MC74VHCT540A datasheet(6/7 Pages) ONSEMI

No de pièce	MC74VHCT540A

Description	Octal Bus Buffer

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MC74VHCT540A

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6

PACKAGE DIMENSIONS

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.

__

SOIC

DW SUFFIX

CASE 751D−05

ISSUE F

DIM

A

MIN

MAX

MIN

MAX

INCHES

6.60

0.260

MILLIMETERS

B

4.30

4.50

0.169

0.177

C

1.20

0.047

D

0.05

0.15

0.002

0.006

F

0.50

0.75

0.020

0.030

G

0.65 BSC

0.026 BSC

H

0.27

0.37

0.011

0.015

J

0.09

0.20

0.004

0.008

J1

0.09

0.16

0.004

0.006

K

0.19

0.30

0.007

0.012

K1

0.19

0.25

0.007

0.010

L

6.40 BSC

0.252 BSC

M

0

8

0

8

_

___

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSION A DOES NOT INCLUDE MOLD FLASH

PROTRUSIONS OR GATE BURRS. MOLD FLASH

OR GATE BURRS SHALL NOT EXCEED 0.15

(0.006) PER SIDE.

4. DIMENSION B DOES NOT INCLUDE INTERLEAD

FLASH OR PROTRUSION. INTERLEAD FLASH OR

PROTRUSION SHALL NOT EXCEED 0.25 (0.010)

PER SIDE.

5. DIMENSION K DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN

EXCESS OF THE K DIMENSION AT MAXIMUM

MATERIAL CONDITION.

6. TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

7. DIMENSION A AND B ARE TO BE DETERMINED

AT DATUM PLANE −W−.

110

11

20

PIN 1

IDENT

A

B

−T−

0.100 (0.004)

C

D

G

H

SECTION N−N

K

K1

JJ1

N

M

F

−W−

SEATING

PLANE

−V−

−U−

S

U

M

0.10 (0.004)

V S

T

20X

REF

K

L

L/2

2X

S

U

0.15 (0.006) T

DETAIL E

0.25 (0.010)

DETAIL E

6.40

0.252

−−−

S

U

0.15 (0.006) T

TSSOP

DT SUFFIX

CASE 948E−02

ISSUE A

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