ADG508A/ADG509A
Rev. D | Page 8 of 16
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
A0 1
EN 2
SS
3
S1 4
A116
A2
15
GND14
V
DD
13
S2
5
S3 6
S4
7
S512
S611
S7
10
D 8
S89
ADG508A
TOP VIEW
(Not to Scale)
00051-003
Figure 3. ADG508A DIP, SOIC
4
V
SS
5
S1
6
NC
7
S2
8
S3
18
GND
17
V
DD
16
NC
15
S5
14
S6
19
A2
20
A1
1
NC
2
A0
3
EN
13
S7
12
S8
11
NC
10
D
9
S4
ADG508A
TOP VIEW
(Not to Scale)
NC = NO CONNECT
00051-004
Figure 4. ADG508A LCC
1201923
4
5
6
7
8
18
17
16
15
14
9
10
11 12 13
NC = NO CONNECT
SS
S1
NC
S2
S3
GND
V
DD
NC
S5
S6
EN
A0
NC
A1
A2
S4
D
NC
S8
S7
PIN 1
IDENTIFIER
ADG508A
TOP VIEW
(Not to Scale)
0051-005
Figure 5. ADG508A PLCC
Table 4. ADG508A Pin Function Description
Pin Number
DIP/SOIC PLCC/LCC Mnemonic Description
1 2 A0 Logic Control Input.
2 3 EN
Active High Digital Input. When low, the device is disabled and all switches are off.
When high, Ax logic inputs determine on switches.
3 4 V
SS
Most Negative Power Supply Potential in Dual Supplies. In single-supply applications,
it can be connected to ground.
4 5 S1 Source Terminal 1. Can be an input or an output.
5 7 S2 Source Terminal 2. Can be an input or an output.
6 8 S3 Source Terminal 3. Can be an input or an output.
7 9 S4 Source Terminal 4. Can be an input or an output.
8 10 D Drain Terminal. Can be an input or an output.
9 12 S8 Source Terminal 8. Can be an input or an output.
10 13 S7 Source Terminal 7. Can be an input or an output.
11 14 S6 Source Terminal 6. Can be an input or an output.
12 15 S5 Source Terminal 5. Can be an input or an output.
13 17 V
DD
Most Positive Power Supply Potential.
14 18 GND Ground (0 V) Reference.
15 19 A2 Logic Control Input.
16 20 A1 Logic Control Input.
N/A 1 NC No Connect.
N/A 6 NC No Connect.
N/A 11 NC No Connect.
N/A 16 NC No Connect.
Table 5. ADG508A Truth Table
A2 A1 A0 EN On Switch
X
1
X
1
XX
1
0 None
0 0 0 1 1
0 0 1 1 2
0 1 0 1 3
0 1 1 1 4
1 0 0 1 5
1 0 1 1 6
1 1 0 1 7
1 1 1 1 8
1
X = don’t care.