MC74AC646, MC74ACT646

www.onsemi.com

10

PACKAGE DIMENSIONS

SOIC−24 WB

DW SUFFIX

CASE 751E−04

ISSUE F

b

M

0.25

C

SEATING

PLANE

A1

M

L

DETAIL A

END VIEW

h

_

NOTES:

1. DIMENSIONING AND TOLERANCING PER ASME

Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. DIMENSIONS b AND c APPLY TO THE FLAT SEC-

TION OF THE LEAD AND ARE MEASURED BE-

TWEEN 0.10 AND 0.25 FROM THE LEAD TIP.

4. DIMENSIONS D AND E1 DO NOT INCLUDE MOLD

FLASH, PROTRUSIONS OR GATE BURRS. MOLD

FLASH, PROTRUSIONS OR GATE BURRS SHALL

NOT EXCEED 0.15 mm PER SIDE. INTERLEAD

FLASH OR PROTRUSION SHALL NOT EXCEED

0.25 PER SIDE. DIMENSIONS D AND E1 ARE

DETERMINED AT DATUM H.

5. A1 IS DEFINED AS THE VERTICAL DISTANCE

FROM THE SEATING PLANE TO THE LOWEST

POINT ON THE PACKAGE BODY.

NOTE 3

PIN 1

12

1

24

13

TOP VIEW

DIM

MIN

MAX

MILLIMETERS

A

2.35

2.65

b

0.35

0.49

e

1.27 BSC

h

0.25

0.75

c

0.23

0.32

A1

0.13

0.29

L

0.41

0.90

M

0

8

_

_

D

E1

SIDE VIEW

11.00

24X

0.52

24X

1.62

1.27

DIMENSIONS: MILLIMETERS

1

PITCH

*For additional information on our Pb−Free strategy and soldering

details, please download the ON Semiconductor Soldering and

Mounting Techniques Reference Manual, SOLDERRM/D.

SOLDERING FOOTPRINT*

E

10.30 BSC

RECOMMENDED

INDICATOR

A

B

0.25 C

24X

B

A

C

A

NOTE 5

x 45

c

NOTE 3

DETAIL A

C

H

D

15.25

15.54

E1

7.40

7.60

E

S

S

e

PUBLICATION ORDERING INFORMATION

N. American Technical Support: 800−282−9855 Toll Free

USA/Canada

Europe, Middle East and Africa Technical Support:

Phone: 421 33 790 2910

Japan Customer Focus Center

Phone: 81−3−5817−1050

MC74AC646/D

LITERATURE FULFILLMENT:

Literature Distribution Center for ON Semiconductor

P.O. Box 5163, Denver, Colorado 80217 USA

Phone: 303−675−2175 or 800−344−3860 Toll Free USA/Canada

Fax: 303−675−2176 or 800−344−3867 Toll Free USA/Canada

Email: orderlit@onsemi.com

ON Semiconductor Website: www.onsemi.com

Order Literature: http://www.onsemi.com/orderlit

For additional information, please contact your local

Sales Representative

ON Semiconductor and the

are registered trademarks of Semiconductor Components Industries, LLC (SCILLC) or its subsidiaries in the United States and/or other countries.

SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed

at www.onsemi.com/site/pdf/Patent−Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation

or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and

specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets

and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be validated for each

customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended,

or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which

the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or

unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and

expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim

alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable

copyright laws and is not for resale in any manner.