19-1633; Rev 0; 1/00
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
General Description
The MAX4626/MAX4627/MAX4628 are low-on-resis-
tance, low-voltage, single-pole/single-throw (SPST)
analog switches that operate from a +1.8V to +5.5V sin-
gle supply. The MAX4626 is normally open (NO), and
the MAX4627 is normally closed (NC). The MAX4628 is
normally open (NO) and has two control inputs. These
devices also have fast switching speeds (t
ON
= 50ns
max, t
OFF
= 30ns max).
When powered from a +5V supply, the MAX4626/
MAX4627/MAX4628 offer 0.5Ω max on-resistance
(R
ON
) with 0.1Ω max R
ON
flatness, and their digital
logic inputs are TTL compatible. These switches also
feature overcurrent protection to prevent device dam-
age from short circuits and excessive loads.
The MAX4626 is pin compatible with the MAX4514, and
the MAX4627 is pin compatible with the MAX4515. The
MAX4626/MAX4627 are available in SOT23-5 pack-
ages; the MAX4628 is available in a SOT23-6 package.
♦
Low R
ON
0.5Ω max (+5V Supply)
0.9Ω max (+3V Supply)
♦
0.1Ω max R
ON
Flatness (+5V Supply)
♦
Overcurrent Protection
♦
Single-Supply Operation (+1.8V to +5.5V)
♦
Available in SOT23 Packages
♦
Fast Switching: t
ON
= 50ns max, t
OFF
= 30ns max
♦
TTL-Logic Compatible at +5V
♦
Pin Compatible with MAX4514 (MAX4626)
Pin Compatible with MAX4515 (MAX4627)
Features
MAX4626/MAX4627/MAX4628
Applications
Power Routing
Battery-Operated Equipment
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
PART
MAX4626EUK-T
MAX4627EUK-T
MAX4628EUT-T
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
5 SOT23-5
5 SOT23-5
6 SOT23-6
TOP
MARK
ADMJ
ADMK
AADN
Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
MAX4626
COM
1
5
V+
COM
1
MAX4627
5
V+
COM
1
MAX4628
6
V+
NO
2
NC
2
NO
2
5
IN
GND
3
4
IN
GND
3
4
IN
GND
3
4
IN
SOT23-5
MAX4626
LOGIC
0
1
SWITCH
OFF
ON
SOT23-5
MAX4627
LOGIC
0
1
SWITCH
ON
OFF
IN
1
1
0
0
SOT23-6
MAX4628
IN
0
1
0
1
SWITCH
OFF
OFF
OFF
ON
SWITCHES SHOWN FOR LOGIC "0" INPUT.
________________________________________________________________
Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
MAX4626/MAX4627/MAX4628
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V+, IN,
IN..................................................................-0.3V
to +6V
NO, NC, COM (Note 1).................................-0.3V to (V+ + 0.3V)
Continuous Current NO, NC to COM .............................±400mA
Peak Switch Current NO, NC to COM
(pulsed at 1ms, 10% duty cycle max) ........................ ±800mA
Continuous Power Dissipation (T
A
= 70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) ..........571mW
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) ..........571mW
Operating Temperature Range
MAX462_EU_ ....................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
Note 1:
Signals on NC, NO, or COM exceeding V+ or GND are clamped by internal diodes.
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—Single +5V Supply
(V+ = +5V ±10%, GND = 0, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (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
Overcurrent-Protection
Threshold Current
DYNAMIC
Turn-On Time
Turn-Off Time
Charge Injection
Off-Isolation (Note 5)
COM Off-Capacitance
NC or NO Off-
Capacitance
COM On-Capacitance
t
ON
t
OFF
Q
OIRR
C
COM(OFF)
C
OFF
C
COM(ON)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
V
NO
or V
NC
= 3V, Figure 2
T
A
= T
MIN
to T
MAX
C
L
= 1.0nF, V
GEN
= 0, R
GEN
= 0, T
A
= +25°C, Figure 3
R
L
= 50Ω, C
L
= 5pF, f = 1MHz, T
A
= +25°C, Figure 4
f = 1MHz, T
A
= +25°C, Figure 5
V
NO
or V
NC
= 3V, Figure 2
f = 1MHz, T
A
= +25°C, Figure 5
f = 1MHz, T
A
= +25°C, Figure 5
40
18
40
-51
65
65
130
50
60
30
40
ns
ns
pC
dB
pF
pF
pF
SYMBOL
V
COM
, V
NO
,
V
NC
R
ON
R
FLAT(ON)
I
NO(OFF)
,
I
NC(OFF)
I
COM(OFF)
I
COM(ON)
V+ = 4.5V,
V
NO
or V
NC
= 3.5V,
I
COM
= 100mA
V+ = 4.5V; V
COM
= 0, 1V,
2V; I
COM
= 100mA
V+ = 5.5V; V
COM
= 1V, 4.5V;
V
NO
or V
NC
= 4.5V, 1V
V+ = 5.5V; V
COM
= 1V, 4.5V;
V
NO
or V
NC
= 4.5V, 1V
V+ = 5.5V; V
COM
= 1V, 4.5V;
V
NO
or V
NC
= 1V, 4.5V, or
floating
T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
0.05
-2
-20
-2
-20
-4
-40
2.4
0.2
0.2
0.3
CONDITIONS
MIN
TYP
MAX
UNITS
0
0.35
V+
0.5
0.6
0.10
0.10
2
20
2
20
4
V
Ω
Ω
nA
nA
nA
40
A
2
_______________________________________________________________________________________
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
MAX4626/MAX4627/MAX4628
ELECTRICAL CHARACTERISTICS—Single +5V Supply (continued)
(V+ = +5V ±10%, GND = 0, V
INH
= 2.4V, V
INL
= 0.8V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Notes 2, 3)
PARAMETER
LOGIC INPUT
Input Voltage Low
Input Voltage High
Logic Input Current
SUPPLY
Power-Supply Range
Positive Supply Current
V+
I+
V+ = 5.5V, V
IN
= 0 or V+
1.8
5.5
10
V
µA
V
INL
V
INH
I
IN
2.4
-1
1
0.8
V
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.6V, GND = 0, V
INH
= 2.0V, V
INL
= 0.6V, T
A
= T
MIN
to T
MAX
, unless otherwise noted.) (Notes 2, 3)
PARAMETER
SYMBOL
V
COM
, V
NO
,
V
NC
R
ON
V+ = 2.7V,
V
NO
or V
NC
= 1.5V,
I
COM
= 100mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
0.1
CONDITIONS
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
0
0.4
V+
0.8
0.9
V
On-Resistance
On-Resistance Flatness
(Note 4)
Ω
Ω
R
FLAT(ON)
V+ = 2.7V; I
COM
= 100mA;
V
NO
or V
NC
= 0, 0.75V, 1.5V; T
A
= +25°C
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
DYNAMIC
Turn-On Time
Turn-Off Time
Charge Injection
t
ON
t
OFF
Q
V
NO
or V
NC
= 1.5V,
Figure 2
V
NO
or V
NC
= 1.5V,
Figure 2
65
22
80
90
40
50
30
ns
ns
pC
C
L
= 1.0nF, Figure 3, V
GEN
= 0, R
GEN
= 0,
Ta = +25°C
LOGIC INPUT
Input Voltage Low
Input Voltage High
Logic Input Current
V
INL
V
INH
I
IN
I+
V = +3.6V, V
IN
= 0
2.0
-1
1
10
0.6
V
V
µA
µA
SUPPLY
Positive Supply Current
Note 2:
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 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 values of on-resistance as measured over the
specified analog signal range.
Note 5:
Off-Isolation = 20log
10
[V
COM
/ (V
NC
or V
NO
)], V
COM
= output, V
NC
or V
NO
= input to off switch.
_______________________________________________________________________________________
3
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
MAX4626/MAX4627/MAX4628
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. COM VOLTAGE
OVER SUPPLY VOLTAGE
MAX4626/7/801
ON-RESISTANCE vs. COM VOLTAGE
OVER TEMPERATURE
MAX4626/7/8-02
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
MAX4626/7/8-03
3.0
I
COM
= 100mA
2.5
2.0
R
ON
(Ω)
V
CC
= +1.8V
0.6
0.5
0.4
R
ON
(Ω)
V + = 5V
I
COM
= 100mA
T
A
= +105°C
60
50
40
t
ON/
t
OFF
(ns)
V
CC
= +2.0V
1.5
1.0
0.5
0
0
1
2
3
4
5
V
COM
(V)
V
CC
= +2.3V
V
CC
= +2.5V
V
CC
= +3.0V
0.3
0.2
T
A
= +85°C
T
A
= +25°C
T
A
= -55°C
T
A
= -40°C
t
ON
30
20
10
t
OFF
0
V
CC
= +5V
0.1
0
0
1
2
3
4
5
V
COM
(V)
2
3
4
V
SUPPLY
(V)
5
6
TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4626/7/8-04
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4626/7/805
CHARGE INJECTION vs. COM VOLTAGE
MAX4626/7/8-06
100
10
V+ = 5V
V
NO
or V
NC
= 3V
120
100
80
80
t
ON/
t
OFF
(ns)
t
ON
40
0.1
Q (pC)
-40
-20
0
20
40
60
80
100
60
ON/OFF-LEAKAGE (nA)
1
60
40
20
t
OFF
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
0.01
20
0.001
TEMPERATURE (°C)
0
0
1
2
3
4
5
V
COM
(V)
FREQUENCY RESPONSE
0
-10
-20
-30
LOSS (dB)
-40
-50
-60
-70
-80
-90
30k 100k
1M
V+ = 5V
50Ω = IN/OUT
10M
100M
OFF-ISOLATION
ON-PHASE
MAX4626/7/8-07
LOGIC THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
0
LOGIC THRESHOLD VOLTAGE (V)
-10
PHASE (degrees)
-20
-30
-40
-50
-60
-70
-80
0
2
3
4
SUPPLY VOLTAGE (V)
5
6
2.0
VIN RISING
1.5
MAX4626/7/8-08
10
2.5
ON-LOSS
1.0
VIN FALLING
0.5
FREQUENCY (Hz)
4
_______________________________________________________________________________________
0.5Ω, Low-Voltage, Single-Supply
SPST Analog Switches
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
MAX4626/MAX4627/MAX4628
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4626/7/8-09
OVERCURRENT RESPONSE
MAX4626/7/810
0.1
3V
V
COM
2V/div
0
THD (%)
0.01
3A
I
COM
1A/div
0
0.001
10
100
1k
FREQUENCY (Hz)
10k
100k
500µs/div
Pin Description
PIN
MAX4626
MAX4627
MAX4628
NAME
COM
NO
GND
IN
V+
NC
IN
Analog Switch—Common
Analog Switch—Normally Open
Ground
Digital Control Input
Positive Supply Input
Analog Switch—Normally Closed
Inverted Digital Control Input (see MAX4628 Truth Table)
FUNCTION
1
2
3
4
5
—
—
1
—
3
4
5
2
—
1
2
3
5
6
—
4
_______________________________________________________________________________________
5
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