MAX4741/42/43 DS
General Description
The MAX4741/MAX4742/MAX4743 are low on-resis-
tance, low-voltage, dual single-pole/single-throw (SPST)
analog switches that operate from a single +1.6V to
+3.6V supply. These devices have fast switching
speeds (t
ON
= 24ns, t
OFF
= 16ns max), handle Rail-to-
Rail
analog signals, and consume less than 1W of
quiescent power. The MAX4743 has break-before-
make switching.
When powered from a +3V supply, the MAX4741/
MAX4742/MAX4743 feature low 0.8
(max) on-resis-
tance (R
ON
), with 0.08
(max) R
ON
matching and
0.18
R
ON
flatness. The digital logic input is 1.8V
CMOS compatible when using a single +3V supply.
The MAX4741 has two normally open (NO) switches,
the MAX4742 has two normally closed (NC) switches,
and the MAX4743 has one NO switch and one NC
switch. The MAX4741/MAX4742/MAX4743 are available
in 8-pin SOT23 and 8-pin MAX packages.
Applications
Power Routing
Battery Powered Systems
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
Features
o Low R
ON
:
0.8
max (+3V Supply)
2.5
max (+1.8V Supply)
o 0.18 max R
ON
Flatness (+3V Supply)
o +1.6V to +3.6V Single-Supply Operation
o Available in SOT23 and MAX Packages
o High-Current Handling Capacity (150mA
continuous)
o 1.8V CMOS Logic Compatible (+3V Supply)
o Fast Switching: t
ON
= 24ns, t
OFF
= 16ns
MAX4741/MAX4742/MAX4743
0.8
, Low-Voltage, Single-Supply Dual SPST
Analog Switches
________________________________________________________________ Maxim Integrated Products
1
4
GND
5
NO2
3
IN2
6
COM2
1
2
COM1
NO1
8
7
V+
IN1
TOP VIEW
MAX
MAX4741
4
GND
5
NC2
3
IN2
6
COM2
1
2
COM1
NO1
8
7
V+
IN1
MAX
MAX4743
4
GND
5
NC2
3
IN2
6
COM2
1
2
COM1
NC1
8
7
V+
IN1
MAX
MAX4742
Pin Configurations
Ordering Information
19-2116; Rev 0; 7/01
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
PART
TEMP. RANGE
PIN-
PACKAGE
TOP
MARK
MAX4741EKA
-40
C to +85C
8 SOT23-8
AAIY
MAX4741EUA
-40
C to +85C
8
MAX
--
MAX4742EKA
-40
C to +85C
8 SOT23-8
AAIZ
MAX4742EUA
-40
C to +85C
8
MAX
--
MAX4743EKA
-40
C to +85C
8 SOT23-8
AAJA
MAX4743EUA
-40
C to +85C
8
MAX
--
SOT23-8 Pin Configurations continued at end of data sheet.
Rail-to-Rail is a registered trademark of Nippon Motorola, Inc.
MAX4741/MAX4742/MAX4743
0.8
, Low-Voltage, Single-Supply Dual SPST
Analog Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +3.6V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = +3.0V,
T
A
= +25C.) (Notes 2, 3)
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Note 1: Signals on COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward current to
maximum current rating.
Voltages Referenced to GND
V+, IN_......................................................................-0.3V to +4V
COM_, NO_, NC_ (Note 1) ...........................-0.3V to (V+ + 0.3V)
Continuous Current COM_ , NO_, NC_ .........................150mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms 10% duty cycle)..................................300mA
Continuous Power Dissipation (T
A
= +70C)
8-Pin SOT23 (derate 7.52mW/C above +70C)...........602mW
8-Pin MAX (derate 4.5mW/C above +70C) ..............362mW
Operating Temperature Range ...........................-40C to +85C
Maximum Junction Temperature .....................................+150C
Storage Temperature Range .............................-65C to +150C
Lead Temperature (soldering, 10s) .................................+300C
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
0
V+
V
+25C
0.5
0.8
On-Resistance
R
ON
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1.5V
T
MIN
to T
MAX
0.9
+25C
0.05
0.08
On-Resistance Match
Between Channels (Note 4)
R
ON
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1.5V
T
MIN
to T
MAX
0.09
+25C
0.05
0.18
On-Resistance Flatness
(Note 5)
R
FLAT(ON)
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1V, 1.5V, 2V
T
MIN
to T
MAX
0.20
+25C
-1
1
NO_ or NC_ Off-Leakage
Current
I
NO_(OFF)
,
I
NC_(OFF)
V+ = 3.3V,
V
COM
_ = 0.3V, 3V,
V
NO
_ or V
NC
_ = 3V, 0.3V
T
MIN
to T
MAX
-5
5
nA
+25C
-1
1
COM_ Off-Leakage Current
I
COM_(OFF)
V+ = 3.3V,
V
COM
_ = 0.3V, 3V
V
NO
_ or V
NC
_ = 3V, 0.3V or
floating
T
MIN
to T
MAX
-5
5
nA
+25C
-2
2
COM_ On-Leakage Current
I
COM_(ON)
V+ = 3.3V,
V
COM
_ = 3V, 0.3V;
V
NO
_ or V
NC
_ = 3V, 0.3V or
floating
T
MIN
to T
MAX
-10
10
nA
MAX4741/MAX4742/MAX4743
0.8
, Low-Voltage, Single-Supply Dual SPST
Analog Switches
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +3.6V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = +3.0V,
T
A
= +25C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
SWITCH DYNAMIC CHARACTERISTICS
+25C
18
24
Turn-On Time
t
ON
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
28
ns
+25C
12
16
Turn-Off Time
t
OFF
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
18
ns
+25C
6
Break-Before-Make (Note 6)
t
BBM
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1 (MAX4743)
T
MIN
to T
MAX
1
ns
Charge Injection
Q
V
GEN
= 0, R
GEN
= 0, C
L
=
1.0nF, Figure 3
+25C
28
pC
NO_ or NC_ Off-
Capacitance
C
OFF
f = 1MHz, Figure 4
+25C
32
pF
COM_ Off-Capacitance
C
COM_(OFF)
f = 1MHz, Figure 4
+25C
32
pF
COM_ On-Capacitance
C
COM_(ON)
f = 1MHz, Figure 4
+25C
44
pF
-3dB On-Channel Bandwidth
BW
Signal = 0, R
IN
= R
OUT
=
50
, C
L
= 5pF, Figure 2
100
MHz
Off-Isolation (Note 7)
V
ISO
f = 1M H z, V
C OM
_ = 1V
RM S
, R
L
= 50
, C
L
= 5p F, Fi g ur e 2
+25C
-55
dB
Crosstalk (Note 8)
f = 1M H z, V
C OM
_ = 1V
RM S
, R
L
= 50
, C
L
= 5p F, Fi g ur e 2
+25C
-110
dB
Total Harmonic Distortion
THD
f = 20Hz to 20kHz, V
COM
_ =
2Vp-p, R
L
= 32
+25C
0.02
%
LOGIC INPUT
Input Logic High
V
IH
1.4
V
Input Logic Low
V
IL
0.5
V
Input Leakage Current
I
IN
V
IN
_ = 0 or V+
-1
0.005
1
A
POWER SUPPLY
Power-Supply Range
V+
1.6
3.6
V
Positive Supply Current
I+
V+ = 3.6V, V
IN
_ = 0 or V+,
all channels on or off
+25C
0.2
A
MAX4741/MAX4742/MAX4743
0.8
, Low-Voltage, Single-Supply Dual SPST
Analog Switches
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--Single +1.8V Supply
(V+ = +1.8V, V
IH
= +1.0V, V
IL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
0
V+
V
+25C
1.3
2.5
On-Resistance
R
ON
I
COM
_ = 10mA,
V
NO
_ or V
NC
_ = 0.9V
T
MIN
to T
MAX
5
+25C
-1
1
NO_ or NC_ Off-Leakage
Current
I
NO_(OFF)
,
I
NC_(OFF)
V
COM
_ = 0.3V, 1.5V;
V
NO
_ or V
NC
_ = 1.5V,
0.3V
T
MIN
to T
MAX
-5
5
nA
+25C
-1
1
COM_ Off-Leakage Current
I
COM_(OFF)
V
COM
_ = 0.3V, 1.5V;
V
NO
_ or V
NC
_ = 1.5V,
0.3V
T
MIN
to T
MAX
-5
5
nA
+25C
-2
2
COM_ On-Leakage Current
I
COM_(ON)
V
COM
_
= 0.3V, 1.5V,
V
NO
_ or V
NC
_ = 0.3V,
1.5V, or floating
T
MIN
to T
MAX
-10
10
nA
SWITCH DYNAMIC CHARACTERISTICS
+25C
25
35
Turn-On Time
t
ON
V
NO
_, V
NC
_ = 1.5V,
RL = 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
40
ns
+25C
16
25
Turn-Off Time
t
OFF
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
30
ns
+25C
10
Break-Before-Make (Note 6)
t
BBM
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1 (MAX4743)
T
MIN
to T
MAX
1
ns
Charge Injection
Q
V
GEN
= 0, R
GEN
= 0,
C
L
= 1nF, Figure 2
+25C
16
pC
Off-Isolation (Note 7)
V
ISO
f = 1M H z, V
N O
_ = V
N C
_
= 1V
RM S
, R
L
= 50
,
C
L
= 5p F, Fi g ur e 2
+25C
-50
dB
Crosstalk (Note 8)
f = 1M H z, V
C OM
_ = 1V
RM S
,
R
L
= 50
,
C
L
= 5p F, Fi g ur e 2
+25C
-110
dB
MAX4741/MAX4742/MAX4743
0.8
, Low-Voltage, Single-Supply Dual SPST
Analog Switches
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS--Single +1.8V Supply (continued)
(V+ = +1.8V, V
IH
= +1.0V, V
IL
= 0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
LOGIC INPUT
Input Logic High
V
IH
1
V
Input Logic Low
V
IL
0.4
V
Input Leakage Current
I
IN
V
IN
_ = 0 or V+
-1
1
A
Note 2: The algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is
used in this data sheet.
Note 3: SOT23 packaged parts are 100% tested at +25C. Limits across the full temperature range are guaranteed by design and
correlation. MAX packaged parts -40C specifications are guaranteed by design.
Note 4:
R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 5: Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 6: Guaranteed by design.
Note 7: Off-Isolation = 20log
10
(V
COM
_/V
NO
_), V
COM
_ = output, V
NO
_ = input to off switch.
Note 8: Between two switches.
Typical Operating Characteristics
(T
A
= +25C, unless otherwise noted.)
0
0.4
0.2
0.8
0.6
1.2
1.0
1.4
0
0.8 1.2
0.4
1.6 2.0 2.4 2.8 3.2 3.6
ON-RESISTANCE vs. V
COM
MAX4741 toc01
V
COM
(V)
R
ON
(
)
V+ = +1.8V
V+ = +2.0V
V+ = +2.5V
V+ = +2.7V
V+ = +3.0V
V+ = +3.3V
V+ = +3.6V
I
COM
= 100mA
0
0.2
0.1
0.4
0.3
0.6
0.5
0.7
0
0.6 0.9
0.3
1.2 1.5 1.8 2.1 2.4 2.7
ON-RESISTANCE vs. V
COM
AND TEMPERATURE
MAX4741 toc02
V
COM
(V)
R
ON
(
)
T
A
= +85
C
T
A
= +25
C
T
A
= -40
C
V+ = +2.7V
I
COM
= 100mA
8
16
12
24
20
28
32
40
36
44
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
TURN-ON/OFF TIME
vs. SUPPLY VOLTAGE
MAX4741 toc03
V+ (V)
t
ON
/t
OFF
(ns)
t
ON
t
OFF
PDF 
ZIP