TC74VHCT240AFK datasheet(2/9 Pages) TOSHIBA

Part #	TC74VHCT240AFK

Description	TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

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Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

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2 / 9 page

TC74VHCT240,244AF/AFT/AFK

2008-12-01

2

Pin Assignment

IEC Logic Symbol

Truth Table

Inputs

Outputs

G

An

Yn

n

Y

L

H

L

H

L

H

X

Z

X: Don’t care

Z: High impedance

Yn: TC74VHCT244A

n

Y : TC74VHCT240A

VCC

16

2A4

2

Y

1

2A3

15

14

13

12

11

20

1

2

3

4

5

6

7

1A3

2

Y

2

1A4

1

Y

2

1A1

3

Y

1

8

1

Y

1

19

2A2

G

2

1A2

3

Y

2

18

9

4

Y

2

GND 10

2A1

17

4

Y

1

(top view)

TC74VHCT240A

G

1

VCC

16

2A4

15

14

13

12

11

20

1

2

3

4

5

6

7

2Y2

1A4

1Y3

8

1Y1

19

2A2

G

2

1A2

18

9

2Y4

GND 10

2A1

17

1Y4

(top view)

TC74VHCT244A

1Y2

2A3

2Y1

1A3

2Y3

1A1

G

1

(1)

(2)

(6)

(4)

1A2

1A4

1A3

(8)

(18)

(14)

2

Y

1

4

Y

1

(16)

(12)

3

Y

1

EN

G

1

Y

1

1A1

TC74VHCT240A

(19)

(11)

(15)

(13)

2A2

2A4

2A3

(17)

(9)

(5)

2

Y

2

4

Y

2

(7)

(3)

3

Y

2

EN

G

2

1

Y

2

2A1

(1)

(2)

(6)

(4)

1A2

1A4

1A3

(8)

(18)

(14)

1Y2

1Y4

(16)

(12)

1Y3

EN

G

1

1Y1

1A1

TC74VHCT244A

(19)

(11)

(15)

(13)

2A2

2A4

2A3

(17)

(9)

(5)

2Y2

2Y4

(7)

(3)

2Y3

EN

G

2

2Y1

2A1

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