27C128 datasheet(3/12 Pages) MICROCHIP

3 / 12 page

DS11003K-page 3

27C128

TABLE 1-3:

READ OPERATION AC CHARACTERISTICS

FIGURE 1-1:

READ WAVEFORMS

AC Testing Waveform:

VIH = 2.4V and VIL = 0.45V; VOH = 2.0V VOL = 0.8V

Output Load:

1 TTL Load + 100 pF

Input Rise and Fall Times:

10 ns

Ambient Temperature:

Commercial:

Tamb =

0˚C to +70˚C

Industrial:

Tamb = -40˚C to +85˚C

Extended (Automotive):

Tamb = -40

°C to +125°C

Parameter

Sym

27C128-12 27C128-15 27C128-17 27C128-20 27C128-25

Units Conditions

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Address to Output Delay

tACC

—

120

—

150

—

170

—

200

—

250

CE=OE=VIL

CE to Output Delay

tCE

—

120

—

150

—

170

—

200

—

250

OE=VIL

OE to Output Delay

tOE

—

100

CE=VIL

CE or OE to O/P High

Impedance

tOFF

050050

055

Output Hold from

Address CE or OE,

whichever occurs ﬁrst

tOH

0—0—

0—

Address

VIH

VIL

VIH

VIL

VIH

VIL

Outputs

O0 - O7

VOH

VOL

Address Valid

tCE(2)

tOE(2)

High Z

Valid Output

tACC

(1) tOFF 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 tCE

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

High Z

tOH

tOFF(1,3)

Notes:

27C128 Datasheet(PDF) 3 Page - Microchip Technology

27C128 Datasheet(HTML) 3 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12

Datasheet Download

Link URL