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White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com

White Electronic Designs

WME128K8-XXX

January 2004

Rev. 5

White Electronic Designs Corp. reserves the right to change products or specifications without notice.

FIGURE 2 –

AC Test Circuit

DC CHARACTERISTICS

Parameter

Symbol

Conditions

Min

Max

Unit

Input Leakage Current

10

µA

Output Leakage Current

10

µA

Operating Supply Current

80

mA

Standby Current

0.625

mA

Output Low Voltage

0.45

V

Output High Voltage

2.4

V

TRUTH TABLE

CS#

OE#

WE#

Mode

Data I/O

H

X

X

Standby

High Z

L

L

H

Read

Data Out

L

H

L

Write

Data In

X

H

X

Out Disable

High Z/Data Out

X

X

H

Write

X

L

X

Inhibit

CAPACITANCE

Parameter

Symbol

Conditions

Max Unit

Input Capacitance

20

pF

Output Capacitance

20

pF

This parameter is guaranteed by design but not tested.

ABSOLUTE MAXIMUM RATINGS

Parameter

Symbol

Unit

Operating Temperature

-55 to +125

°C

Storage Temperature

-65 to +150

°C

Signal Voltage Relative to GND

-0.6 to + 6.25

V

Voltage on OE# and A9

-0.6 to +13.5

V

NOTE:

Stresses above 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 above those indicated in the operational sections of

this specification is not implied. Exposure to absolute maximum rating conditions for

extended periods may affect device reliability.

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Min

Max

Unit

Supply Voltage

4.5

5.5

V

Input High Voltage

2.0

V

Input Low Voltage

-0.5

+0.8

V

Operating Temp. (Mil.)

-55

+125

°C

Operating Temp. (Ind.)

-40

+85

°C

AC TEST CONDITIONS

Parameter

Typ

Unit

Input Pulse Levels

V

Input Rise and Fall

5

ns

Input and Output Reference Level

1.5

V

Output Timing Reference Level

1.5

V

Tester Impedance Z0 = 75Ω.

ATE tester includes jig capacitance.

Current Source

IOH

IOL

Current Source

Vz ~ 1.5V

Bipolar Supply

~

D.U.T

Ceff = 50 pf