MAX4740 Maxim, MAX4740 Datasheet - Page 7

• Manufacturer Part Number: MAX4740
• Description: The MAX4740/MAX4740H low on-resistance (0
• Manufacturer: Maxim

Caution: Do not exceed the Absolute Maximum
Ratings since stresses beyond the listed ratings
may cause permanent damage to the device.
Proper power-supply sequencing is recommended for
all CMOS devices. Improper supply sequencing can
force the switch into latch-up, causing it to draw exces-
sive supply current. The only way out of latch-up is to
Power-Supply Sequencing and Overvoltage
Figure 1. Functional Diagram
Figure 2. Switching Time
MAX4740H
MAX4740
V
LOGIC
INPUT
NC_
OR V
NO
NC3
NO3
NC4
NC1
NO1
NC2
NO2
CB2
NO4
CB1
_______________________________________________________________________________________
_
C
L
NO_
OR NC_
CB_
INCLUDES FIXTURE AND STRAY CAPACITANCE.
GND
SWITCH 2
SWITCH 4
SWITCH 1
SWITCH 3
MAX4740
CONTROL
LOGIC
V
V
COM_
CC
CC
Protection
R
L
GND
V
COM3
COM1
COM2
COM4
CC
Quad SPDT Audio Switches
C
L
V
OUT
recycle the power and reapply properly. Connect all
ground pins first, then apply power to V
apply signals to NO_, NC_, and COM_. Follow the
reverse order upon power-down.
PROCESS: BICMOS
NC3
NO3
NC4
NC1
NO1
NC2
NO2
CB2
NO4
CB1
OUTPUT
SWITCH
LOGIC
INPUT
Test Circuits/Timing Diagrams
V
CC
0V
0V
Hi Z
Hi Z
Hi Z
Hi Z
CB DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
MAX4740H
CONTROL
LOGIC
V
t
50%
OUT
ON
SWITCH 1
SWITCH 2
SWITCH 3
SWITCH 4
0.8 x V
Chip Information
0UT
GND
V
COM3
COM1
COM2
COM4
t
OFF
CC
t r < 5ns
t f < 5ns
0.8 x V
CC
OUT
, and finally
7