SN54LVTH240, SN74LVTH240A

3.3-V ABT OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS679F – DECEMBER 1996 – REVISED MARCH 2000

2

POST OFFICE BOX 655303

FUNCTION TABLE

(each 4-bit buffer)

INPUTS

OUTPUT

OE

A

Y

L

H

L

L

LH

H

X

Z

2

1A1

4

1A2

6

1A3

8

1A4

EN

1

1Y1

18

1Y2

16

1Y3

14

1Y4

12

11

2A1

13

2A2

15

2A3

17

2A4

2Y1

9

2Y2

7

2Y3

5

2Y4

3

1OE

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

2OE

EN

19

logic diagram (positive logic)

1

218

1Y1

1OE

1A1

416

1Y2

1A2

614

1Y3

1A3

812

1Y4

1A4

19

11

9

2Y1

2OE

2A1

13

7

2Y2

2A2

15

5

2Y3

2A3

17

3

2Y4

2A4