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.
General Description
The MAX4599 single-pole/double-throw (SPDT) switch
operates from a +2.0V to +5.5V single supply. It offers
60Ωmax on-resistance (RON) at +5V and fast switching
times (tON = 30ns max, tOFF = 25ns max).
The MAX4599 features excellent RON flatness (4Ωmax)
and matching (1Ωmax) between channels. This device
also offers 5pC max charge injection.
The MAX4599 is available in tiny 6-pin SC70, µDFN, and
SOT23 packages.
Applications
Battery-Operated Equipment
Audio and Video Signal Routing
Cellular Phones
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
Features
♦Available in 6-Pin SC70 Package
♦60Ωmax (40Ωtyp) On-Resistance
♦1Ωmax (0.2Ωtyp) RON Matching Between
Channels
♦4Ωmax (2.5Ωtyp) RON Flatness
♦Fast Switching: tON = 30ns (max)
tOFF = 25ns (max)
♦Guaranteed 5pC max Charge Injection
♦+2.0V to +5.5V Single-Supply Operation
♦200MHz -3dB Bandwidth
♦Low ±0.5nA Leakage Current at +25°C
♦Break-Before-Make Switching
♦TTL/CMOS-Logic Compatible
♦-76dB Off-Isolation at 1MHz
♦0.12% Total Harmonic Distortion
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
________________________________________________________________ Maxim Integrated Products 1
SC70-6/µDFN-6/SOT23-6
5
4
16
2
3
NO
COM
NC
GND
V+
IN
MAX4599
MAX4599
IN
0
NC
ON
NO
OFF
1OFFON
SWITCH IS SHOWN FOR "0" INPUT.
19-1637; Rev 2; 2/04
Pin Configuration/Functional Diagram/Truth Table
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
TOP
MARK
MAX4599EXT-T
-40°C to +85°C
6 SC70-6 AAF
MAX4599EUT-T
-40°C to +85°C 6 SOT23-6
AAHC
MAX4599ELT-T
-40°C to +85°C
6 µDFN-6 AA
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
2_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS— Single +5V Supply
(V+ = +4.5V to +5.5V, VINH = +2.4V, VINL = +0.8V, TA= TMIN to TMAX, unless otherwise noted.) (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.
Voltage Referenced to GND
V+.........................................................................-0.3V to +6V
IN, COM, NO, NC (Note 1)...........................-0.3V to (V+ + 0.3V)
Continuous Current (any terminal)....................................±20mA
Peak Current, COM, NO, NC
(pulsed at 1ms, 10% duty cycle)..................................±40mA
Continuous Power Dissipation (TA= +70°C)
6-Pin SC70-6 (derate 3.1mW/°C above +70°C)...........245mW
6-Pin µDFN-6 (derate 2.1mW/°C above +70°C) ..........168mW
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) ........571mW
Operating Temperature Range
MAX4599E_T ...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Signals on NO, NC, COM, or IN exceeding V+ or GND are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
DYNAMIC
DIGITAL I/O
ANALOG SWITCH
V+ = 4.5V, ICOM = 1mA,
VNO or VNC = 3.5V
CONDITIONS
V
0V+
VCOM,
VNO, VNC
Analog Signal Range
Ω
40 60
RON
On-Resistance 65
UNITSMIN TYP MAXSYMBOLPARAMETER
TA= +25°C
TA= TMIN to TMAX
TA= TMIN to TMAX
V+ = 4.5V, ICOM = 1A,
VNO or VNC = 3.5V
TA= +25°C Ω
0.2 1
∆RON
On-Resistance Match Between
Channels (Note 4) 2
TA= TMIN to TMAX
V+ = 4.5V; ICOM = 1mA;
VNO or VNC = 1V, 2.0V,
3.5V
TA= +25°C
Ω
2.5 4
RFLAT(ON)
On-Resistance Flatness
(Note 5) 5
V+ = 5.5V; VCOM = 1V,
4.5V; VNO or VNC = 4.5V,
1V
TA= +25°C
nA
-0.5 0.01 0.5
INO(OFF),
INC(OFF)
NO, NC Off-Leakage Current
(Note 6)
TA= TMIN to TMAX
V+ = 5.5V; VCOM = 1V,
4.5V; VNO or VNC = 1V,
4.5V, or floating
TA= +25°C
nA
-1 0.01 1
ICOM(ON)
COM On-Leakage Current
(Note 6) -10 10
TA= TMIN to TMAX -5 5
V
2.4
VIH
Input Logic High
V
0.8
VIL
Input Logic Low
VNO, VNC = 3V;
RL= 1kΩ; CL= 35pF;
Figure 2
TA= +25°C ns
25 30
tON
Turn-On Time
TA= TMIN to TMAX 40
ANALOG SWITCH
DYNAMIC
DIGITAL I/O
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ =+4.5V to +5.5V, VINH = +2.4V, VINL = +0.8V, TA= TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.6V, VINH = +2.0V, VINL = +0.8V, TA=TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
VGEN = 0, RGEN = 0,
CL= 1.0nF, Figure 4
CL= 5pF; RL= 50Ω;
f = 1MHz; VNO, VNC =
1VRMS; Figure 5
VNO, VNC = 3V;
RL= 1kΩ; CL= 35pF;
Figure 3
Signal = 0dBm,
50Ωin and out, Figure 5
CONDITIONS
pC
35
QCharge Injection (Note 6)
dB
-76
VISO
Off-Isolation (Note 7)
ns
10
tBBM
Break-Before-Make
MHz
200
BWOn-Channel -3dB Bandwidth
UNITSMIN TYP MAXSYMBOLPARAMETER
VNO, VNC = 3V;
RL= 1kΩ; CL= 35pF;
Figure 2
TA= +25°C 20 25
tOFF
Turn-Off Time
TA= TMIN to TMAX
ns
30
NO, NC Off-Capacitance CNO(OFF),
CNC(OFF)
VNO, VNC = GND;
f = 1MHz; Figure 6 8pF
COM Off-Capacitance CCOM(OFF) VCOM = GND, f = 1MHz,
Figure 6 8pF
Switch On-Capacitance C(ON)
VCOM = VNO,
VNC = GND, f = 1MHz,
Figure 6
20 pF
Total Harmonic Distortion THD 0.12 %
Power-Supply Range V+ 2.0 5.5 V
Positive Supply Current I+ V+ = 5.5V, VIN = 0 or V+ -1 0.001 1 µA
TA= +25°C
RL= 600Ω, VIN = 5Vp-p,
f = 20Hz to 20kHz
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
TA= +25°C
SUPPLY
TA= TMIN to TMAX 1
V+ = 2.7V, ICOM = 1mA,
VNO or VNC = 1V
CONDITIONS
V
0V+
VCOM,
VNO, VNC
Analog Signal Range
Ω
60 95
RON
On-Resistance 105
UNITSMIN TYP MAXSYMBOLPARAMETER
TA= +25°C
TA= TMIN to TMAX
V
2.0
VIH
Input Logic High
V
0.8
VIL
Input Logic Low
ANALOG SWITCH
DIGITAL I/O
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
4_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(V+ = +2.7V to +3.6V, VINH = +2.0V, VINL = +0.8V, TA=TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
Note 2: Parameters are 100% tested at +25°C only and guaranteed by correlation at the full rated temperature.
Note 3: The algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in
this data sheet.
Note 4: ∆RON = RON(MAX) - RON(MIN).
Note 5: Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 6: Guaranteed by design.
Note 7: Off-Isolation = 20log10 (VCOM / VNO), VCOM = output, VNO = input to off switch.
VGEN = 0, RGEN = 0,
CL= 1.0nF, Figure 4
VNO, VNC = 2V;
RL= 1kΩ; CL= 35pF;
Figure 3
CONDITIONS
pC
25
QCharge Injection (Note 6)
ns
1
tBBM
Break-Before-Make
UNITSMIN TYP MAXSYMBOLPARAMETER
VNO, VNC = 2V;
RL= 1kΩ; CL= 35pF;
Figure 2
TA= +25°C 40 45
tON
Turn-On Time
TA= TMIN to TMAX
ns
55
VNO, VNC = 2V;
RL= 1kΩ; CL= 35pF;
Figure 2
TA= +25°C 30 35
tOFF
Turn-Off Time
TA= TMIN to TMAX
ns
40
Positive Supply Current I+ V+ = 3.6V, VIN = 0 or V+ -1 0.001 1 µA
TA= +25°C
TA= +25°C
13
DYNAMIC
SUPPLY
TA= TMIN to TMAX
ELECTRICAL CHARACTERISTICS—Single +2.5V Supply
(V+ = +2.5V, VINH = +2.0V, VINL = +0.6V, TA=TMIN to TMAX, unless otherwise noted.) (Notes 2, 3)
V+ = 2.5V, ICOM = 1mA,
VNO or VNC = 1V
CONDITIONS
V
0V+
VCOM,
VNO, VNC
Analog Signal Range
Ω
65 110
RON
On-Resistance 120
UNITSMIN TYP MAXSYMBOL
PARAMETER
TA= +25°C
TA= TMIN to TMAX
V
2.0
VIH
Input Logic High
V
0.6
VIL
Input Logic Low
VNO, VNC = 2V;
RL= 1kΩ; CL= 35pF;
Figure 3
TA= +25°C ns
45 50
tON
Turn-On Time TA= TMIN to TMAX 60
VNO, VNC = 2V;
RL= 1kΩ; CL= 35pF;
Figure 3
TA= +25°C ns
30 35
tOFF
Turn-Off Time TA= TMIN to TMAX 45
ANALOG SWITCH
DYNAMIC
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
_______________________________________________________________________________________ 5
0
60
40
20
80
A
B
C
D
100
120
02.01.50.5 1.0 2.5 3.0 3.5 4.0 4.5 5.0
ON-RESISTANCE vs. COM VOLTAGE
MAX4599 toc01
VCOM (V)
RON (Ω)
A: V+ = +2V
B: V+ = +2.5V
C: V+ = +3V
D: V+ = +4.5V
E: V+ = +5V
E
0
30
20
10
40
50
60
0 2.01.50.5 1.0 2.5 3.0 3.5 4.0 4.5 5.0
ON-RESISTANCE vs. COM VOLTAGE
(V+ = +5V)
MAX4599 toc02
VCOM (V)
RON (Ω)
TA = +85°C
TA = +25°C
TA = -40°C
0
30
20
10
40
50
60
70
80
02.01.50.5 1.0 2.5 3.0
ON-RESISTANCE vs. COM VOLTAGE
(V+ = +3V)
MAX4599 toc02
VCOM (V)
RON (Ω)
TA = +85°C
TA = +25°C
TA = -40°C
1
0.001 -40 -25 5 35 50 65 80
ON/OFF-LEAKAGE CURRENT vs.
TEMPERATURE
0.01
0.1
MAX4599 toc04
TEMPERATURE (°C)
ON/OFF-LEAKAGE (nA)
-10 20
V+ = +5V
ICOM(ON)
NO, NC(OFF)
-2
0
2
4
6
8
10
12
14
012345
CHARGE INJECTION vs. COM VOLTAGE
MAX4599 toc05
VCOM (V)
Q (pC)
V+ = +5V
V- =+3V
10
0.01 -40 -30 -10 10 20 30 40 50 60 70 80
SUPPLY CURRENT vs. TEMPERATURE
0.1
1
MAX4599 toc06
TEMPERATURE (°C)
I+ (nA)
-20 0
V+ = 5V
V+ = 3V
0
20
10
40
30
50
60
2.0 3.5 4.02.5 3.0 4.5 5.0 5.5
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
MAX4599 toc08
VSUPPLY (V)
tON/tOFF (ns)
tON
tOFF
0
25
20
15
10
5
35
30
40
45
-40 -10 0-30 -20 10 20 30 40 50 60 70 80
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
MAX4599 toc09
TEMPERATURE (°C)
tON/tOFF (ns)
tON
tOFF
V+ = +5V
Typical Operating Characteristics
(TA = +25°C, unless otherwise noted.)
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 MAX4599 is 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 sequenc-
ing 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 sup-
ply 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.
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
6_______________________________________________________________________________________
-95
0.01 0.1 1 10 100 200
FREQUENCY RESPONSE
-75
MAX4599 toc10
FREQUENCY (MHz)
LOSS (dB)
-55
-35
-15
-25
-45
-65
-85
-5 ON-RESPONSE
OFF-ISOLATION
Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
1
0.01 0.01 0.1 100110
TOTAL HARMONIC DISTORTION PLUS
NOISE vs. FREQUENCY
0.1
MAX4599 toc11
FREQUENCY (kHz)
THD + N (%)
RL = 600Ω
VIN = 5VP-P
VIN = 3VP-P
NAME FUNCTION
1 IN Digital Control Input
2V+ Positive Supply Voltage
PIN
3GND Ground
4NC Analog Switch Normally Closed
6NO Analog Switch Normally Open
5COM Analog Switch Common
Pin Description
POSITIVE SUPPLY
COM
NO
OR
NC
D2
D1
GND
Vg
V+
Figure 1. Overvoltage Protection Using Two External Blocking
Diodes
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
_______________________________________________________________________________________ 7
tr < 20ns
tf < 20ns
50%
0
LOGIC
INPUT
RL
1k
COM
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
VOUT = VCOM ( RL )
RL + RON
SWITCH
INPUT
IN
+3V
tOFF
0
NO
OR NC
SWITCH
OUTPUT
0.9 x V0UT 0.9 x VOUT
tON
VOUT
SWITCH
OUTPUT
LOGIC
INPUT
LOGIC INPUT WAVEFORMS INVERTED FOR SWITCHES
THAT HAVE THE OPPOSITE LOGIC SENSE.
V+
CL
35pF
V+
VOUT
MAX4599
Figure 2. Switching Time
Test Circuits/Timing Diagrams
VGEN GND
COM
CL
VOUT
V+ VOUT
IN OFF ON OFF
∆VOUT
Q = (∆VOUT)(CL)
NC
OR NO
IN DEPENDS ON SWITCH CONFIGURATION;
INPUT POLARITY DETERMINED BY SENSE OF SWITCH.
OFF ON OFF
IN
VIN = V+
V+
RGEN
IN
MAX4599
Figure 4. Charge Injection
50%
+3V
0
LOGIC
INPUT
SWITCH
OUTPUT
(VOUT)
0.9 x VOUT
0.9 x VOUT
tBBM
LOGIC
INPUT
RL
1k
GND
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
NO
IN
NC VOUT
V+
V+
CL
35pF
+3V COM
MAX4599
Figure 3. Break-Before-Make Interval
MAX4599
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
8_______________________________________________________________________________________
Figure 6. Channel On/Off-Capacitance
IN 0 OR
2.4V
SIGNAL
GENERATOR 0dBm
V+
10nF
ANALYZER NC
OR NO
RL
GND
COM V+
MAX4599
CAPACITANCE
METER NC OR
NO
COM
GND
IN 0 OR
2.4V
10nF V+
f = 1MHz
V+
MAX4599
Figure 5. Off-Isolation/On-Channel Bandwidth
Test Circuits/Timing Diagrams (continued)
Chip Information
TRANSISTOR COUNT: 89
SC70, 6L.EPS
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.)
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9
©2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
Low-Voltage, Single-Supply,
SPDT Analog Switch in SC70
MAX4599
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.)
6L UDFN.EPS
1
1
REV.DOCUMENT CONTROL NO.APPROVAL
PROPRIETARY INFORMATION
TITLE:
21-0147
B
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
65
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--
e--
