1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

1OE

1B1

1B2

GND

1B3

1B4

2B1

2B2

GND

2B3

2B4

3B1

3B2

GND

3B3

3B4

4B1

4B2

GND

4B3

4B4

4OE

2OE

1A1

1A2

GND

1A3

1A4

2A1

2A2

GND

2A3

2A4

3A1

3A2

GND

3A3

3A4

4A1

4A2

GND

4A3

4A4

3OE

SN74CB3Q16244

SCDS168A – MAY 2004 – REVISED SEPTEMBER 2015

www.ti.com

6 Pin Configuration and Functions

DGG, DGV, or DL Package

48-Pin TSSOP, TVSOP, or SSOP

Top View

Pin Functions

PIN

I/O

DESCRIPTION

NAME

NO.

1A1, 1A2

47, 46

I/O

Bidirectional signal to be switched

1A3, 1A4

44, 43

1B1, 1B2

2, 3

I/O

Bidirectional signal to be switched

1B3, 1B4

5, 6

Switch Output Enable to connect pins 1A1, 1A2, 1A3, 1A4 to 1B1, 1B2, 1B3, 1B4

1OE

1

I

(Active Low: L = ON, H = OFF)

2A1, 2A2

41, 40

I/O

Bidirectional signal to be switched

2A3, 2A4

38, 37

2B1, 2B2

8, 9

I/O

Bidirectional signal to be switched

2B3, 2B4

11, 12

Switch Output Enable to connect pins 2A1, 2A2, 2A3, 2A4 to 2B1, 2B2, 2B3, 2B4

2OE

48

I

(Active Low: L = ON, H = OFF)

3A1, 3A2

36, 35

I/O

Bidirectional signal to be switched

3A3, 3A4

33, 32

3B1, 3B2

13, 14

I/O

Bidirectional signal to be switched

3B3, 3B4

16, 17

Switch Output Enable to connect pins 3A1, 3A2, 3A3, 3A4 to 3B1, 3B2, 3B3, 3B4

3OE

25

I

(Active Low: L = ON, H = OFF)

4A1, 4A2

30, 29

I/O

Bidirectional signal to be switched

4A3, 4A4

27, 26

4B1, 4B2

19, 20

I/O

Bidirectional signal to be switched

4B3, 4B4

22, 23

Switch Output Enable to connect pins 4A1, 4A2, 4A3, 4A4 to 4B1, 4B2, 4B3, 4B4

4OE

24

I

(Active Low: L = ON, H = OFF)

7, 18, 31, 42

—

Power Supply

4, 10, 15, 21

GND

—

Ground

28, 34, 39, 45

4

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