X28C256
ABSOLUTE MAXIMUM RATINGS*
Temperature under Bias
X28C256 ...................................... –10°C to +85°C
X28C256I, X28C256M ............... –65°C to +135°C
Storage Temperature ....................... –65°C to +150°C
Voltage on any Pin with
Respect to V
SS .......................................
–1V to +7V
D.C. Output Current ............................................. 5mA
Lead Temperature
(Soldering, 10 seconds) .............................. 300°C
RECOMMENDED OPERATING CONDITIONS
Temperature
Commercial
Industrial
Military
Min.
0°C
–40°C
–55°C
Max.
+70°C
+85°C
+125°C
3855 PGM T02.1
*COMMENT
Stresses above those listed under “Absolute Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and the functional operation of
the device at these or any other conditions above those
indicated in the operational sections of this specification is
not implied. Exposure to absolute maximum rating condi-
tions for extended periods may affect device reliability.
Supply Voltage
X28C256
Limits
5V
±10%
3855 PGM T03.1
D.C. OPERATING CHARACTERISTICS
(over recommended operating conditions, unless otherwise specified)
Limits
Symbol
I
CC
Parameter
V
CC
Current (Active)
(TTL Inputs)
V
CC
Current (Standby)
(TTL Inputs)
V
CC
Current (Standby)
(CMOS Inputs)
Input Leakage Current
Output Leakage Current
Input LOW Voltage
Input HIGH Voltage
Output LOW Voltage
Output HIGH Voltage
Min.
Typ.
(1)
30
Max.
60
Units
mA
Test Conditions
CE
=
OE
= V
IL
,
WE
= V
IH
,
All I/O’s = Open, Address
Inputs = .4V/2.4V @ f = 5MHz
CE
= V
IH
,
OE
= V
IL
All I/O’s = Open, Other Inputs = V
IH
CE
= V
CC
– 0.3V,
OE
= V
IL
All I/O’s = Open,
Other Inputs = V
CC
– 0.3V
V
IN
= V
SS
to V
CC
V
OUT
= V
SS
to V
CC
,
CE
= V
IH
I
SB1
I
SB2(2)
1
200
2
500
mA
µA
µA
µA
V
V
V
V
I
LI
I
LO
V
lL(3)
V
IH(3)
V
OL
V
OH
–1
2
2.4
10
10
0.8
V
CC
+ 1
0.4
I
OL
= 2.1mA
I
OH
= –400µA
3855 PGM T04.2
Notes:
(1) Typical values are for T
A
= 25°C and nominal supply voltage and are not tested
(2) I
SB2
max. of 200µA available from Xicor. Contact local sales office and reference X28C256 C7125.
(3) V
IL
min. and V
IH
max. are for reference only and are not tested.
10
XICOR [ XICOR INC. ]
