3-46

Figure 2 - Pin Connections

Pin Description

Pin #*

Name

Description

1Y3

Y3 Analog (Input/Output): this is connected to the Y3 column of the switch array.

2AY2

Y2 Address Line (Input).

3

RESET

Master RESET (Input): this is used to turn off all switches regardless of the condition of

CS. Active High.

4,5

AX3,AX0 X3 and X0 Address Lines (Inputs).

6,7

X14, X15 X14 and X15 Analog (Inputs/Outputs): these are connected to the X14 and X15 rows of

the switch array.

8-13

X6-X11

X6-X11 Analog (Inputs/Outputs): these are connected to the X6-X11 rows of the switch

array.

14

NC

No Connection

15

Y7

Y7 Analog (Input/Output): this is connected to the Y7 column of the switch array.

16

Digital Ground Reference.

17

Y6

Y6 Analog (Input/Output): this is connected to the Y6 column of the switch array.

18

STROBE STROBE (Input): enables function selected by address and data. Address must be stable

before STROBE goes high and DATA must be stable on the falling edge of the STROBE.

Active High.

19

Y5

Y5 Analog (Input/Output): this is connected to the Y5 column of the switch array.

20

Negative Power Supply.

21

Y4

Y4 Analog (Input/Output): this is connected to the Y4 column of the switch array.

22, 23

AX1,AX2 X1 and X2 Address Lines (Inputs).

24, 25

AY0,AY1 Y0 and Y1 Address Lines (Inputs).

* Plastic DIP and CERDIP only

40 PIN CERDIP/PLASTIC DIP

44 PIN PLCC

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

1

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

AY2

RESET

AX3

AX0

X14

X15

X6

X7

X8

X9

X10

X11

NC

Y7

VSS

Y6

STROBE

Y5

VEE

Y3

Y2

DATA

Y1

CS

Y0

NC

X0

X1

X2

X3

X4

X5

X12

X13

AY1

AY0

AX2

AX1

Y4

VDD

X14

X15

X6

X7

X8

X9

X10

X11

NC

NC

Y7

1

65432

44 43 42 41 40

7

8

9

10

11

12

13

14

15

16

39

38

37

36

35

34

33

32

31

30

23

18 19 20 21 22

24 25 26 27 28

17

29

Y0

NC

X0

X1

X2

X3

X4

X5

X12

X13

NC