28C16AT-20I/L データシートの表示（PDF） - Microchip Technology
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28C16AT-20I/L Datasheet PDF : 10 Pages
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28C16A
TABLE 1-3: READ OPERATION AC CHARACTERISTICS
AC Testing Waveform: VIH = 2.4V; VIL = 0.45V; VOH = 2.0V; Vol = 0.8V
Output Load:
1 TTL Load + 100pF
Input Rise and Fall Times: 20 ns
Ambient Temperature: Commercial (C): Tamb = 0°C to +70°0°C
Industrial (I): Tamb = -40°C to +85°C
Parameter
Sym
28C16A-15
Min Max
28C16A-20
Min Max
28C16A-25
Min Max
Units
Conditions
Address to Output Delay
tACC — 150 — 200 — 250 ns OE = CE = VIL
CE to Output Delay
tCE
— 150 — 200 — 250 ns OE = VIL
OE to Output Delay
tOE
—
70
—
80
— 100 ns CE = VIL
CE or OE High to Output Float tOFF
0
50
0
55
0
70
ns
Output Hold from CE or OE,
tOH
0
—
0
—
0
—
ns
whichever occurs first
Endurance
—
1M
—
1M
—
1M
— cycles 25°C, Vcc =
5.0V, Block
Mode (Note)
Note: This parameter is not tested but guaranteed by characterization. For endurance estimates in a specific appli-
cation, please consult the Total Endurance Model which can be obtained on our BBS or website.
FIGURE 1-1: READ WAVEFORMS
V IH
Address
V IL
Address Valid
V IH
CE
V IL
t CE(2)
V IH
OE
V IL
Data
V OH
V OL
V IH
WE
V IL
High Z
t OE(2)
t ACC
t OFF(1,3)
t OH
Valid Output
High Z
Notes: (1) t OFF is specified for OE or CE, whichever occurs first
(2) OE may be delayed up to t CE - t OE after the falling edge of CE without impact on t CE
(3) This parameter is sampled and is not 100% tested
2004 Microchip Technology Inc.
DS11125J-page 3
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