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White Electronic Designs Corporation • (508) 366-5151 • www.whiteedc.com

November 2000, Rev. 1

ECO #13417

EDI2DL32256V

RECOMMENDED OPERATING CONDITIONS

Description

Symbol

Min

Max

Unit

Input High Voltage

2

Vcc+0.3

V

Input Low Voltage

-0.3

0.7

V

Supply Voltage

Vcc

3.135

3.465

V

CAPACITANCE

Voltage on Vcc Supply Relative to Vss

-0.5V to 4.6V

-0.5V to Vcc+0.5V

Storage Temperature

-55

°C to +110°C

Junction Temperature

+110

°C

Power Dissipation

3 Watts

Short Circuit Output Current (per I/O)

20 mA

* Stresses greater than those listed under "Absolute Maximum Ratings" may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions greater than those indi-

cated in the operational sections of this specification is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect reliability.

Parameter

Symbol

Max

Unit

Address Lines

TBD

pF

Data Lines

TBD

pF

Control Lines

TBD

pF

ABSOLUTE MAXIMUM RATINGS*

DC ELECTRICAL CHARACTERISTICS

Parameter

Symbol

Conditions

Min

Max

Units

Power Supply Current: Operating

Device Selected; all inputs

850

mA

cycle time

≤

CMOS Standby

20

mA

CLK frequency = 0

TTL Standby

Device deselected; all inputs

40

mA

TTL Standby

Device deselected; all inputs

40

mA

Input Leakage Current

-2

2

µA

Output Leakage Current

Output(s) disabled, 0V

-2

2

µA

Output High Voltage

2.4

V

Output Low Voltage

0.7

V

AC TEST CIRCUIT

AC TEST CONDITIONS

50

Ω

Vt = 1.5V

Output

Z0 = 50

Ω

Z0 = 50

Ω

Parameter

I/O

Unit

Input Pulse Levels

V

Input Rise and Fall Times (max)

1.8

ns

Input and Output Timing Levels

1.25

V

Output Load

See figure, at left

AC Output Load Equivalent

1.25V

PARTIAL TRUTH TABLE

Function

BWE\

BE0\

BE1\

BE2\

BE\3

READ

H

X

X

X

X

L

H

H

H

WRITE all Bytes

L

L

L

L

L