![](http://datasheet.mmic.net.cn/100000/WMS128K8L-25CMA_datasheet_3246689/WMS128K8L-25CMA_2.png)
2
White Electronic Designs Corporation (602) 437-1520 www.whiteedc.com
White Electronic Designs
WMS128K8-XXX
September 2002
Rev. 5
White Electronic Designs Corp. reserves the right to change products or specications without notice.
DC CHARACTERISTICS
VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C
Parameter
Symbol
Conditions
-15
-17
-20
-25
-35
-45
-55
Units
Min Max Min Max Min Max Min Max Min Max Min Max Min Max
Input Leakage Current
ILI
VCC = 5.5, VIN = GND to VCC
10
μA
Output Leakage Current
ILO
CS# = VIH, OE# = VIH, VOUT = GND to VCC
10
μA
Operating Supply Current
ICC
CS# = VIL, OE# = VIH, f = 5MHz, VCC = 5.5
150
150 mA
Standby Current
ISB
CS# = VIH, OE# = VIH, f = 5MHz, VCC = 5.5
20
15
mA
Output Low Voltage
VOL
IOL = 2.1mA, VCC = 4.5
0.4
V
Output High Voltage
VOH
IOH = -1.0mA, VCC = 4.5
2.4
V
NOTE: DC test conditions: VIH = VCC -0.3V, VIL = 0.3V
ABSOLUTE MAXIMUM RATINGS
Parameter
Symbol
Min
Max
Unit
Operating Temperature
TA
-55
+125
°C
Storage Temperature
TSTG
-65
+150
°C
Signal Voltage Relative to GND
VG
-0.5
VCC+0.5
V
Junction Temperature
TJ
150
°C
Supply Voltage
VCC
-0.5
7.0
V
RECOMMENDED OPERATING CONDITIONS
Parameter
Symbol
Min
Max
Unit
Supply Voltage
VCC
4.5
5.5
V
Input High Voltage
VIH
2.2
VCC + 0.3
V
Input Low Voltage
VIL
-0.5
+0.8
V
Operating Temp. (Mil.)
TA
-55
+125
°C
TRUTH TABLE
CS#
OE#
WE#
Mode
Data I/O
Power
H
X
Standby
High Z
Standby
L
H
Read
Data Out
Active
L
X
L
Write
Data In
Active
L
H
Out Disable
High Z
Active
CAPACITANCE
TA = +25°C
Parameter
Symbol
Condition
Package
Speed (ns)
Max
Unit
Input capacitance
CIN
VIN = 0V, f = 1.0MHz
32 Pin CSOJ, DIP, Flat Pack Evolutionary
15 to 55
20
pF
36 Pin Flat Pack and
15 to 25
12
pF
32 Pin CSOJ Revolutionary
35 to 55
20
pF
Output capicitance
COUT
VOUT = 0V, f = 1.0MHz
32 Pin CSOJ, DIP, Flat Pack Evolutionary
15 to 55
20
pF
36 Pin Flat Pack and
15 to 55
12
pF
32 Pin CSOJ Revolutionary
35 to 55
20
pF
32 Pin CLCC
15 to 55
15
pF
This parameter is guaranteed by design but not tested.