IH
V
CL
V
CH
V
OL
V
OH
I
CC
Input LO Voltage
Input HI Voltage
386CLK2 Input LO Voltage
386CLK2 Input HI Voltage
Output LO Voltage
Output HI Voltage
Power Supply Current
b
0.3
2.0
b
0.3
3.7
a
0.8
V
V
V
V
V
V
(Note 1)
(Note 1)
V
CC
a
0.3
a
0.8
V
CC
a
0.3
0.45
(Note 2)
(Note 3)
387CLK2
e
32 MHz
(4)
387CLK2
e
40 MHz
(4)
387CLK2
e
50 MHz
(4)
0V
s
V
IN
s
V
CC
0.45V
s
V
O
s
V
CC
fc
e
1 MHz
fc
e
1 MHz
fc
e
1 MHz
2.4
150 (typical)
190 (typical)
250 (typical)
250
310
390
g
15
g
15
10
12
20
mA
I
LI
I
LO
C
IN
C
O
C
CLK
Input Leakage Current
I/O Leakage Current
Input Capacitance
I/O or Output Capacitance
Clock Capacitance
m
A
m
A
pF
pF
pF
NOTES:
1. This parameter is for all inputs, including 387CLK2 but excluding 386CLK2.
2. This parameter is measured at I
OL
as follows:
data
e
4.0 mA
READYO
e
2.5 mA
ERROR, BUSY, PEREQ
e
2.5 mA
3. This parameter is measured at I
OH
as follows:
data
e
1.0 mA
READYO
e
0.6 mA
ERROR, BUSY, PEREQ
e
0.6 mA
4. I
CC
is measured at steady state, maximum capacitive loading on the outputs, and worst-case DC level at the inputs;
386CLK2 at the same frequency as 387CLK2.
30
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