MC74LCX244(2016) 查看數據表（PDF） - ON Semiconductor

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MC74LCX244
(Rev.:2016)

Low-Voltage CMOS Octal Buffer

ON Semiconductor 

MC74LCX244

PACKAGE DIMENSIONS

D

ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ PIN ONE REFERENCE

QFN20, 2.5x4.5 MM

CASE 485AA

ISSUE B

A

B

E

2X

0.15 C

2X

0.15 C

TOP VIEW

0.10 C

20X 0.08 C

(A3)

A1

SIDE VIEW

20X L 9

D2

e

11

12

A

C

SEATING

PLANE

e

E2

NOTES:

1. DIMENSIONING AND TOLERANCING PER

ASME Y14.5M, 1994.

2. CONTROLLING DIMENSION: MILLIMETERS.

3. DIMENSIONS b APPLIES TO PLATED

TERMINAL AND IS MEASURED BETWEEN

0.25 AND 0.30 MM FROM TERMINAL.

4. COPLANARITY APPLIES TO THE EXPOSED

PAD AS WELL AS THE TERMINALS.

MILLIMETERS

DIM MIN MAX

A 0.80 1.00

A1 0.00 0.05

A3 0.20 REF

b 0.20 0.30

D

2.50 BSC

D2 0.85 1.15

E

4.50 BSC

E2 2.85 3.15

e

0.50 BSC

K 0.20 ---

L 0.35 0.45

20X b

0.10 C A B 2

0.05 C NOTE 3

1 20

19 20X

K

BOTTOM VIEW

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