10
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
*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.
RECOMMENDED OPERATING CONDITIONS
Temperature
Min.
0
°
C
–40
°
C
–55
°
C
Max.
+70
°
C
+85
°
C
+125
°
C
3855 PGM T02.1
Commercial
Industrial
Military
Supply Voltage
Limits
5V
±
10%
X28C256
3855 PGM T03.1
Notes:
(1) Typical values are for T
A
= 25
°
C and nominal supply voltage and are not tested
(2) I
SB2
max. of 200
μ
A 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.
D.C. OPERATING CHARACTERISTICS
(over recommended operating conditions, unless otherwise specified)
Limits
Typ.
(1)
Symbol
Parameter
Min.
Max.
Units
Test Conditions
I
CC
V
CC
Current (Active)
(TTL Inputs)
30
60
mA
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
V
CC
Current (Standby)
(TTL Inputs)
V
CC
Current (Standby)
(CMOS Inputs)
1
2
mA
I
SB2(2)
200
500
μ
A
I
LI
I
LO
V
lL(3)
V
IH(3)
V
OL
V
OH
Input Leakage Current
Output Leakage Current
Input LOW Voltage
Input HIGH Voltage
Output LOW Voltage
Output HIGH Voltage
10
10
0.8
μ
A
μ
A
V
V
V
V
–1
2
V
CC
+ 1
0.4
I
OL
= 2.1mA
I
OH
= –400
μ
A
2.4
3855 PGM T04.2