HI-546, HI-547, HI-548, HI-549
Functional Diagrams (Continued)
1K
IN 1
1K
IN 2
1K
IN 8
HI-548
OUT
DECODER/
DRIVER
1K
IN 1A
1K
IN 4A
1K
IN 1B
1K
IN 4B
HI-549
OVERVOLTAGE
CLAMP AND
SIGNAL
ISOLATION
5V
REF
† DIGITAL INPUT
PROTECTION
Schematic Diagrams
P
LEVEL
SHIFT
† † ††
A0 A1 A2 EN
OVERVOLTAGE
CLAMP AND
SIGNAL
ISOLATION
5V
REF
† DIGITAL INPUT
PROTECTION
ADDRESS DECODER
V+
P
P
P
P
P
P
DECODER/
DRIVER
OUT
A
OUT
B
LEVEL
SHIFT
† ††
A0
A1 EN
N
A0 OR A0 N
A1 OR A1
N
A2 OR A2
N
A3 OR A3
N
ENABLE
DELETE A3 OR A3 INPUT FOR HI-547, HI-548, HI-549
DELETE A2 OR A2 INPUT FOR HI-549
TO P-CHANNEL
N
N DEVICE OF
THE SWITCH
TO N-CHANNEL
DEVICE OF
THE SWITCH
V-
5