Math Coprocessor
T
ABLE
3. D
ELTA
L
IMITS
P
ARAMETER
I
LI
I
LO
I
CC
CLK2 = 32 MHz
I
CC
CLK2 = 50 MHz
V
ARIATION
± 1.5 µ A
±1.5 µ A
±25 mA
±39 mA
80387DX
T
ABLE
4. R
ECOMMENDED
O
PERATING
C
ONDITIONS
P
ARAMETER
Supply Voltage
Input Low Voltage
Input High Voltage
Operating Temperature
S
YMBOL
V
CC
V
IL
V
IH
T
A
M
IN
4.75
-0.3
2.0
-55
M
AX
5.25
0.8
V
CC
+0.3
125
U
NIT
V
V
V
°C
Memory
T
ABLE
5. 80387DX DC E
LECTRICAL
C
HARACTERISTICS
(V
CC
= 4.75V
TO
5.25V; T
A
= -55
TO
+125°C,
UNLESS OTHERWISE SPECIFIED
)
P
ARAMETER
Input Low Voltage
Input High Voltage
386 CLK2 Input Low Voltage
386 CLK2 Input High Voltage
Output Low Voltage
Output High Voltage
S
YMBOL
V
IL1
V
IH1
V
CL
V
CH
V
OL
V
OH
I
OL
= 4 mA, D0-D31, I
OL
= 2.5 mA
READYO , ERROR, BUSY, PEREQ
I
OH
= -1 mA, D0-D31, I
OH
= -0.6 mA
READYO, READYO, ERROR, BUSY,
PEREQ
0V < V
IN
< V
CC
0.45V < V
OUT
< V
CC
CLK2 = 32 MHz
CLK2 = 40 MHz
CLK2 = 50 MHz
2
F
C
= 1 MHz
F
C
= 1 MHz
F
C
= 1 MHz
--
--
--
--
--
--
--
T
EST
C
ONDITIONS
M
IN
--
--
2.0
--
3.7
--
2.4
M
AX
0.8
--
--
0.8
--
0.45
--
U
NIT
V
V
V
V
V
V
Input Leakage Current
Output Leakage Current
Power Supply Current
I
LI
I
LO
I
CC
±15
±15
250
310
390
10
12
20
µA
µA
mA
Input Capacitance
3
Output Capacitance
3
CLK2 Capacitance
3
C
IN
C
O
C
CLK
pF
pF
pF
1. This parameter is for all inputs, including 387CLK2 but excluding 386CLK2.
2. Icc 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.
3. Guaranteed By Design
05.07.02 REV 1
All data sheets are subject to change without notice
3
©2002 Maxwell Technologies
All rights reserved.
MAXWELL [ MAXWELL TECHNOLOGIES ]
