19-1880; Rev 1; 1/07
25Ω SPST Analog Switches in SOT23-6
General Description
The MAX4647/MAX4648 are dual-supply single-pole/sin-
gle-throw (SPST) switches. On-resistance is 25Ω max and
flat (2Ω max) over the specified signal range. Each switch
can handle rail-to-rail analog signals. Off-leakage current
is only 1nA max at +25°C. They conduct analog or digital
signals equally well in either direction. The primary appli-
cation areas are in the switching and routing of signals in
telecommunications and test equipment.
The MAX4647/MAX4648 are single SPST analog switches.
The MAX4647 has one normally closed (NC) switch, and
the MAX4648 has one normally open (NO) switch. These
devices operate from a single +9V to +36V supply or from
dual ±4.5V to ±20V supplies. The MAX4647/MAX4648 are
available in tiny 6-pin SOT23 packages.
____________________________Features
♦
Low On-Resistance 25Ω max (±15V Supplies)
♦
Guaranteed R
ON
Flatness Over Specified Signal
Range (2Ω max)
♦
V
L
Logic Supply Not Required
♦
Rail-to-Rail Signal Handling
♦
±15V and Single 12V Supply Operation
♦
Low Leakage (1nA max)
♦
Fast Switching Speeds
t
ON
= 100ns
t
OFF
= 100ns
MAX4647/MAX4648
________________________Applications
PBX, PABX Systems
Communication Systems
DSL
Test Equipment
Avionics
Audio Systems
Redundant Systems
Relay Replacement
PC Multimedia Boards
PART
Ordering Information
TEMP
RANGE
PIN-
TOP
PKG
PACKAGE MARK CODE
AARV U6SN-1
AARW U6SN-1
MAX4647EUT-T+
-40°C to +85°C 6 SOT23
MAX4648EUT-T+
-40°C to +85°C 6 SOT23
+Denotes
a lead-free package.
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
NC
1
MAX4647
6
COM
NO
1
MAX4648
6
COM
V-
2
5
V+
V-
2
5
V+
IN
3
4
GND
IN
3
4
GND
SOT23-6
LOGIC
0
1
SWITCH
ON
OFF
SOT23-6
LOGIC
0
1
SWITCH
OFF
ON
________________________________________________________________
Maxim Integrated Products
1
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
25Ω SPST Analog Switches in SOT23-6
MAX4647/MAX4648
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND)
V+ ...........................................................................-0.3V, +44.0V
V- ............................................................................-44.0V, +0.3V
V+ to V-................................................................-0.3V to +44.0V
All Other Pins (Note 1)...............................V- - 0.3V to V+ + 0.3V
Continuous Current into Any Terminal..............................±60mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle)...............................±100mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........696mW
Operating Temperature Ranges
MAX464_EUT..................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Junction Temperature ......................................................+150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
Signals on NO, NC, COM, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward-diode current to
maximum current rating.
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.
ELECTRICAL CHARACTERISTICS—Dual ±15V Supplies
(V+ = +15V, V- = -15V, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Notes 2, 3)
PARAMETER
ANALOG
SWITCH
Analog Signal Range
On-Resistance
On-Resistance
Flatness (Note 4)
NO or NC Off-Leakage
Current
COM Off-Leakage
Current
COM On-Leakage
Current
LOGIC INPUT
Input Logic High
Input Logic Low
Input Leakage Current
V
IH
V
IL
I
IN
V
IN
= 0 or +5V
V
NO
or V
NC
=
±10V;
R
L
= 300Ω;
C
L
= 35pF; Figure 2
V
NO
or V
NC
=
±10V;
R
L
=300Ω;
C
L
= 35pF; Figure 2
COM = 0; R
S
= 0; C
L
= 1nF;
Figure 3
T
MIN
to T
MAX
T
MIN
to T
MAX
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
4
62
-1
68
2.4
0.8
1
100
125
100
125
V
V
µA
V
NO
,V
NC
,
V
COM
R
ON
R
FLAT(ON)
I
NO(OFF)
or
I
NC(OFF)
I
COM(OFF)
I
COM
= 10mA; V
NO
or V
NC
=
±10V
I
COM
= 10mA; V
NO
or V
NC
= +5V, 0, -5V
V
NO
or V
NC
= +14V, -14V;
V
COM
= -14V, +14V
V
COM
= -14V, +14V;
V
NO
or V
NC
= +14V, -14V
V
COM
= +14V, -14V;
V
NO
or V
NC
= +14V, -14V or
floating
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
-1
-10
-1
-10
-2
-20
0.01
0.01
0.8
V-
18
V+
25
30
2
3
1
10
1
10
2
20
nA
V
Ω
Ω
nA
nA
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ICOM(ON)
DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Charge Injection
t
ON
t
OFF
Q
ns
ns
pC
2
_______________________________________________________________________________________
25Ω SPST Analog Switches in SOT23-6
ELECTRICAL CHARACTERISTICS—Dual ±15V Supplies (continued)
(V+ = +15V, V- = -15V, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.
(Notes 2, 3)
PARAMETER
Off-Isolation
Total Harmonic
Distortion
V
NO
or V
NC
Off-Capacitance
COM Off-Capacitance
COM On-Capacitance
POWER SUPPLY
Power Supply Range
V
IN
= 5V
Positive Supply Current
I+
V
IN
= 0 or V+
Negative Supply
Current
I-
V
IN
= 0 or 5V
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
0.001
0.001
±4.5
45
±20
100
150
1
10
1
10
µA
µA
V
SYMBOL
V
ISO
THD
C
NO(OFF)
,
C
NC(OFF)
C
COM(OFF)
C
COM(ON)
CONDITIONS
C
L
= 5pF; R
L
= 50Ω; f = 1MHz;
V
COM
= 1V
RMS
; Figure 4
R
L
= 600Ω, 5Vp-p,
f = 20Hz to 20kHz
f = 1MHz; Figure 5
f = 1MHz; Figure 5
f = 1MHz; Figure 6
T
A
+25°C
+25°C
+25°C
+25°C
+25°C
MIN
TYP
-92
0.006
6
6
19
MAX
UNITS
dB
%
pF
pF
pF
MAX4647/MAX4648
MAX4647/MAX4648
ELECTRICAL CHARACTERISTICS—Single +12V Supply
(V+ = +12V, V- = 0, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Notes 2, 3)
PARAMETER
ANALOG SWITCH
Analog Signal Range
On-Resistance
On-Resistance
Flatness (Note 4)
DYNAMIC
Turn-On Time
Turn-Off Time
Charge Injection
t
ON
t
OFF
Q
V
NO
or V
NC
= +10V; R
L
= 300Ω;
C
L
= 35pF; Figure 2
V
NO
or V
NC
= +10V; R
L
= 300Ω;
C
L
= 35pF; Figure 2
COM = 0; R
S
= 0; C
L
= 1nF;
Figure 3
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
-5
68
100
175
225
150
200
ns
ns
pC
V
NO
, V
NC
,
V
COM
R
ON
R
FLAT(ON)
I
COM
= 10mA; V
NO
or V
NC
= +10V
I
COM
= 10mA; V
NO
or V
NC
= +2V, +6V, +10V
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
4
0
36
V+
45
60
6
8
V
Ω
Ω
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
________________________________________________________________________________________
3
25Ω SPST Analog Switches in SOT23-6
MAX4647/MAX4648
ELECTRICAL CHARACTERISTICS—Single +12V Supply (continued)
(V+ = +12V, V- = 0, V
IH
= 2.4V, V
IL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Notes 2, 3)
PARAMETER
Power Supply Range
Positive Supply
Current
V
IN
= 5V
I+
V
IN
= 0 or V+
SYMBOL
CONDITIONS
T
A
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
0.001
MIN
+9
20
TYP
MAX
+36
50
75
1
10
µA
UNITS
V
Note 2:
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 3:
SOT packaged parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and
correlation.
Note 4:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal range.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE
vs. V
COM
(DUAL SUPPLIES)
MAX4647/48 toc01
ON-RESISTANCE
vs. V
COM
(SINGLE SUPPLY)
MAX4647/48 toc02
ON-RESISTANCE vs.
V
COM
AND TEMPERATURE (DUAL SUPPLIES)
MAX4647/48 toc03
50
45
40
R
ON
(Ω)
35
30
25
20
15
10
-20
-10
0
V
COM
(V)
10
A: V+ = +8, V- = -8V
B: V+ = +10V, V- = -10V
C: V+ = +12V, V- = -12V
D: V+ = +15V, V- = -15V
E: V+ = +20V, V- = -20V
A
B
C
D
E
50
45
40
R
ON
(Ω)
35
30
25
V+ = +24V
20
15
10
0
10
20
V
COM
(V)
30
V+ = +36V
V+ = +9V
V+ = +12V
30
25
T
A
= +85°C
20
R
ON
(Ω)
T
A
= +25°C
15
T
A
= -40°C
10
5
0
-15
-10
-5
0
V
COM
(V)
5
10
V+ = +15V
V- = -15V
20
15
ON-RESISTANCE vs.
V
COM
AND TEMPERATURE (SINGLE SUPPLY)
MAX4647/48 toc04
ON-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4647/48 toc05
OFF-LEAKAGE CURRENT
vs. TEMPERATURE
V+ = +15V
V- = -15V
V
NC
OR V
NO
=
±10V
V
COM
= 10V
±
MAX4647/48 toc06
55
50
45
R
ON
(Ω)
40
35
30
T
A
= -40°C
25
20
15
0
5
V
COM
(V)
10
T
A
= +25°C
V+ = +12V
V- = O
T
A
= +85°C
10
1
ON-LEAKAGE (nA)
0.1
0.01
DUAL SUPPLIES
V+ = +15V
V- = -15V
V
COM
=
±
10V
1
0.1
OFF-LEAKAGE (nA)
0.01
DUAL SUPPLIES
0.001
SINGLE SUPPLY
0.001
0.0001
0.00001
15
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
SINGLE SUPPLY
0.0001
-40
-20
0
20
40
60
80
TEMEPERATURE (°C)
4
_______________________________________________________________________________________
25Ω SPST Analog Switches in SOT23-6
MAX4647/MAX4648
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
FREQUENCY RESPONSE
MAX4647/48 toc07
TOTAL HARMONIC DISTORTION
vs.FREQUENCY
MAX4647/48 toc08
SUPPLY CURRENT vs. TEMPERATURE
V+ = +15V
V- = -15V
IN = 5V
MAX4647/48 toc09
0
-10
-20
-30
LOSS (dB)
-40
-50
-60
-70
-80
-90
-100
0.1
1
10
FREQUENCY (MHz)
100
OFF-ISOLATION
ON-RESPONSE
100
10
DISTORTION (%)
1
0.1
0.01
0.001
0.0001
SIGNAL DISTORTION
MEASUREMENT LIMITS
V+ = +15V
V- = -15V
5V
RMS
SIGNAL
600Ω SOURCE
AND LOAD
100
10
I+, I-, I
GND
(µA)
I+, I
GND
1
0.1
I-
0.01
0.001
10
100
1k
FREQUENCY (Hz)
10k
100k
-40
-15
10
35
60
85
TEMPERATURE (°C)
1000
SUPPLY CURRENT
vs. LOGIC THRESHOLD
MAX4647/48 toc10
CHARGE INJECTION vs. V
COM
MAX4647/48 toc11
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
4.5
4.0
LOGIC THRESHOLD (V)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
MAX4647/48 toc12
1000
100
10
1
0.1
0.01
V+ = +15V
V- = -15V
V
COM
= +14V
I+ (µA)
40
30
20
CHARGE (pC)
A
10
0
-10
-20
-30
-40
B
A: V+ = +15V, V- = -15V
B: V+ = +12V, V- = 0
5.0
0.001
0.0001
0.00001
0.000001
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
IN (V)
-15
-10
-5
0
V
COM
(V)
5
10
15
0
10
20
V+ (V)
30
Pin Description
MAX4647
1
—
2
3
4
5
6
MAX4648
—
1
2
3
4
5
6
PIN NAME
NC
NO
V-
IN
GND
V+
COM
Normally Closed Switch Terminal
Normally Open Switch Terminal
Negative Supply Voltage Input
Digital Control Input
Ground
Positive Supply Voltage Input
Analog Switch Common
FUNCTION
_______________________________________________________________________________________
5
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