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