Truth table, Dc characteristics, Operating characteristics – Rainbow Electronics W24256 User Manual
Page 2
Preliminary W24256
- 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
°
C 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
+1
V
Input Leakage Current
I
LI
V
IN
= V
SS
to V
DD
-5
-
+5
µ
A
Output Leakage Current
I
LO
VI/O = V
SS
to V
DD
, CS = V
IH
(min.) or OE = V
IH
(min.) or
WE = V
IL
(max.)
-5 - +5
µ
A
Output Low Voltage
V
OL
I
OL
= +2.1 mA
-
-
0.4
V
Output High Voltage
V
OH
I
OH
= -1.0 mA
2.4
-
-
V
Operating Power
Supply Current
I
DD
CS = V
IL
(max.), I/O = 0 mA ,
Cycle = min , Duty = 100 %
- - 60
mA
Standby Power Supply
Current
I
SB
CS = V
IH
(min.), Cycle = min.
Duty = 100%
- - 3 mA
I
SB1
CS
≥
V
DD
-0.2V
L - - 100
µ
A
LL -
-
50
µ
A
Note: Typical parameter is measured under ambient temperature T
A
= 25
°
C and V
DD
= 5V.