Datasheet > 27LV256-30I/VS

27LV256-30I/VS

更新时间： 2024-01-05 19:58:33

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美国微芯 - MICROCHIP		/
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27LV256-30I/VS 数据手册

27LV256

TABLE 1-3:

READ OPERATION AC CHARACTERISTICS

AC Testing Waveform:

Output Load:

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

1 TTL Load + 100 pF

Input Rise and Fall Times: 10 ns

Ambient Temperature:

Commercial:

Industrial:

Tamb = 0˚C to +70˚C

Tamb = -40˚C to +85˚C

27HC256-20

27HC256-25

27HC256-30

Parameter

Sym

Units

Conditions

Min

Max

Min

Max

Min

Max

Address to Output Delay

CE to Output Delay

OE to Output Delay

tACC

tCE

—

200

100

—

250

125

—

300

125

CE = OE = VIL

OE = VIL

tOE

CE = VIL

CE or OE to O/P High

Impedance

tOFF

Output Hold from

Address CE or OE,

whichever goes ﬁrst

tOH

—

FIGURE 1-1: READ WAVEFORMS

VIH

Address

VIL

Address valid

VIH

VIL

tCE(2)

VIH

VIL

tOFF(1,3)

tOH

tOE(2)

VOH

Outputs

O0 - O7

High Z

Valid Output

VOL

tACC

Notes: (1) tOFF is specified for OE or CE, whichever occurs first

(2) OE may be delayed up to tCE - tOE after the falling edge of CE without impact on tCE

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

1996 Microchip Technology Inc.

DS11020F-page 3

1 234 5 6 7...12

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