3-10

Figure 2 - Pin Connections

* Plastic DIP and CERDIP only

Pin Description

Pin #*

Name

Description

1-3

Y2-Y0

Y2-Y0 Analog (Inputs/Outputs): these are connected to the Y2-Y0 columns of the

switch array.

4DATA

DATA (Input): a logic high input will turn on the selected switch and a logic low will turn off

the selected switch. Active High.

5X0

X0 Analog (Input/Output): this is connected to the X0 row of the switch array.

6AX0

X0 Address Line (Input).

7X1

X1 Analog (Input/Output): this is connected to the X1 row of the switch array.

8AX1

X1 Address Line (Input).

9X2

X2 Analog (Input/Output): this is connected to the X2 row of the switch array.

10

CS

Chip Select (Input): this is used to select the device. Active High.

11

X3

X3 Analog (Input/Output): this is connected to the X3 row of the switch array.

12

Digital Ground Reference.

13

Negative Power Supply.

14-16

AY0-AY2 Y0 -Y2 Address Lines (Inputs).

17

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.

18

RESET

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

CS. Active High.

19-23

Y7-Y3

Y7-Y3 Analog (Inputs/Outputs): these are connected to the Y7-Y3 columns of the

switch array.

24

VDD

Positive Power Supply.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

24

23

22

21

20

19

18

17

Y2

Y1

Y0

DATA

X0

AX0

X1

AX1

X2

CS

X3

VSS

VDD

Y3

Y4

Y5

Y6

Y7

RESET

STROBE

AY2

AY1

AY0

VEE

28 PIN PLCC

24 PIN CERDIP/PLASTIC DIP

5

6

7

8

9

10

11

25

24

23

22

21

20

19

•

Y5

Y6

Y7

RESET

STROBE

AY2

NC

NC

D0

J0

D1

J1

D2

J2