Datasheet

MAX4708/MAX4709
Fault-Protected, Single 8-to-1/
Dual 4-to-1 Multiplexers
_______________________________________________________________________________________ 9
Pin Descriptions
MAX4708 (Single 8-to-1 Mux) MAX4709 (Dual 4-to-1 Mux)
PIN
NAME
FUNCTION
1 A0 Address Bit 0
2 EN Mux Enable
3V-
Negative Supply Voltage. Bypass to GND
with a 0.1µF capacitor.
4
NO1
Channel Input 1
5
NO2
Channel Input 2
6
NO3
Channel Input 3
7
NO4
Channel Input 4
8
COM
Analog Output
9
NO8
Channel Input 8
10
NO7
Channel Input 7
11
NO6
Channel Input 6
12
NO5
Channel Input 5
13 V+
Positive Supply Voltage. Bypass to GND
with a 0.1µF capacitor.
14
GND
Ground
15 A2 Address Bit 2
16 A1 Address Bit 1
PIN
NAME
FUNCTION
1 A0 Address Bit 0
2 EN Mux Enable
3V-
Negative Supply Voltage. Bypass to GND
with a 0.1µF capacitor.
4
NO1A
Channel Input 1A
5
NO2A
Channel Input 2A
6
NO3A
Channel Input 3A
7
NO4A
Channel Input 4A
8
COMA
Mux Output A
9
COMB
Mux Output B
10
NO4B
Channel Input 4B
11
NO3B
Channel Input 3B
12
NO2B
Channel Input 2B
13
NO1B
Channel Input 1B
14 V+
Positive Supply Voltage. Bypass to GND
with a 0.1µF capacitor.
15
GND
Ground
16 A1 Address Bit 1
Truth Tables
MAX4708 (Single 8-to-1 Mux) MAX4709 (Dual 4-to-1 Mux)
A2 A1 A0 EN
ON SWITCH
XXX0 None
0001 NO1
0011 NO2
0101 NO3
0111 NO4
1001 NO5
1011 NO6
1101 NO7
1111 NO8
A1 A0 EN COMA COMB
X X 0 None None
0 0 1 NO1A NO1B
0 1 1 NO2A NO2B
1 0 1 NO3A NO3B
1 1 1 NO4A NO4B
X = Don’t care.