19-1592; Rev 2; 5/01
1Ω, Low-Voltage, Single-Supply
SPDT Analog Switches
General Description
The MAX4624/MAX4625 are low-on-resistance, low-
voltage single-pole/double-throw (SPDT) analog switch-
es that operate from a single +1.8V to +5.5V supply.
The MAX4624 has break-before-make switching; the
MAX4625 has make-before-break switching. These
devices also have fast switching speeds (t
ON
= 50ns
max, t
OFF
= 50ns max).
When powered from a +5V supply, the MAX4624/
MAX4625 offer 1Ω max on-resistance (R
ON
), with 0.12Ω
max R
ON
matching and flatness. The digital logic
inputs are TTL compatible when using a single +5V
supply. These switches also feature overcurrent protec-
tion to prevent damage from short circuits and exces-
sive loads.
The MAX4624/MAX4625 are pin compatible with the
MAX4544 and are available in space-saving standard
6-pin SOT23 packages, as well as the 1.0mm high Thin
SOT package.
o
Low R
ON
1Ω max (+5V Supply)
2Ω max (+3V Supply)
o
0.12Ω max R
ON
Flatness (+5V Supply)
o
Overcurrent Protection
o
+1.8V to +5.5V Single-Supply Operation
o
Available in SOT23 Packages
o
Fast Switching: t
ON
= 50ns max, t
OFF
= 50ns max
o
TTL-Logic Compatible (+5V Supply)
o
Pin Compatible with MAX4544
o
Guaranteed Break-Before-Make (MAX4624)
o
Guaranteed Make-Before-Break (MAX4625)
Features
MAX4624/MAX4625
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
MAX4624EUT-T
MAX4624EZT-T
MAX4625EUT-T
MAX4625EZT-T
Ordering Information
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6*
6 SOT23-6
6 SOT23-6*
TOP
MARK
AADL
AAAE
AADM
AAAF
*Thin
SOT (1.0mm height) package. Recommended for new
designs.
Pin Configuration/
Functional Diagram/Truth Table
TOP VIEW
MAX4624/MAX4625
IN 1
V+ 2
GND 3
6
5
4
NO
COM
NC
LOGIC
0
1
NC
ON
OFF
NO
OFF
ON
SOT23-6
SWITCHES SHOWN
FOR LOGIC “0” INPUT
________________________________________________________________
Maxim Integrated Products
1
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.
1Ω, Low-Voltage, Single-Supply
SPDT Analog Switches
MAX4624/MAX4625
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V+, IN ....................................................................-0.3V to +6V
COM, NC, NO (Note 1)..............................-0.3V to (V+ + 0.3V)
Continuous Current NO, NC to COM..............................±200mA
Peak Current NO, NC to COM
(pulsed at 1ms, 10% duty cycle max) ........................ ±400mA
Continuous Power Dissipation
6-Pin SOT23 (derate 7.1mW/°C above +70°C).............571mW
6-Pin Thin SOT23 (derate 6.25mW/°C above +70°C) ...500mW
Operating Temperature Range
MAX462_E_T ....................................................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Note 1:
Signals on NC, NO, and 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 Match Between
Channels (Note 4)
On-Resistance Flatness
(Note 5)
NO or NC Off-Leakage
Current
COM On-Leakage
Current
Overcurrent-Protection
Current Threshold
DYNAMIC
Turn-On Time
Turn-Off Time
Break-Before-Make Delay
(Note 6)
Make-Before-Break Delay
(Note 6)
t
ON
t
OFF
t
BBM
t
MBB
V
NO
or V
NC
= 3V, Figure 2
V
NO
or V
NC
= 3V, Figure 2
MAX4624 only, Figure 3a
MAX4625 only, Figure 3b
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
1
1
1
1
6
20
40
40
50
60
50
60
ns
ns
ns
ns
V
COM
, V
NO
,
V
NC
R
ON
∆R
ON
R
FLAT(ON)
I
NO(OFF)
,
I
NC(OFF)
I
COM(ON)
V+ = 4.5V, V
NO
or
V
NC
= 3.5V, I
COM
= 100mA
V+ = 4.5V, I
COM
= 100mA,
V
NO
or V
NC
= 3.5V
V+ = 4.5V; I
COM
= 100mA;
V
NO
or V
NC
= 0, 1V, 2V
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
-2
-20
-4
-40
1.2
0.3
0.01
0.08
0.06
0
0.65
V+
1
1.2
0.12
0.15
0.12
0.15
2
20
4
nA
40
A
V
Ω
Ω
Ω
nA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V+ = 5.5V; V
COM
= 1V, 4.5V; T
A
= +25°C
V
NO
or V
NC
= 4.5V, 1V
T
A
= T
MIN
to T
MAX
V+ = 5.5V; V
COM
= 1V, 4.5V; T
A
= +25°C
V
NO
or V
NC
= 1V, 4.5V, or
T
A
= T
MIN
to T
MAX
floating
T
A
= +25°C
2
_______________________________________________________________________________________
1Ω, Low-Voltage, Single-Supply
SPDT Analog Switches
MAX4624/MAX4625
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
Charge Injection
Off-Isolation (Note 7)
Crosstalk (Note 8)
NC or NO Off-Capacitance
COM On-Capacitance
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
C
OFF
C
COM(ON)
SYMBOL
Q
OIRR
CONDITIONS
C
L
= 1.0nF, V
GEN
= 0, R
GEN
= 0, T
A
= +25°C,
Figure 4
R
L
= 50Ω, C
L
= 5pF, f = 1MHz, T
A
= +25°C,
Figure 5
R
L
= 50Ω, C
L
= 5pF, f = 1MHz, T
A
= +25°C,
Figure 5
f = 1MHz, T
A
= +25°C, Figure 6
f = 1MHz, T
A
= +25°C, Figure 6
MIN
TYP
65
-57
-57
32
100
MAX
UNITS
pC
dB
dB
pF
pF
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
ANALOG SWITCH
Analog Signal Range
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
0.25
0
1.2
V+
2.0
2.5
V
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
On-Resistance
On-Resistance Flatness
(Note 6)
DYNAMIC
Turn-On Time
Turn-Off Time
Break-Before-Make Time
Delay (Note 4)
Make-Before-Break Time
Delay (Note 4)
Charge Injection
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
V
NO
or V
NC
= 1.5V,
Figure 2
V
NO
or V
NC
= 1.5V,
Figure 2
MAX4624 only, Figure 3a
MAX4625 only, Figure 3b
C
L
= 1.0nF, Figure 4, V
GEN
= 0,
R
GEN
= 0, 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
1
1
t
ON
t
OFF
t
BBM
t
MBB
Q
65
62
80
100
80
100
ns
ns
ns
ns
pC
40
8
40
_______________________________________________________________________________________
3
1Ω, Low-Voltage, Single-Supply
SPDT Analog Switches
MAX4624/MAX4625
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(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
LOGIC INPUT
Input Voltage Low
Input Voltage High
Logic Input Current
SUPPLY
Positive Supply Current
I+
V+ = 3.6V, V
IN
= 0 or V+
10
µA
V
INL
V
INH
I
IN
2.0
-1
1
0.6
V
V
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
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:
SOT-packaged parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and
correlation.
Note 4:
∆R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Note 5:
Flatness is defined as the difference between the maximum and minimum values of on-resistance as measured over the
specified analog signal range.
Note 6:
Guaranteed by design.
Note 7:
Off-Isolation = 20log
10
[V
COM
/ (V
NC
or V
NO
)], V
COM
= output, V
NC
or V
NO
= input to off switch.
Note 8:
Between the two switches.
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
ON-RESISTANCE vs. COM VOLTAGE
OVER SUPPLY VOLTAGE
MAX4624 toc01
ON-RESISTANCE vs. COM VOLTAGE
OVER TEMPERATURE
MAX4624 toc02
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
MAX4624 toc03
6
5
4
R
ON
(Ω)
3
2
1
0
0
1
2
3
+2.3V
+2.5V
+3.0V
+1.8V
V
COM
= 100mA
1.00
T = +105°C
T
A
= +85°C
A
T
A
= +25°C
120
100
80
60
40
t
OFF
20
0
0.75
R
ON
(Ω)
+2.0V
t
ON
/t
OFF
(ns)
0.50
T
A
= -40°C
T
A
= -55°C
0.25
t
ON
+5V
0
4
5
0
V+ = 5V
I
COM
= 100mA
1
2
V
COM
(V)
3
4
5
2
3
4
V
SUPPLY
(V)
5
6
V
COM
(V)
4
_______________________________________________________________________________________
1Ω, Low-Voltage, Single-Supply
SPDT Analog Switches
_____________________________Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4624TOC5
MAX4624TOC4
MAX4624/MAX4625
TURN-ON/OFF TIMES vs. TEMPERATURE
50
V+ = 5V
V
NO
or V
NC
= 3V
10
CHARGE INJECTION vs. COM VOLTAGE
MAX4624 toc06
100
50
0
40
t
ON
/t
OFF
(ns)
ON/OFF-LEAKAGE (nA)
1
MAX4625
0.1
Q (pC)
30
t
ON
MAX4624
-50
-100
20
0.01
10
t
OFF
0.001
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
TEMPERATURE (°C)
-150
-200
0
1
2
3
4
5
V
COM
(V)
0
FREQUENCY RESPONSE
0
-10
-20
-30
LOSS (dB)
-40
-50
-60
-70
-80
-90
30k 100k
1M
FREQUENCY (Hz)
V+ = 5V
50Ω = IN/OUT
10M
OFF-ISOLATION
ON-PHASE
ON-LOSS
MAX4624 toc07
LOGIC THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
-0
LOGIC THRESHOLD VOLTAGE (V)
-10
PHASE (degrees)
-20
-30
-40
-50
-60
-70
0
2
3
4
SUPPLY VOLTAGE (V)
5
6
2.0
VIN RISING
1.5
VIN FALLING
MAX4624 toc08
10
2.5
1.0
0.5
-80
100M
TOTAL HARMONIC DISTORTION
vs. FREQUENCY
MAX4624 toc09
OVERCURRENT RESPONSE
3.3V
0
MAX4624 toc10
0.1
V
COM
2V/div
THD (%)
0.01
1.5A
0
0.001
10
100
1k
FRQUENCY (Hz)
10k
100k
1ms/div
I
COM
1A/div
_______________________________________________________________________________________
5
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