HLX6256

10

E

1

e

b

(width)

(pitch)

L

TOP

VIEW

U

W

X

Y

Capacitor

Pads

[1] BSC – Basic lead spacing between centers

[2] Where lead is brazed to package

[3] Parts delivered with leads unformed

[4] Lid connected to VSS

A

b

C

D

e

E

E2

E3

F

G

L

Q

S

U

W

X

Y

0.105

± 0.015

0.017

± 0.002

0.003 to 0.006

0.720

± 0.008

0.050

± 0.005 [1]

0.500

± 0.007

0.380

± 0.008

0.060 ref

0.650

± 0.005 [2]

0.035

± 0.004

0.295 min [3]

0.026 to 0.045

0.045

± 0.010

0.130 ref

0.050 ref

0.075 ref

0.010 ref

All dimensions in inches

1

A

Lead

Alloy 42 [3]

Ceramic

Body

C

E2

G

Q

Kovar

Lid [4]

E3

BOTTOM

VIEW

S

Index

The 32K x 8 SRAM is offered in a custom 36-lead flat pack

(FP), 28-Lead FP, or standard 28-lead DIP. Each package

is constructed of multilayer ceramic (Al

internal power and ground planes. The 36-lead FP also

features a non-conductive ceramic tie bar on the lead

frame. The tie bar allows electrical testing of the device,

while preserving the lead integrity during shipping and

handling, up to the point of lead forming and insertion.

PACKAGING

Ceramic chip capacitors can be mounted to the package by

the user to maximize supply noise decoupling and increase

board packing density. These capacitors attach directly to

the internal package power and ground planes. This design

minimizes resistance and inductance of the bond wire and

package. All NC (no connect) pins should be connected

to

VSS to prevent charge build up in the radiation

environment.

36-LEAD FP PINOUT

VDD

NWE

A13

A8

A9

A11

NOE

A10

NCS

DQ7

DQ6

DQ5

DQ4

DQ3

A14

A12

A7

A6

A5

A4

A3

A2

A1

A0

DQ0

DQ1

DQ2

VSS

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Top

View

28-LEAD DIP & FP PINOUT

28-LEAD DIP

For 28-Lead DIP description, see MIL-STD-1835, Type CDIP2-T28, Config. C, Dimensions D-10

VSS

VDD

NWE

CE

A13

A8

A9

A11

NOE

A10

NCS

DQ7

DQ6

DQ5

DQ4

DQ3

VDD

VSS

VSS

VDD

A14

A12

A7

A6

A5

A4

A3

A2

A1

A0

DQ0

DQ1

DQ2

NC

VDD

VSS

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

19

Top

View