General Description
The MAX4594–MAX4597 single-pole/single-throw
(SPST) analog switches operate from a single +2.0V to
+5.5V supply. The MAX4594/MAX4596 switches are
normally open (NO), and the MAX4595/MAX4597 are
normally closed (NC). The MAX4596/MAX4597 pinouts
are optimized for the highest SC70 package off-isolation available.
These switches have 10Ω max on-resistance (R
ON
),
with 1.5Ω max R
ON
flatness over the analog signal
range when powered from a +5V supply. The
MAX4594–MAX4597 offer low 0.5nA leakage currents
and fast switching times less than 40ns. They are packaged in an ultra-small 5-pin SC70 and 6-pin µDFN.
________________________Applications
Cellular Phones
Battery-Operated Equipment
Audio and Video Signal Routing
Communications Circuits
PCMCIA Cards
DSL Modems
____________________________Features
♦ Available in 5-Pin SC70 and 6-Pin µDFN Packages
♦ 10Ω max On-Resistance
♦ 1.5Ω max On-Resistance Flatness
♦ Fast Switching
t
ON
= 35ns max
t
OFF
= 40ns max
♦ Guaranteed 5pC max Charge Injection
♦ +2.0V to +5.5V Single-Supply Operation
♦ 300MHz -3dB Bandwidth at +25°C
♦ TTL/CMOS-Logic Compatible
♦ -80dB Off-Isolation at 1MHz
♦ 0.5nA max Off-Leakage
♦ 0.05% THD
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.
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
________________________________________________________________ Maxim Integrated Products 1
INPUT
LOW
HIGH
SWITCH STATE
MAX4594/MAX4596
OFF
ON
MAX4595/MAX4597
ON
OFF
TOP VIEW
SWITCHES SHOWN FOR LOGIC O INPUT.
NC
IN
GND
1
5
V+
COM
MAX4595
2
3
4
COM
NO
GND
1
5
V+
IN
MAX4596
2
3
4
NO
IN
GND
1
5
V+
COM
MAX4594
2
3
4
COM
NC
GND
1
5
V+
IN
MAX4597
2
3
4
SC70 SC70 SC70 SC70
Pin Configurations/Functional Diagrams/Truth Table
19-1663; Rev 2; 2/04
Ordering Information
Pin Configurations/Functional Diagrams/Truth Table continued at end of data sheet.
PART TEMP RANGE
PIN-
TOP
MARK
MAX4594EXK-T
-40°C to +85°C5 SC70-5 AAH
MAX4594ELT-T
-40°C to +85°C
AB
MAX4595EXK-T
-40°C to +85°C5 SC70-5 AAI
MAX4595ELT-T
-40°C to +85°C
AC
MAX4596EXK-T
-40°C to +85°C5 SC70-5 AAJ
MAX4596ELT-T
-40°C to +85°C
AD
MAX4597EXK-T
-40°C to +85°C5 SC70-5 AAK
MAX4597ELT-T
-40°C to +85°C
AE
PACKAGE
6 µDFN-6
6 µDFN-6
6 µDFN-6
6 µDFN-6
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS— +5V Supply
(V+ = +4.5V to +5.5V, V
I
H
= +2.4V, VIL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +5V,
T
A
= +25°C.) (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: Voltages exceeding V+ or GND on any signal terminal are clamped by internal diodes. Limit forward-diode current to maxi-
mum current rating.
(Voltages Referenced to GND)
V+ .............................................................................-0.3V to +6V
Voltage into Any Terminal (Note 1)...............-0.3V to (V+ + 0.3V)
Continuous Current into Any Terminal..............................±20mA
Peak Current, NO, NC, or COM
(pulsed at 1ms, 10% duty cycle).................................±40mA
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C).............247mW
6-Pin µDFN (derate 2.1mW/°C above +70°C) ............168mW
Operating Temperature Range
MAX459_EXK .................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
300
CONDITIONS
V
0V+
V
COM
, VNO,
V
NC
Analog Signal Range
UNITS
MIN TYP MAXSYMBOL
PARAMETER
V+ = 4.5V, V
NO,
or
V
NC
= 3.5V;
I
COM
= 10mA
Ω
12
R
ON
6.5 10
On-Resistance
V+ = 5.5V;
V
COM
= 1V, 4.5V;
V
NO
or VNC= 4.5V, 1V
nA
I
NO(OFF)
I
NC(OFF)
NO or NC Off-Leakage
Current
-5 5
-0.5 0.01 0.5
VIN= V+, 0 µA-1 0.03 1IIH, I
IL
Input Logic Current
V0.8V
IL
Input Logic Low
TA= +25°C
TA= T
MIN
to T
MAX
VNOor V
NC
= 1.5V, 2.5V,
3.5V; V+ = 4.5V;
I
COM
= 10mA
Ω
2
R
FLAT(ON)
0.5 1.5
On-Resistance Flatness
(Note 4)
TA= T
MIN
to T
MAX
TA= +25°C
TA= +25°C
V+ = 5.5V;
V
COM
= 1V, 4.5V;
VNOor VNC= 4.5V, 1V
nACOM Off-Leakage Current
-5 5
TA= +25°C -0.5 0.01 0.5
I
COM(OFF)
V+ = 5.5V; V
COM
= 1V;
4.5V; VNOor VNC= 1V,
4.5V, or floating
nACOM On-Leakage Current
-10 10
TA= +25°C -1 0.01 1
I
COM(ON)
t
ON
VNOor V
NC
= 3V,
RL= 300Ω, CL= 35pF,
Figure 3
20 35
ns
45
t
OFF
VNOor V
NC
= 3V,
RL= 300Ω, CL= 35pF,
Figure 3
25 40
ns
50
TA= +25°C
TA= T
MIN
to T
MAX
Turn-On Time
Turn-Off Time
TA= +25°C
TA= T
MIN
to T
MAX
TA= T
MIN
to T
MAX
TA= T
MIN
to T
MAX
TA= T
MIN
to T
MAX
TA= +25°C
On-Channel -3dB
Bandwidth
BW
Signal = 0dBm, 50Ω in and
out, Figure 4
MHz
ANALOG SWITCH
V2.4V
IH
Input Logic High
DIGITAL I/O
DYNAMIC
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS— +5V Supply (continued)
(V+ = +4.5V to +5.5V, V
I
H
= +2.4V, VIL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +5V,
T
A
= +25°C.) (Notes 2, 3)
ELECTRICAL CHARACTERISTICS— +3V Supply
(V+ = +2.7V to +3.6V, VIH= +2.0V, VIL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +3.0V,
T
A
= +25°C.) (Notes 2, 3)
PARAMETER
SYMBOL MIN TYP MAX UNITS
TA= +25°C
TA= T
MIN
to T
MAX
VNOor V
NC
= 0, CL= 1nF,
Figure 2
Charge Injection
(Note 5)
Q 24 pC
TA= +25°C
TA= T
MIN
to T
MAX
30 50
Turn-Off Time t
OFF
60
Analog Signal Range
TA= +25°C
TA= T
MIN
to T
MAX
V
COM
, VNO,
V
NC
0V+
Input Logic Low
ns
Input Logic Current IIH, I
IL
-1 0.03 1
25 45
V
Turn-On Time
V
IL
t
ON
55
ns
VNOor V
NC
= 2V, RL=
300Ω, CL= 35pF, Figure 3
0.8 V
µA
CONDITIONS
VIN= V+, 0
Input Logic High V
IH
2.0
VNOor V
NC
= 2V, RL=
300Ω, CL= 35pF, Figure 3
On-Resistance
V
10 20
R
ON
25
Ω
VNOor VNC= 1.5V, I
COM
=
10mA, V+ = 2.7V
TA= +25°C
COM On-Capacitance C
COM(ON)
20 pF
V
COM
= 0, f = 1MHz,
Figure 5
TA= +25°C
Total Harmonic Distortion
Plus Noise
THD 0.05 %
V= 5Vp-p, RL= 600Ω,
f = 20Hz to 20kHz
83
MAX4596/
MAX4597
MAX4594/
MAX4595
TA= T
MIN
to T
MAX
-1 1V+ Supply Current I+ µAV+ = 5.5V, VIN= 0 or V+
Power-Supply Range V+ 2.0 5.5 V
VNOor V
NC
= 1V
RMS
,
RL= 50Ω, CL= 5pF,
f = 1MHz, Figure 4
VNOor V
NC
= 0, CL= 1nF,
Figure 2
PARAMETER SYMBOL MIN TYP MAX UNITS
NO or NC Off-Capacitance
Off-Isolation
(Note 6)
V
ISO
80
dB
C
NO(OFF)
,
C
NC(OFF)
8 pF
COM Off-Capacitance C
COM(OFF)
8
VNOor V
NC
= 0, f = 1MHz,
Figure 5
pF
V
COM
= 0, f = 1MHz,
Figure 5
CONDITIONS
Charge Injection
(Note 5)
Q 25 pCTA= +25°C
TA=
+25°C
TA= +25°C
TA= +25°C
TA= +25°C
POWER SUPPLY
ANALOG SWITCH
DIGITAL I/O
DYNAMIC
0
6
4
2
8
10
12
14
16
18
20
021345
ON-RESISTANCE vs. COM VOLTAGE
MAX4594–97 toc 01
COM VOLTAGE (V)
R
ON
(Ω)
V+ = 3V
V+ = 2V
V+ = 5V
0
2
1
4
3
6
5
7
023145
ON-RESISTANCE vs. COM VOLTAGE
(V+ = 5V)
MAX4594–97 toc 02
COM VOLTAGE (V)
R
ON
(Ω)
TA = +85°C
TA = +25°C
TA = 0°C
TA = -40°C
0
3
2
1
5
4
9
8
7
6
10
0 0.5 1.0 1.5 2.0 2.5 3.0
ON-RESISTANCE vs. COM VOLTAGE
(V+ = 3V)
MAX4594–97 toc 03
COM VOLTAGE (V)
R
ON
(Ω)
TA = +85°C
TA = +25°C
TA = 0°C
TA = -40°C
1
0.001
-40 -25 5 35 50 65 80
ON/OFF-LEAKAGE CURRENT vs.
TEMPERATURE
0.01
0.1
MAX4594-97 toc04
TEMPERATURE (°C)
ON/OFF-LEAKAGE CURRENT (nA)
-10 20
V+ = +5V
I
COM(ON)
NO, NC (OFF)
-3
-1
-2
1
0
3
2
4
0 2.01.0 3.0 4.0 5.0
CHARGE INJECTION
vs. COM VOLTAGE
MAX4594–97 toc 05
COM VOLTAGE (V)
CHARGE INJECTION (pC)
V+ = 5V
V+ = 3V
0.0001
0.001
0.1
0.01
1
10
-40 10-15 35 60 85
SUPPLY CURRENT vs. TEMPERATURE
MAX4594–97 toc 06
TEMPERATURE (°C)
SUPPLY CURRENT (nA)
V+ = +5V
V+ = +3V
Typical Operating Characteristics
(V+ = +5V, TA= +25°C, unless otherwise noted.)
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
4 _______________________________________________________________________________________
Note 2: Parameters are 100% tested at +25°C only, and guaranteed by correlation at the full-rated temperature.
Note 3: Algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 4: Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the
specified analog signal ranges.
Note 5: Guaranteed by design.
Note 6: Off-Isolation = 20log
10(VCOM
/ VNO), V
COM
= output, VNO= input to off switch.
ELECTRICAL CHARACTERISTICS— +3V Supply (continued)
(V+ = +2.7V to +3.6V, VIH= +2.0V, VIL= +0.8V, TA= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V+ = +3.0V,
T
A
= +25°C.) (Notes 2, 3)
V+ = 3.6V, VIN= 0 or V+
µA
I+ -1 1TA= T
MIN
to T
MAX
V+ Supply Current
CONDITIONS
UNITS
MIN TYP MAXSYMBOL
PARAMETER
POWER SUPPLY
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
_______________________________________________________________________________________ 5
0
0.6
0.4
0.2
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.0 3.02.5 3.5 4.0 4.5 5.0
LOGIC THRESHOLD vs. SUPPLY VOLTAGE
MAX4594–97 toc 07
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD (V)
V
IH
V
IL
5
15
10
25
20
35
30
40
2.0 3.0 3.52.5 4.0 4.5 5.0
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
MAX4594-97 toc 08
SUPPLY VOLTAGE (V)
t
ON
/t
OFF
(ns)
t
ON
t
OFF
10
16
14
12
18
20
22
24
26
28
30
-40 10-15 35 60 85
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
MAX4594–97 toc 09
TEMPERATURE (°C)
t
ON
/t
OFF
(ns)
t
ON
t
OFF
FREQUENCY RESPONSE
MAX4594–97 toc 10
0
-110
0.01 0.1 1 10 100 1000
FREQUENCY (MHz)
LOSS (dB)
-70
-50
-30
-10
-90
OFF-ISOLATION
ON-LOSS
0.01 10.1 10 100
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
MAX4594–97 toc 11
FREQUENCY (kHz)
THD + N (%)
0.1
0.0001
0.01
0.001
Typical Operating Characteristics (continued)
(V+ = +5V, TA= +25°C, unless otherwise noted.)
Pin Description
Note: NO, NC, and COM pins are identical and interchangeable. Any pin may be considered as an input or an output; signals pass
equally well in both directions.
PIN
MAX4594 MAX4595 MAX4596 MAX4597
SC70
NAME
FUNCTION
11112222COMAnalog Switch, Common
22—— 44—— NO Analog Switch, Normally Open
33333333GNDGround
44441111 INDigital Control Input
56565656 V+Positive Supply Voltage
—— 22——44NC Analog Switch, Normally Closed
—5—5—5—5N.C. No Connection. Not internally connected.
EP EP EP EP EP EP EP EP PAD Exposed Pad. Connect to GND (µDFN only.)
µDFN SC70 µDFN SC70 µDFN SC70 µDFN
Applications Information
Analog Signal Levels
Analog signals can range over the supply voltage (V+ to
GND) with on-resistance changing very little over the
entire range (see Typical Operating Characteristics). The
MAX4594–MAX4597 are bidirectional, so the NO, NC,
and COM pins can be used either as inputs or outputs.
Power-Supply Sequencing and
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Always apply V+ before applying
analog signals or logic inputs, especially if the analog
or logic signals are not current limited. If this sequencing is not possible, and if the analog or logic inputs are
not current limited to <20mA, add a small-signal diode
(D1) as shown in Figure 1. If the analog signal can dip
below GND, add D2. Adding protection diodes
reduces the analog signal range to a diode drop (about
0.7V) below V+ for D1 or to a diode drop above ground
for D2. The addition of diodes does not affect leakage.
On-resistance increases by a small amount at low supply voltages. Maximum supply voltage (V+) must not
exceed 6V.
Protection diodes D1 and D2 also protect against some
overvoltage situations. A fault voltage up to the absolute
maximum rating at an analog signal input does not damage the device, even if the supply voltage is below the
signal voltage.
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
6 _______________________________________________________________________________________
∆V
OUT
V+
0V
V
IN
V
OUT
MAX4595/MAX4597
MAX4594/MAX4596
∆V
OUT
IS THE MEASURED VOLTAGE DUE TO CHARGE TRANSFER
ERROR Q WHEN THE CHANNEL TURNS OFF.
Q = ∆V
OUT x CL
V+
V
OUT
GND
V+
IN
NO
or
NC
COM
V
NO
or VNC = 0
50Ω
MAX4594
MAX4595
MAX4596
MAX4597
C
L
1000pF
V
IN
Figure 2. Charge Injection
Test Circuits/Timing Diagrams
POSITIVE SUPPLY
COM
NO
OR
NC
D2
D1
GND
V
g
V+
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
_______________________________________________________________________________________ 7
50%
t
OFF
t
ON
V
OUT
V
IN
V+
0V
V+
V
OUT
GND
V+
IN
NO
COM
V
NO
50Ω
MAX4594
MAX4596
R
L
300Ω
R
L
300Ω
C
L
35pF
C
L
35pF
90% 90%
0V
V
IN
50%
t
ON
t
OFF
V
OUT
V
IN
V+
0V
V+
V
OUT
GND
V+
IN
NC
COM
V
NC
50Ω
MAX4595
MAX4597
90% 90%
0V
V
IN
tr ≤ 5ns
t
f
≤ 5ns
Figure 3. Switching Times
Test Circuits/Timing Diagrams (continued)
V+
V+
V
OUT
GND
V+
IN
NO
OR
NC
COM
V
IN
MAX4594
MAX4595
MAX4596
MAX4597
OFF-ISOLATION = 20log
V
OUT
V
IN
ON-LOSS = 20log
V
OUT
V
IN
NETWORK
ANALYZER
50Ω
50Ω 50Ω
50Ω
MEAS REF
10nF
Figure 4. Off-Isolation and On-Channel Bandwidth
CAPACITANCE
METER
NC OR
NO
COM
GND
IN
0 OR
2.4V
10nF
V+
f = 1MHz
V+
MAX4594
MAX4595
MAX4596
MAX4597
Figure 5. Channel On-/Off-Capacitance
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
8 _______________________________________________________________________________________
5
N.C.
5
N.C.
5
N.C.
5
N.C.
TOP VIEW
NC
IN
GND
1
6
V+
COM
MAX4595
2
3
4
COM
NO
GND
1
6
V+
IN
MAX4596
2
3
4
NO
IN
GND
1
6
V+
COM
MAX4594
2
3
4
COM
NC
GND
1
6
V+
IN
MAX4597
2
3
4
µDFN µDFN µDFN µDFN
Pin Configurations/Functional Diagrams/Truth Table (continued)
Chip Information
TRANSISTOR COUNT: 50
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
_______________________________________________________________________________________ 9
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
.)
6L UDFN.EPS
L
TOP VIEW
D
E
SIDE VIEW
A1
PIN 1
INDEX AREA
A
A 0.64
COMMON DIMENSIONS
PIN 1
0.075x45°
BOTTOM VIEW
L1
32
MIN.
1
e
6
5
b
4
SECTION A-A
b
L2
A A
NOM.
0.72 0.80
MAX.
0.20--A1 --
1.501.45D 1.55
1.000.95E 1.05
0.350.30L 0.40
----L1 0.08
----L2 0.05
0.200.17b 0.23
0.50 BSC.e
AAA
TOPMARK
2
1
-DRAWING NOT TO SCALE-
DOCUMENT CONTROL NO.APPROVAL
TITLE:
REV.
PACKAGE OUTLINE, 6L uDFN, 1.5x1.0x0.8mm
21-0147
1
1
C
3
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.
10 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
MAX4594–MAX4597
Low-Voltage, Single-Supply,
10Ω SPST CMOS Analog Switches
Package Information (continued)
(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
.)
SC70, 5L.EPS
PACKAGE OUTLINE, 5L SC70
21-0076
1
1
C
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