Truth table, Dc characteristics – Rainbow Electronics W24257 User Manual
Page 2
W24257
- 2 -
TRUTH TABLE
CS
OE
WE
MODE
I/O1
−
I/O8
V
DD
CURRENT
H
X
X
Not Selected
High Z
I
SB
, I
SB
1
L
H
H
Output Disable
High Z
I
DD
L
L
H
Read
Data Out
I
DD
L
X
L
Write
Data In
I
DD
DC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER
RATING
UNIT
Supply Voltage to V
SS
Potential
-0.5 to +7.0
V
Input/Output to V
SS
Potential
-0.5 to V
DD
+0.5
V
Allowable Power Dissipation
1.0
W
Storage Temperature
-65 to +150
°
C
Operating Temperature
0 to +70
°
C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of the
device.
Operating Characteristics
(V
DD
= 5V
±
10%, V
SS
= 0V, T
A
= 0 to 70
°
C)
PARAMETER
SYM.
TEST CONDITIONS
MIN.
TYP.
MAX.
UNIT
Input Low Voltage
V
IL
-
-0.5
-
+0.8
V
Input High Voltage
V
IH
-
+2.2
-
V
DD
+0.5
V
Input Leakage Current
I
LI
V
IN
= V
SS
to V
DD
-2
-
+2
µ
A
Output Leakage
Current
I
LO
V
I/O
= V
SS
to V
DD,
CS = V
IH
(min.) or OE = V
IH
(min.) or
WE = V
IL
(max.)
-2
-
+ 2
µ
A
Output Low Voltage
V
OL
I
OL
= +4.0 mA
-
-
0.4
V
Output High Voltage
V
OH
I
OH
= -1.0 mA
2.4
-
-
V
Operating Power
I
DD
CS = V
IL
(min.),
I/O = 0 mA
70
-
-
80
mA
Supply Current
Cycle = min.,
Duty = 100%
100
-
-
70
mA
Standby Power
Supply Current
I
SB
CS = V
IH
(min.)
Cycle = min., Duty = 100%
-
-
3
mA
I
SB1
CS
≥
V
DD
-0.2V
LL
-
-
50
µ
A
L
-
-
100
µ
A
Note: Typical characteristics are at V
DD
= 5V, T
A
= 25
°
C.