28C16ASLASHL datasheet(3/10 Pages) MICROCHIP

3 / 10 page

 2004 Microchip Technology Inc.

DS11125J-page 3

28C16A

TABLE 1-3:

READ OPERATION AC CHARACTERISTICS

FIGURE 1-1:

READ WAVEFORMS

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

28C16A-20

28C16A-25

Units

Conditions

Min

Max

Min

Max

Min

Max

Address to Output Delay

tACC

—

150

—

200

—

250

OE = CE = VIL

CE to Output Delay

tCE

—

150

—

200

—

250

OE = VIL

OE to Output Delay

tOE

—

100

CE = VIL

CE or OE High to Output Float

tOFF

050

070

Output Hold from CE or OE,

whichever occurs first

tOH

0—

Endurance

—

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.

Address

VIH

VIL

VIH

VIL

VIH

VIL

Data

VOH

VOL

VIH

VIL

Address Valid

High Z

Valid Output

tACC

(1) t OFF is specified for OE or CE, whichever occurs first

(2) OE may be delayed up to t

- t OE after the falling edge of CE without impact on t

(3) This parameter is sampled and is not 100% tested

High Z

tOH

tOFF(1,3)

Notes:

tOE(2)

tCE(2)

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