Datasheet

MAX4539/MAX4540
Low-Voltage, Single 8-to-1 and
Dual 4-to-1 Cal-Multiplexers
______________________________________________________________________________________ 11
Truth Tables
MAX4539 (Single 8-to-1 Cal-Mux)
State is latched when LATCH is high.X
NO20
NO10
NO40
NO60
NO50
NO30
NO80
REFHI1
(V+ / 2) Divider Mode, V
COM
= 2048/4096 V+1
(V+ - V-) Divider Mode , V
COM
= 2560/4096 (V+ - V-)1
CAL
Gain Divider Mode, V
COM
= 4081/4096 (V
REFHI
- V
REFLO
)1
All switches and dividers open. COM is high-Z. Latch contents set
to all 1’s.
X
COM
GND1
REFLO1
NO70
All switches and dividers open. COM is high-Z.1
Offset Divider Mode, V
COM
= 15/4096 (V
REFHI
- V
REFLO
)1
X
0
0
0
1
1
0
1
0
0
0
A2
1
X
1
0
1
1
1
X
0
0
1
0
0
1
1
0
0
1
A1
0
X
0
1
1
1
1
X
1
0
1
1
0
0
1
1
0
1
A0
1
X
0
0
0
1
0
1
1
1
1
1
1
1
1
1
1
1
EN
1
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
LATCH
0
X
0
0
0
0
0
MAX4540 (Dual 4-to-1 Cal-Mux)
State is latchedX
NO2A0
NO1A0
NO4A0
Gain Divider Mode1
GND1
NO3A0
All switches and dividers open.
COMA is high-Z.
1
CAL
All switches and dividers open.
COMA is high-Z.
COMA
X
Offset Divider Mode1
X
0
0
1
0
0
1
1
A1
X
1
X
1
0
1
1
0
0
1
A0
X
0
1
1
1
1
1
1
1
1
EN
0
1
1
0
0
0
0
0
0
0
LATCH
X
0
State is latched
NO2B
NO1B
NO4B
REFLO
GND
NO3B
All switches and dividers open.
COMB is high-Z.
All switches and dividers open.
COMB is high-Z.
COMB
REFLO
X = Don’t care
X = Don’t care