WS128K32N-35G2TIE datasheet(3/6 Pages) WEDC

Part #	WS128K32N-35G2TIE

Description	128Kx32 SRAM MULTICHIP PACKAGE, RADIATION TOLLERANT

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Manufacturer	WEDC [White Electronic Designs Corporation]

Direct Link	http://www.whiteedc.com

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

White Electronic Designs

WS128K32-XG2TXE

December 2000

Rev. 0

ADVANCED

I

Current Source

D.U.T.

C

= 50 pf

eff

I

OL

V

1.5V

(Bipolar Supply)

Z

Current Source

OH

AC CHARACTERISTICS

VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C

Parameter

Write Cycle

Symbol

-35

-45

-55

Units

Min

Max

Min

Max

Min

Max

Write Cycle Time

tWC

35

45

55

ns

Chip Select to End of Write

tCW

25

35

45

ns

Address Valid to End of Write

tAW

25

35

45

ns

Data Valid to End of Write

tDW

20

25

ns

Write Pulse Width

tWP

25

35

45

ns

Address Setup Time

tAS

000

ns

Address Hold Time

tAH

000

ns

Output Active from End of Write

tOW1

000

ns

Write Enable to Output in High Z

tWHZ1

10

15

20

ns

Data Hold Time

tDH

000

ns

1. This parameter is guaranteed by design but not tested.

AC CHARACTERISTICS

VCC = 5.0V, GND = 0V, -55°C ≤ TA ≤ +125°C

Parameter

Read Cycle

Symbol

-35

-45

-55

Units

Min

Max

Min

Max

Min

Max

Read Cycle Time

tRC

35

45

55

ns

Address Access Time

tAA

35

45

55

ns

Output Hold from Address Change

tOH

333

ns

Chip Select Access Time

tACS

35

45

55

ns

Output Enable to Output Valid

tOE

15

20

30

ns

Chip Select to Output in Low Z

tCLZ1

333

ns

Output Enable to Output in Low Z

tOLZ1

000

ns

Chip Disable to Output in High Z

tCHZ1

20

ns

Output Disable to Output in High Z

tOHZ1

12

15

20

ns

1. This parameter is guaranteed by design but not tested.

FIGURE 2 – AC TEST CIRCUIT

Notes:

VZ is programmable from -2V to +7V.

IOL & IOH programmable from 0 to 16mA.

Tester Impedance Z0 = 75Ω.

VZ is typically the midpoint of VOH and VOL.

IOL & IOH are adjusted to simulate a typical resistive load circuit.

ATE tester includes jig capacitance.

AC Test Conditions

Parameter

Typ

Unit

Input Pulse Levels

VIL = 0, VIH = 3.0

V

Input Rise and Fall

5

ns

Input and Output Reference Level

1.5

V

Output Timing Reference Level

1.5

V

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