Datasheet

MAX4638/MAX4639
3.5
Ω , Single 8:1 and Dual 4:1,
Low-Voltage Analog Multiplexers
11
Maxim Integrated
50%
90%
t
R
< 5ns
t
F
< 5ns
V
OUT
+3V
0V
V
NO1
0V
LOGIC
INPUT
V
EN
SWITCH
OUTPUT
V+
V-
GND
V+
A1
V-
A0
A2
EN
NO1
NO2–NO8
COM
50Ω
MAX4638
100Ω
35pF
V+
V
OUT
V-
GND
V+
V-
NO1B
NO_, COMA
COMB
V
NO1
V
EN
MAX4639
100Ω
35pF
t
OFF(EN)
90%
V
OUT
V
NO1
A0
A1
EN
50Ω
V
EN
t
ON(EN)
Figure 4. Enable Switching Time
Figure 5. Charge Injection
ΔV
OUT
+3V
0V
LOGIC
INPUT
V
EN
V+
V
OUT
V-
GND
V+
A1
V-
A0
A2
EN
COM
MAX4638
MAX4639
C
L
1nF
V
OUT
NO_
CHANNEL
SELECT
R
S
V
S
OFF OFFOFF ON ON ON
ΔV
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ΔV
OUT
✕ C
L
V
EN
Test Circuits/Timing Diagrams (continued)