Datasheet

MAX323/MAX324/MAX325
Precision, Single-Supply,
SPST Analog Switches
_______________________________________________________________________________________ 7
V
GEN
GND
NC
or NO
C
L
V
OUT
V+
V
OUT
IN
OFF
ON
OFF
∆V
OUT
Q = (∆V
OUT
)(C
L
)
COM
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
OFF
ON
OFF
IN
V
IN
= +3V
+5V
R
GEN
IN
MAX323
MAX324
MAX325
Figure 4. Charge Injection
t
r
< 20ns
t
f
< 20ns
50%
0V
LOGIC
INPUT
R
L
1kΩ
NO
or NC
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
V
OUT
= V
COM (
R
L
)
R
L
+ R
ON
SWITCH
INPUT
IN
+3V
t
OFF
0V
COM
SWITCH
OUTPUT
0.9 x V
0UT
0.9 x V
OUT
t
ON
V
OUT
SWITCH
OUTPUT
LOGIC
INPUT
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V+
C
L
35pF
+5V
V
OUT
V
COM
0V
MAX323
MAX324
MAX325
50%
0.9 x V
0UT1
+3V
0V
0V
LOGIC
INPUT
SWITCH
OUTPUT 2
(V
OUT2
)
0V
0.9 x V
OUT2
t
D
t
D
LOGIC
INPUT
R
L2
300Ω
GND
C
L
INCLUDES FIXTURE AND STRAY CAPACITANCE.
COM2
IN
COM1
V
OUT2
V+
+5V
C
L2
35pF
V
COM1
= +3V
R
L1
300Ω
V
OUT1
C
L1
35pF
NO1
NC2
SWITCH
OUTPUT 1
(V
OUT1
)
MAX325
V
COM2
= +3V
Figure 2. Switching Time
Figure 3. Break-Before-Make Interval (MAX325 only)
______________________________________________Test Circuits/Timing Diagrams