Datasheet

2
Functional Block Diagrams
DG408 DG409
TRUTH TABLE DG408
A
2
A
1
A
0
EN ON SWITCH
XXX0 NONE
0001 1
0011 2
0101 3
0111 4
1001 5
1011 6
1101 7
1111 8
DECODER/
DRIVER
D
LEVEL
SHIFT
†† ††
5V
REF
DIGITAL
INPUT
PROTECTION
†
S
1
S
2
S
8
A
0
A
1
A
2
EN
TRUTH TABLE DG409
A
1
A
0
EN ON SWITCH
XX0 NONE
001 1
011 2
101 3
111 4
NOTES:
1. V
AH
Logic “1” ≥2.4V.
2. V
AL
Logic “0” ≤0.8V.
DECODER/
DRIVER
D
A
LEVEL
SHIFT
†††
5V
REF
DIGITAL
INPUT
PROTECTION
†
S
1A
S
4A
S
1B
A
0
A
1
EN
D
B
S
4B
DG408, DG409