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

White Electronic Designs

WEDF1M32B-XXX5

May 1999

Rev.1

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

ADVANCED

ABSOLUTE MAXIMUM RATINGS

Parameter

Unit

Voltage on Any Pin with Respect to GND

-0.5 to +7.0

V

Voltage with Respect to GND – A9, OE#, and

RESET (2)

-2.0 to +12.5 V

V

Voltage with Respect to GND – All other

pins (1)

-2.0 to +7.0 V

V

Output Short Circuit Current

200

mA

NOTES:

1. Minimum DC voltage is -0.5V on input/output pins. During transitions, this level

may undershoot to -2.0V for periods <20ns. Maximum DC voltage on input/output

periods <20ns.

2. Minimum DC input voltage on pins A9, OE#, and RESET is -0.5V. During voltage

transitions, A9, OE#, and RESET may undershoot Vss to -2.0V for periods of up

to 20ns. See Figure 6. Maximum DC input voltage on pin A9 is +12.5V which may

overshoot to +13.5V for periods up to 20ns.

3. Output shorted for no more than one second. No more than one output shorted

at a time.

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

CAPACITANCE

Parameter

Symbol

Conditions

Max Unit

OE# capacitance

50

pF

WE#1-4 capacitance

20

pF

CS1-4 capacitance

20

pF

Data I/O capacitance

20

pF

Address input capacitance

50

pF

This parameter is guaranteed by design but not tested.

DATA RETENTION

Parameter

Test Conditions

Min

Unit

Minimum Pattern Data

150°C

10

Years

Retention Time

125°C

20

Years

AC TEST CIRCUIT

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

NOTES:

Tester Impedance Z0 = 75 Ω.

ATE tester includes jig capacitance.

I

Current Source

D.U.T.

C

= 50 pf

eff

I

OL

V

(Bipolar Supply)

Z

Current Source

OH