MC74HC540A

http://onsemi.com

7

PACKAGE DIMENSIONS

SOIC−20

DW SUFFIX

CASE 751D−05

ISSUE G

20

1

11

10

B

20X

C

18X

A1

A

SEATING

PLANE

q

E

D

M

0.25

S

A

S

B

T

e

T

B

A

DIM

MIN

MAX

MILLIMETERS

A

2.35

2.65

A1

0.10

0.25

B

0.35

0.49

C

0.23

0.32

D

12.65

12.95

E

7.40

7.60

e

1.27 BSC

H

10.05

10.55

h

0.25

0.75

L

0.50

0.90

q

0

7

NOTES:

1. DIMENSIONS ARE IN MILLIMETERS.

2. INTERPRET DIMENSIONS AND TOLERANCES

PER ASME Y14.5M, 1994.

3. DIMENSIONS D AND E DO NOT INCLUDE MOLD

PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.

5. DIMENSION B DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE PROTRUSION

SHALL BE 0.13 TOTAL IN EXCESS OF B

DIMENSION AT MAXIMUM MATERIAL

CONDITION.

__

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