74FST3257DT datasheet(7/8 Pages) ONSEMI

Il numero della parte	74FST3257DT

Spiegazioni elettronici	Quad 2:1 Multiplexer/ Demultiplexer Bus Switch

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74FST3257

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7

PACKAGE DIMENSIONS

QSOP−16

QS SUFFIX

CASE 492−01

ISSUE O

MAX

MILLIMETERS

G

R

−B−

−A−

L

M

0.25 (0.010)

T

U

−T−

SEATING

PLANE

K

D 16 PL

C

M

0.25 (0.010)

T BA

S

V

N

J

M

F

8 PL

DETAIL E

H x 45

_

RAD.

MOLD PIN

DIM

MIN

MAX

MIN

INCHES

A

4.80

4.98

0.189

0.196

B

3.81

3.99

0.150

0.157

C

1.55

1.73

0.061

0.068

D

0.20

0.31

0.008

0.012

F

0.41

0.89

0.016

0.035

G

0.64 BSC

0.025 BSC

H

0.20

0.46

0.008

0.018

J

0.249

0.191

0.0098 0.0075

K

0.10

0.25

0.004

0.010

L

5.84

6.20

0.230

0.244

M

0

8

0

8

N

0

7

0

7

P

0.18

0.28

0.007

0.011

Q

0.51 DIA

0.020 DIA

R

0.64

0.89

0.025

0.035

U

0.64

0.89

0.025

0.035

V

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: INCH.

3. THE BOTTOM PACKAGE SHALL BE BIGGER THAN

THE TOP PACKAGE BY 4 MILS (NOTE: LEAD SIDE

ONLY). BOTTOM PACKAGE DIMENSION SHALL

FOLLOW THE DIMENSION STATED IN THIS

DRAWING.

4. PLASTIC DIMENSIONS DOES NOT INCLUDE MOLD

FLASH OR PROTRUSIONS. MOLD FLASH OR

PROTRUSIONS SHALL NOT EXCEED 6 MILS PER

SIDE.

5. BOTTOM EJECTOR PIN WILL INCLUDE THE

COUNTRY OF ORIGIN (COO) AND MOLD CAVITY I.D.

__

_

0

8

0

__

_

8

_

__

MARK

Q

P

0.013 X 0.005

DP. MAX

RAD.

0.005−0.010

TYP

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