74LVC244A

Document number: DS35888 Rev. 1 - 2

2 of 10

www.diodes.com

July 2014

© Diodes Incorporated

74LVC244A

Ordering Information

74 LVC 244A xxx -13

Logic Device

Function

Package

Packing

74 : Logic Prefix

244 :

Octal

Buffer/Line

Driver with 3

State Outputs

T20 : TSSOP-20

-13 : 13” Tape & Reel

Q20 : QFN-20

Part Number

Package

Code

Package

(Note 4 & 5)

Package

Size

13” Tape and Reel

Quantity

Part Number Suffix

74LVC244AT20-13

T20

TSSOP-20

6.4mm X 6.5mm X 1.2mm

0.65 mm lead pitch

2500/Tape & Reel

-13

74LVC244AQ20-13

Q20

V-QFN4525-20

2.5mm X 4.5mm X 0.95mm

0.50 mm lead pitch

2500/Tape & Reel

-13

Notes:

4. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf.

5. V-QFN4525-20 is a JEDEC recognized naming convention that specifies the package thickness category as V and the number 4525 describes the

package as 4.5mm X 2.5mm.

Pin Descriptions

Pin Number

Pin Name

Description

1

OE

1

Output Enable 1

2

1A1

Data Input

3

2Y4

Data Output

4

1A2

Data Input

5

2Y3

Data Output

6

1A3

Data Input

7

2Y2

Data Output

8

1A4

Data Input

9

2Y1

Data Output

10

GND

Ground

11

2A1

Data Input

12

1Y4

Data Output

13

2A2

Data Input

14

1Y3

Data Output

15

2A3

Data Input

16

1Y2

Data Output

17

2A4

Data Input

18

1Y1

Data Output

19

OE

2

Output Enable 2

20

Supply Voltage

Logic Diagram

Function Table

(Each 4-Bit Buffer)

INPUTS

OUTPUT

OE

A

Y

L

H

H

L

L

L

H

X

Z