
PS391/PS392/PS393
Precision, Quad, SPST Analog Switches
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10
PS8168E
09/16/02
TestCircuits/TimingDiagrams
Figure 1. Switching Time
Figure 2. Break-Before-Make Interval (PS393 only)
Figure 3. Charge Injection
V+
+12V
NO
GND
or NC
COM
V
COM =
+3V(for ton),
-3V(for toff)
Logic
Input
IN
tr <20ns
tf <20ns
VOUT = VCOM
RL
RL + RON
()
CL INCLUDES FIXTURE AND STRAY CAPACITANCE
VOUT
RL
300
CL
35pF
LOGIC INPUT WAVEFORMS INVERTED FOR
SWITCHES THAT HAVE OPPOSITE LOGIC
t
OFF
t
ON
V
OUT
90%
Logic
Input
Switch
Output
+3V
0V
50%
90%
V+
+5V
NO
GND
-5V
V-
COM
V
COM1= +3V
IN
RL= 300
CL = 35pF
CL INCLUDES FIXTURE AND STRAY CAPACITANCE
VOUT1
RL2
CL2
t
D
t
D
90%
VOUT3
Logic
Input
Switch
Output 1
(VOUT1)
+3V
0V
50%
NC
COM
V
COM3= +3V
Logic
Input
RL1
CL1
0V
Switch
Output3
(VOUT3)
V+
+5V
NO or
GND
-5V
V-
NC
COM
R
GEN
VOUT
CL
1nF
V
OUT
V
OUT
IN
V
GEN
ON
OFF
IN
Q = (
V
OUT)(CL)
IN
Logic
Input