Data Sheet ADG408/ADG409
Rev. D | Page 7 of 15
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
A0
EN
V
SS
S1
A1
A2
GND
V
DD
S2
S5
S3
S6
S4
S7
DS8
1
2
3
4
16
15
14
13
5
6
7
12
11
10
8
9
ADG408
TOP VIEW
(Not to Scale)
00027-002
Figure 2. ADG408 Pin Configuration
A0
1
EN
2
V
SS
3
S1A
4
A1
16
GND
15
V
DD
14
S1B
13
S2A
5
S3A
6
S4A
7
S2B
12
S3B
11
S4B
10
DA
8
DB
9
ADG409
TOP VIEW
(Not to Scale)
00027-003
Figure 3. ADG409 Pin Configuration
Table 4. ADG408 Pin Function Descriptions
Pin
No. Mnemonic Description
1 A0 Logic Control Input.
2 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
SS
Most Negative Power Supply Potential in
Dual Supplies. In single-supply applications,
it can be connected to ground.
4 S1 Source Terminal 1. Can be an input or
an output.
5 S2 Source Terminal 2. Can be an input or
an output.
6 S3 Source Terminal 3. Can be an input or
an output.
7 S4 Source Terminal 4. Can be an input or
an output.
8 D Drain Terminal. Can be an input or an
output.
9 S8 Source Terminal 8. Can be an input or
an output.
10 S7 Source Terminal 7. Can be an input or
an output.
11 S6 Source Terminal 6. Can be an input or
an output.
12 S5 Source Terminal 5. Can be an input or
an output.
13
DD
Most Positive Power Supply Potential.
14 GND Ground (0 V) Reference.
15 A2 Logic Control Input.
16 A1 Logic Control Input.
Table 5. ADG409 Pin Function Descriptions
Pin
No.
Mnemonic Description
1 A0 Logic Control Input.
2 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 V
SS
Most Negative Power Supply Potential in
Dual Supplies. In single-supply applications,
it can be connected to ground.
4 S1A Source Terminal 1A. Can be an input or
an output.
5 S2A Source Terminal 2A. Can be an input or
an output.
6 S3A Source Terminal 3A. Can be an input or
an output.
7 S4A Source Terminal 4A. Can be an input or
an output.
8 DA Drain Terminal A. Can be an input or an
output.
9 DB Drain Terminal B. Can be an input or an
output.
10 S4B Source Terminal 4B. Can be an input or
an output.
11 S3B Source Terminal 3B. Can be an input or
an output.
12 S2B Source Terminal 2B. Can be an input or
an output.
13 S1B Source Terminal 1B. Can be an input or
an output.
14 V
DD
Most Positive Power Supply Potential.
15 GND Ground (0 V) Reference.
16 A1 Logic Control Input.
Table 6. ADG408 Truth Table
A2 A1 A0 EN On Switch
X X X 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
Table 7. ADG409 Truth Table
On Switch
A1 A0 EN Pair
X X 0 None
0 0 1 1
0 1 1 2
1 0 1 3
1 1 1 4
