AS7C256 查看數據表（PDF） - Alliance Semiconductor
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AS7C256 Datasheet PDF : 8 Pages
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AS7C256
AS7C256L
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Input Voltage
*VIL min = –3.0V for pulse width less than tRC/2.
Symbol
Min
Typ
VCC
4.5
5.0
GND
0.0
0.0
VIH
2.2
–
VIL
–0.5*
–
(Ta = 0°C to +70°C)
Max
Unit
5.5
V
0.0
V
VCC+1
V
0.8
V
DC OPERATING CHARACTERISTICS1
(VCC = 5V±10%, GND = 0V, Ta = 0°C to +70°C)
Parameter
Symbol Test Conditions
Input Leakage
Current
|ILI|
Output Leakage
Current
|ILO|
Operating Power
Supply Current
ICC
VCC = Max,
Vin = GND to VCC
CE = VIH, VCC = Max,
Vout = GND to VCC
CE = VIL, f = fmax,
Iout = 0 mA
Standby
ISB
Power Supply
Current
ISB1
Output Voltage VOL
VOH
CE = VIH, f = fmax
CE > VCC–0.2V, f = 0,
Vin ≤ 0.2V or
Vin ≥ VCC–0.2V
IOL = 8 mA, VCC = Min
IOH = –4 mA, VCC = Min
-10
-12
-15
-20
-25
-35
Min Max Min Max Min Max Min Max Min Max Min Max Unit
– 1 – 1 – 1 – 1 – 1 – 1 µA
– 1 – 1 – 1 – 1 – 1 – 1 µA
– 120 – 115 – 110 – 100 – 90 – 80 mA
L – 115 – 110 – 105 – 95 – 85 – 75 mA
– 45 – 40 – 30 – 30 – 25 – 25 mA
L – 40 – 35 – 25 – 25 – 20 – 20 mA
– 2.0 – 2.0 – 2.0 – 2.0 – 2.0 – 2.0 mA
L – 0.5 – 0.5 – 0.5 – 0.5 – 0.5 – 0.5 mA
– 0.4 – 0.4 – 0.4 – 0.4 – 0.4 – 0.4 V
2.4 – 2.4 – 2.4 – 2.4 – 2.4 – 2.4 – V
CAPACITANCE2
Parameter
Input Capacitance
I/O Capacitance
Symbol
CIN
CI/O
(f = 1 MHz, Ta = Room Temperature, VCC = 5V)
Signals
Test Conditions
Max
Unit
A, CE, WE, OE
Vin = 0V
5
pF
I/O
Vin = Vout = 0V
7
pF
3
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