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8291
DEVICE ELECTRICAL CHARACTERISTICS
D.C. CHARACTERISTICS
TA
= O°C
to
70°C;
Vee = 5V ± 10%
Symbol
Parameter
Min.
VIL
Input
Low
Voltage
-0,5
VIH
Input
High
Voltage
2
VOL
Output
Low
Voltage
VOH
Output
High
Voltage
2.4
VOH-INT
Interrupt
Output
High Voltage
2.4
3,5
IlL
I
nput
Leakage
ILOL
Output
Leakage
Current
ILOH
Output
Leakage
Current
lee
Vee
Supply
Current
A.C. CHARACTERISTICS
Vee = 5V ± 10%,
Commercial:
TA
= O°C
to
70°C
Symbol
Parameter
Min.
tAR
Address
Stable
Before READ
0
tRA
Address
Hold
After
R8\5
0
tRR
READ
width
140
tAD
Address
Stable
to
Data Valid
tRD
READ
to
Data Valid
tRDF
Data Float
After
~
0
tAW
Address
Stable
Before
WRITE
0
tWA
Address
Hold
After
WRITE
0
tww
WRITE
Width
170
tDW
Data
Set Up
Time
to
the
Trailing
Edge
of
WRITE
150
tWD
Data
Hold
Time
After~
0
tAKRQ
DACKI
to
DREQI
tDKDA6
~I
to
Up
Data Valid
Notes:
1,
8080
System
CLm"x
= 100pF:
CLmin
=
15pF;
3 MHz clock,
2,
8085
System
CL
= 150pF; 4 MHz clock,
9-97
Max.
Unit
Test
Conditione
0,8
V
Vee+0,5 V
0.45 V IOL=2mA (4mA
for
TR1
pin)
V
IOH
= -400f.lA 1-150f.lA
for
SRQ
pin
I
V
IOH=-
4OO
f.l
A
V
IOH=-
5O
f.l
A
10
f.lA
VIN=OV
to
Vee
-10
f.lA
VOUT=0.45V
10
f.lA
Vour=Vee
180
mA
TA=O°C
Max.
Unit
nsecl
1
1
nsec
l11
nsec
l21
250 nsec
l11
100
nse(;1
2
1
60
121
nsec
nsecl
1
1
nsec
l11
nsec
l1
1
nsecl
1
1
130
nsec
200
nsec