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MAX4745ELB+T

P1-P3P4-P6P7-P9P10-P12
Break-Before-Make Switching
All devices feature break-before-make switching, which
is configured to break (open) the first set of contacts
before engaging (closing) the new contacts. This pre-
vents the momentary connection of the old and new sig-
nal paths to the output, reducing click-and-pop sounds.
Power-Supply Sequencing and
Overvoltage Protection
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
recycle the power and reapply properly. Connect all
ground pins first, then apply power to V
CC
, and finally
apply signals to NO_, NC_, and COM_. Follow the
reverse order upon power-down.
MAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746H
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
10 ______________________________________________________________________________________
GND
NC_
OR NO_
C
L
V
OUT
V
CC
V
OUT
CB_
OFF
ON
OFF
ΔV
OUT
Q = (ΔV
OUT
)(C
L
)
COM_
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
OFF
ON
OFF
CB_
V
IL
TO V
IH
V
CC
CB_
MAX4744/MAX4745/
MAX4744H/MAX4745H/
MAX4746H
Figure 4. Charge Injection
V
CC
GND
V
CC
COM_
NO_
MEASUREMENTS ARE STANDARDIZED AGAINST SHORT AND OPEN AT SOCKET TERMINALS.
OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINALS.
ON-LOSS IS MEASURED BETWEEN COM_ AND ON NO_ OR NC_ TERMINAL ON EACH SWITCH.
CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL.
SIGNAL DIRECTION THROUGH SWITCH IS REVERSED; WORST VALUES ARE RECORDED.
NC_
10nF
V
IN
V
OUT
NETWORK
ANALYZER
50Ω 50Ω
50Ω 50Ω
MEAS REF
MAX4744
MAX4744H
MAX4746H
CB_
0V OR
V
CC
OFF-ISOLATION = 20log
OFF-LOSS = 20log
CROSSTALK = 20log
V
IN
V
OUT
V
IN
V
OUT
V
IN
V
OUT
Figure 5. Off-Isolation, On-Loss, and Crosstalk
Test Circuits/Timing Diagrams
MAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746HMAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746H
______________________________________________________________________________________ 11
GND
V
IL
OR V
IH
NC_ OR
NO_
COM_
MAX4744
MAX4744H
MAX4745
MAX4745H
MAX4746H
V
CC
CAPACITANCE
ANALYZER
CB_
10nF
f = 1MHz
Figure 6. Channel Off-/On-Capacitance
CB1
CB2
NC1
NO1
NC2
NO2
COM1
COM2
MAXIM
DirectDrive™
AUDIO AMP
AUDIO
SHUNT
SWITCH
MAX4744
Typical Operating Circuit
Chip Information
PROCESS: BiCMOS
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
______________________________________________________________________________________ 11
MAX4744/MAX4744H/MAX4745/MAX4745H/MAX4746H
Low-Voltage, Dual SPDT, Audio Clickless
Switches with Negative Rail Capability
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2006 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,
go to www.maxim-ic.com/packages
.)
6, 8, 10L UDFN.EPS
EVEN TERMINAL
L
C
ODD TERMINAL
L
C
L
e
L
A
e
E
D
PIN 1
INDEX AREA
b
e
A
b
N
SOLDER
MASK
COVERAGE
A A
1
PIN 1
0.10x45∞
L
L1
(N/2 -1) x e)
XXXX
XXXX
XXXX
SAMPLE
MARKING
A1
A2
7
A
1
2
21-0164
PACKAGE OUTLINE,
6, 8, 10L uDFN, 2x2x0.80 mm
-DRAWING NOT TO SCALE-
COMMON DIMENSIONS
SYMBOL MIN. NOM.
A
0.70 0.75
A1
D 1.95 2.00
E
1.95 2.00
L
0.30 0.40
PKG. CODE N e b
PACKAGE VARIATIONS
L1
6L622-1 0.65 BSC 0.30±0.05
0.25±0.050.50 BSC8L822-1
0.20±0.030.40 BSC10L1022-1
2.05
0.80
MAX.
0.50
2.05
0.10 REF.
(N/2 -1) x e
1.60 REF.
1.50 REF.
1.30 REF.
A2
-
-DRAWING NOT TO SCALE-
A
2
2
21-0164
PACKAGE OUTLINE,
6, 8, 10L uDFN, 2x2x0.80 mm
0.15 0.20 0.25
0.020 0.025 0.035
CARDENAS
P1-P3P4-P6P7-P9P10-P12

MAX4745ELB+T

Mfr. #:
Buy MAX4745ELB+T
Manufacturer:
Maxim Integrated
Description:
Analog Switch ICs Dual SPDT Audio Clickless Switch
Lifecycle:
New from this manufacturer.
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