MT8814
ISO-CMOS
AX3
RESET
AY2
Y3
VDD
Y2
DATA
Y1
CS
Y0
NC
X0
X1
X2
X3
X4
X5
NC
NC
NC
44 PIN PLCC
40 PIN CERDIP/PLASTIC DIP
Figure 2 - Pin Connections
Pin Description
Pin #*
1
2
3
4,5
6,7
8-13
14
15
16
17
18
Name
Y3
AY2
RESET
AX3,AX0
NC
X6-X11
NC
Y7
V
SS
Y6
STROBE
Description
Y3 Analog (Input/Output):
this is connected to the Y3 column of the switch array.
Y2 Address Line (Input).
Master RESET (Input):
this is used to turn off all switches regardless of the condition of
CS. Active High.
X3 and X0 Address Lines (Inputs).
No Connection.
X6-X11 Analog (Inputs/Outputs):
these are connected to the X6-X11 rows of the switch
array.
No Connection
Y7 Analog (Input/Output):
this is connected to the Y7 column of the switch array.
Digital Ground Reference .
Y6 Analog (Input/Output):
this is connected to the Y6 column of the switch array.
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.
Y5 Analog (Input/Output):
this is connected to the Y5 column of the switch array.
Negative Power Supply.
Y4 Analog (Input/Output):
this is connected to the Y4 column of the switch array.
X1 and X2 Address Lines (Inputs).
Y0 and Y1 Address Lines (Inputs).
No Connection.
X5-X0 Analog (Inputs/Outputs):
these are connected to the X5-X0 rows of the switch
array.
No Connection.
Y0 Analog (Input/Output):
this is connected to the Y0 column of the switch array.
Chip Select (Input):
this is used to select the device. Active High.
Y1 Analog (Input/Output):
this is connected to the Y1 column of the switch array.
DATA (Input):
a logic high input will turn on the selected switch and a logic low will turn off
the selected switch. Active High.
Y2 Analog (Input/Output):
this is connected to the Y2 column of the switch array.
Positive Power Supply.
19
20
21
22, 23
24, 25
26, 27
28 - 33
34
35
36
37
38
39
40
Y5
V
EE
Y4
AX1,AX2
AY0,AY1
NC
X5-X0
NC
Y0
CS
Y1
DATA
Y2
V
DD
* Plastic DIP and CERDIP only
3-34
NC
Y6
STROBE
Y5
VEE
Y4
AX1
AX2
AY0
AY1
NC
Y3
AY2
RESET
AX3
AX0
NC
NC
X6
X7
X8
X9
X10
X11
NC
Y7
VSS
Y6
STROBE
Y5
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VDD
Y2
DATA
Y1
CS
Y0
NC
X0
X1
X2
X3
X4
X5
NC
NC
AY1
AY0
AX2
AX1
Y4
AX0
NC
X6
X7
X8
X9
X10
X11
NC
Y7
VSS
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
35
12
34
13
33
14
32
15
31
16
30
29
17
18 19 20 21 22 23 24 25 26 27 28
NC
NC
MITEL [ MITEL NETWORKS CORPORATION ]
