Precision, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
______________________________________________Test Circuits/Timing Diagrams
+15V
V+
A2
NO1
±10V
A1
NO2-NO7
A0
MAX308 NO8
+10V
EN
GND
50Ω
COM
V-
300Ω
+15V -15V
V+
A1
NO1B
±10V
A0
NO1A-NO4A
NO4B
MAX309
+10V
EN
COMB
GND
V-
50Ω
300Ω
-15V
VOUT
35pF
VOUT
35pF
LOGIC +3V
INPUT
0V
VNO1
SWITCH
OUTPUT
VOUT 0V
VNO8
tTRANS
ON
50%
90%
tr < 20ns
tf < 20ns
90%
tTRANS
Figure 2. Transition Time
+15V
V+
EN
NO1
-5V
NO2-NO8
A0
A1 MAX308
A2
50Ω
GND
COM
V-
1k
-15V
+15V
EN
V+ NO1B
-5V
NO1A-NO4A
NO2B-NO4B,
A0
COMA
MAX309
A1
COMB
50Ω
GND
V-
1k
-15V
Figure 3. Enable Switching Time
VOUT
35pF
VOUT
35pF
LOGIC
INPUT
+3V
0V
tON(EN)
0V
SWITCH
OUTPUT
VOUT
50%
90%
tr < 20ns
tf < 20ns
tOFF(EN)
10%
_______________________________________________________________________________________ 7