Intel MCS48 User Manual page 326

8255A/8255A-5
ABSOLUTE MAXIMUM
RATINGS'
Ambient
Temperature Under
Bias 0°C to
70°C
Storage Temperature
-65°C
to
+150°C
Voltage on
Any
Pin
With
Respect
to
Ground
-0.5V
to
+7V
Power
Dissipation
1
Watt
*COMMENT:
Stresses
above
those
listed
under "Absolute
Maximum
Ratings"
may
cause permanent damage
to the
device.
This
is
a
stress rating
only
and
functional opera-
tion
of
the device at these or any other conditions
above
those indicated
in the operational sections of
this specifi-
cation
is
not
implied. Exposure
to
absolute
maximum
rating conditions
for
extended
periods
may
affect device
reliability.
D.C.
CHARACTERISTICS
T A
= 0°C
to 70°C,
V
cc
= +5V
±5%;
GND
=
0V
SYMBOL
PARAMETER
MIN.
MAX. UNIT
TEST CONDITIONS
V|L
Input
Low
Voltage -0.5
0.8
V
V,H Input High Voltage
2.0
v
C c
V
Vol
(DB)
Output Low
Voltage (Data Bus) 0.45
V
Iol =
2.5mA
Vol(PER) Output Low
Voltage
(Peripheral Port) 0.45
V Iol =
1.7mA
Voh(DB) Output
High Voltage
(Data Bus) 2.4
V
lOH =
-400mA
Voh(PER) Output
High Voltage
(Peripheral Port)
2.4
V
Ioh = -200/uA
IdarI
1
!
Darlington Drive Current -1.0 -4.0
mA
R
E
XT
= 750ft;V
E
xT=1-5V
cc Power Supply
Current
120
mA
IlL
Input
Load
Current
±10
A<A
Vin =
V
C c
to
0V
'OFL
Output
Float
Leakage
±10
fiA
Vqut
=
V
CC
to
0V
Note
1
:
Available on
any 8
pins
from
Port B and
C.
CAPACITANCE
T A
= 25°C;
V
cc
=
GND
= 0V
SYMBOL
PARAMETER
MIN. TYP.
MAX. UNIT TEST CONDITIONS
C
IN
Input Capacitance 10
pF
fc=
1MHz
C|/o
I/O Capacitance
20 pF Unmeasured
pins
returned to
GND
X
750n
-^W—
— —
o V
EX T*
100pF
*V
E
xt is
set at
various voltages during testing
to
guarantee
the specification.
Figure
24.
Test
Load
Circuit
(for
dB)
8-36
00744A