MC74LCX257 datasheet(6/8 Pages) ONSEMI

Part #	MC74LCX257

Description	LOW-VOLTAGE CMOS QUAD 2-INPUT MULTIPLEXER

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MC74LCX257

MOTOROLA

LCX DATA

BR1339 — REV 3

6

OUTLINE DIMENSIONS

M SUFFIX

PLASTIC SOIC EIAJ PACKAGE

CASE 966–01

ISSUE O

D SUFFIX

PLASTIC SOIC PACKAGE

CASE 751B–05

ISSUE J

0.25 (0.010)

T

B

A

M

S

MIN

MAX

MILLIMETERS

INCHES

DIM

A

B

C

D

F

G

J

K

M

P

R

9.80

3.80

1.35

0.35

0.40

0.19

0.10

0

°

5.80

0.25

10.00

4.00

1.75

0.49

1.25

0.25

7

°

6.20

0.50

0.386

0.150

0.054

0.014

0.016

0.008

0.004

0

°

0.229

0.010

0.393

0.157

0.068

0.019

0.049

0.009

7

°

0.244

0.019

1.27 BSC

0.050 BSC

NOTES:

1. DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2. CONTROLLING DIMENSION: MILLIMETER.

3. DIMENSIONS A AND B DO NOT INCLUDE

MOLD PROTRUSION.

4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)

PER SIDE.

5. DIMENSION D DOES NOT INCLUDE DAMBAR

PROTRUSION. ALLOWABLE DAMBAR

PROTRUSION SHALL BE 0.127 (0.005) TOTAL

IN EXCESS OF THE D DIMENSION AT

MAXIMUM MATERIAL CONDITION.

1

8

9

16

–A

–

–B

–

D 16 PL

K

C

G

–T

–

SEATING

PLANE

R X 45

°

M

J

F

P 8 PL

0.25 (0.010)

B

M

Z

D

HE

E

1

16

9

8

b

A1

A

e

L

DIM

MIN

MAX

MIN

MAX

INCHES

---

2.05

---

0.081

MILLIMETERS

0.05

0.20

0.002

0.008

0.35

0.50

0.014

0.020

0.18

0.27

0.007

0.011

9.90

10.50

0.390

0.413

5.10

5.45

0.201

0.215

1.27 BSC

0.050 BSC

7.40

8.20

0.291

0.323

0.50

0.85

0.020

0.033

1.10

1.50

0.043

0.059

0

0.70

0.90

0.028

0.035

---

0.78

---

0.031

A1

A

b

c

D

E

e

L

M

Z

HE

Q1

LE

_ 10_

0

_ 10_

LE

Q1

c

M _

VIEW P

DETAIL P

NOTES:

1 DIMENSIONING AND TOLERANCING PER ANSI

Y14.5M, 1982.

2 CONTROLLING DIMENSION: MILLIMETER.

3 DIMENSIONS D AND E DO NOT INCLUDE MOLD

FLASH OR PROTRUSIONS AND ARE MEASURED

AT THE PARTING LINE. MOLD FLASH OR

PROTRUSIONS SHALL NOT EXCEED 0.15 (0.006)

PER SIDE.

4 TERMINAL NUMBERS ARE SHOWN FOR

REFERENCE ONLY.

5 THE LEAD WIDTH DIMENSION (b) DOES NOT

INCLUDE DAMBAR PROTRUSION. ALLOWABLE

DAMBAR PROTRUSION SHALL BE 0.08 (0.003)

TOTAL IN EXCESS OF THE LEAD WIDTH

DIMENSION AT MAXIMUM MATERIAL CONDITION.

DAMBAR CANNOT BE LOCATED ON THE LOWER

RADIUS OR THE FOOT. MINIMUM SPACE

BETWEEN PROTRUSIONS AND ADJACENT LEAD

TO BE 0.46 ( 0.018).

0.13 (0.005) M

0.10 (0.004)

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