MAX4645 Maxim, MAX4645 Datasheet - Page 7

• Manufacturer Part Number: MAX4645
• Description: The MAX4645/MAX4646 single-pole, single-throw (SPST) analog switches feature a 2
• Manufacturer: Maxim

Figure 2. Switching Time
Figure 3. Charge Injection
MAX4645
MAX4646
MAX4645
MAX4646
SWITCH
INPUT
LOGIC
INPUT
V
GEN
V
COM
R
_______________________________________________________________________________________
GEN
C
V
L
OUT
INCLUDES FIXTURE AND STRAY CAPACITANCE.
COM
IN
= V
GND
COM
COM
GND
(
R
L
R
+ R
L
ON
IN
)
V
V+
V+
IN
NO
V+
V+
NO
Fast, Low-Voltage, 2.5Ω, SPST,
R
300Ω
L
SWITCH
OUTPUT
C
L
C
35pF
V
L
V
OUT
OUT
CMOS Analog Switches
V
SWITCH
OUTPUT
OUT
LOGIC
INPUT
IN
Test Circuits/Timing Diagrams
OFF
V+
0
0
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
Q = (∆V
V
t
50%
ON
OUT
ON
OUT
0.9
)(C
×
V
L
0UT
)
t
∆V
OFF
OUT
OFF
t r < 5ns
t f < 5ns
0.9
×
V
OUT
7