Truth table, Dc characteristics – Rainbow Electronics W24L257 User Manual
Page 2
Preliminary W24L257
- 2 -
TRUTH TABLE
CS
OE
WE
MODE
I/O1
−I/O8
V
DD
CURRENT
H X X Not
Selected
High
Z
I
SB
, I
SB1
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 +4.6
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
LL
0 to 70
°C
LE
-20 to 85
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
= 3.0V to 3.6V; V
SS
= 0V; T
A
(
°C) = 0 to 70 for LL, -20 to 85 for LE)
PARAMETER SYM. TEST CONDITIONS
MIN.
MAX.
UNIT
Input Low Voltage
V
IL
- -0.5
+0.6
V
Input High Voltage
V
IH
- +2.0
V
DD
+0.5
V
Input Leakage Current
I
LI
VIN = V
SS
to V
DD
-1
+1
µA
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.)
-1
+1
µA
Output Low Voltage
V
OL
IOL = +2.1 mA
-
0.4
V
Output High Voltage
V
OH
IOH = -1.0 mA
2.2
-
V
Operating Power Supply
Current
I
DD
CS = V
IL
(max.) and
I/O = 0 mA,
Cycle = min. Duty = 100%
-
35
mA