Precision, CMOS Analog Switches
_____________________________________________________Test Circuits/Timing Diagrams
+3V
LOGIC
INPUT 0V
50%
tR < 20ns
tF < 20ns
SWITCH
INPUT
VCOM
SWITCH 0V
OUTPUT
VO 0.9V0
tON
tOFF
0.9V0
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
Figure 2. MAX317/MAX318 Switching-Time Test Circuit
SWITCH
INPUT
+5V
VL
COM
IN
+15V
V+
NC
OR NO
MAX317
MAX318
SWITCH
OUTPUT
VO
RL
CL
300Ω
35pF
LOGIC
INPUT
GND
V-
-15V
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
( ) VO = VCOM
RL
RL + RON
+3V
LOGIC
INPUT 0V
VCOM
SWITCH V01
OUTPUT
VCOM
tR < 20ns
50%
tF < 20ns
tTRANS
0.8V02
V02
tTRANS
0.8V01
Figure 3. MAX319 Transition Time
LOGIC
INPUT
+15V
NC V+
NO
IN
GND
MAX319
+5V
VL
COM
VO
RL
CL
1000Ω
35pF
V-
-15V
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
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