2003 Oct 30

4

Philips Semiconductors

Product specification

Octal buffer/line driver with 5 V tolerant

inputs/outputs (3-state)

74LVC244A; 74LVCH244A

PINNING

PIN

SYMBOL

DESCRIPTION

11OE

output enable input (active

LOW)

2

1A0

data input

3

2Y0

bus output

4

1A1

data input

5

2Y1

bus output

6

1A2

data input

7

2Y2

bus output

8

1A3

data input

9

2Y3

bus output

10

GND

ground (0 V)

11

2A3

bus input

12

1Y3

bus output

13

2A2

bus input

14

1Y2

bus output

15

2A1

bus input

16

1Y1

bus output

17

2A0

bus input

18

1Y0

bus output

19

2OE

output enable input

(active LOW)

20

supply voltage

PIN

SYMBOL

DESCRIPTION

handbook, halfpage

1OE

1A0

2Y0

1A1

2Y1

1A2

2Y2

1A3

2Y3

GND

VCC

2OE

1Y0

2A0

2A1

1Y2

1Y1

2A2

1Y3

2A3

1

2

3

4

5

6

7

8

9

10

11

12

20

19

18

17

16

15

14

13

MNA872

Fig.1 Pin configuration SO and (T)SSOP.

handbook, halfpage

1

2

3

4

5

6

7

8

9

1A0

2Y0

1A1

2Y1

1A2

2Y2

1A3

2Y3

19

18

17

16

15

14

13

12

2OE

1Y0

2A0

1Y1

2A1

1Y2

2A2

1Y3

20

1OE

VCC

10

11

GND

Top view

2A3

MBL761

Fig.2 Pin configuration DHVQFN20.

(1) The die substrate is attached to this pad using conductive die

attach material. It can not be used as a supply pin or input.