Datasheet

MAX381/MAX383/MAX385
Precision, Low-Voltage Analog Switches
_______________________________________________________________________________________ 9
V
GEN
GND
C
L
1.0nF
V
OUT
0V -5V
V-
V+
R
GEN
V
OUT
IN
ON OFF ON
V
OUT
Q = (V
OUT
) (C
L
)
+5V
COM NC or NO
MAX381
MAX383
MAX385
Figure 4. Charge-Injection Test Circuit
50%
t
OFF
t
r
< 20ns
t
f
< 20ns
V
OUT
V
OUT
t
ON
0.9 x V
OUT
0.9 x V
OUT
+3V
0V
0V
LOGIC
INPUT
SWITCH
OUTPUT
LOGIC INPUT WAVEFORM IS INVERTED FOR
SWITCHES THAT HAVE THE OPPOSITE LOGIC 
SENSE CONTROL.
+5V
V
OUT
R
L
= 1000Ω
C
L
= 35pF
-5V
REPEAT TEST FOR EACH SWITCH
0V
GND
LOGIC
INPUT
V
COM
= +3V (for t
ON
)
V
COM
= -3V (for t
OFF
)
FOR LOAD CONDITIONS, SEE
Electrical Characteristics.
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
OUT
= V
COM
R
L
R
L
+ R
ON
V+
V-
COM
IN
NC or NO
( )
MAX381
MAX383
MAX385
50%
V
OUT1
V
OUT2
0.9 x V
OUT
+3V
0V
0V
LOGIC
INPUT
SWITCH
OUTPUT 1
SWITCH
OUTPUT 2
+5V
V+
V-
-5V
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
LOGIC 0 INPUT
0V
GND
LOGIC
INPUT
0V
0.9 x V
OUT
t
D
t
D
IN
R
L2
C
L2
V
OUT2
R
L1
V
OUT1
C
L1
R
L
= 1000Ω
C
L
= 35pF
COM
COM
NC
NO
MAX383
V
COM
= +3V
V
COM
= +3V
Figure 2. Switching-Time Test Circuit
Figure 3. Break-Before-Make Test Circuit (MAX383 only)
______________________________________________Test Circuits/Timing Diagrams