74LVCH244A

Document number: DS35889 Rev. 1 - 2

8 of 10

www.diodes.com

July 2014

© Diodes Incorporated

74LVCH244A

Package Outline Dimensions

Please see AP02002 at http://www.diodes.com/datasheets/ap02002.pdf for the latest version.

(1) TSSOP-20

(2) QFN-20 (V-QFN4525-20)

TSSOP-20

Dim

Min

Max

Typ

A

-

1.20

-

A1

0.05

0.15

-

A2

0.80

1.05

-

b

0.19

0.30

-

c

0.09

0.20

-

D

6.40

6.60

6.50

E

6.20

6.60

6.40

E1

4.30

4.50

4.40

e

0.65 BSC

L

0.45

0.75

0.60

L1

1.0 REF

θ1

0°

8°

-

θ2

10°

14°

12°

θ3

10°

14°

12°

All Dimensions in mm

V-QFN4525-20

Dim

Min

Max

Typ

A

0.75

0.85

0.80

A1

0.00

0.05

0.02

A3

-

-

0.15

b

0.18

0.30

0.23

D

4.45

4.55

4.50

D2

2.85

3.15

3.00

E

2.45

2.55

2.50

E2

0.85

1.15

1.00

e

0.50BSC

L

0.30

0.50

0.40

Z

-

-

0.385

Z1

-

-

0.885

All Dimensions in mm

ID MARK

PIN 1

e

D

E

E1

A2

A

A1

b

DETAIL

Seating Plane

θ1

Gauge Plane

0.25

L

L1

θ2

θ3

A

A 3

S e a t i n g P l a n e

A 1

P i n # 1 I D

D

E

b

2 0 x

E 2

L

2 0 x

D 2

e

Z

4 x

Z 1

4 x