CMOS 256K (32K × 8) Static RAM
LH52256C/CH
TRUTH TABLE
CE
WE
OE
MODE
I/O1 - I/O8
SUPPLY CURRENT
NOTE
H
L
L
X
H
H
L
X
L
Standby
Read
High impedance
Data output
Standby (ISB
)
1
1
1
1
Active (ICC
Active (ICC
Active (ICC
)
)
)
H
X
Output disable
Write
High impedance
Data input
L
NOTE:
1. X = Don’t care, L = Low, H = High
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATING
UNIT
NOTE
Supply voltage
VCC
VIN
–0.5 to +7.0
–0.5 to VCC + 0.5
0 to +70
V
V
1
Input voltage
1, 2
Operating temperature
TOPR
°C
°C
Storage temperature
TSTG
–65 to +150
NOTES:
1. The maximum applicable voltage on any pin with respect to GND.
2. Undershoot of -3.0 V is allowed width of pulse below 50 ns.
RECOMMENDED DC OPERATING CONDITIONS (TA = 0°C to +70°C)
PARAMETER
SYMBOL
MIN.
TYP.
MAX.
UNIT
NOTE
Supply voltage
VCC
4.5
5.0
5.5
V
VIH
2.2
VCC + 0.5
0.8
V
Input voltage
VIL
–0.5
V
1
NOTE:
1. Undershoot of -3.0 V is allowed width of pulse below 50 ns.
3
ETC [ ETC ]
