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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 1
max on-resistance (R
ON
), with 0.12
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 6-pin
SOT23 packages.
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
Features
o Low R
ON
1
max (+5V Supply)
2
max (+3V Supply)
o 0.12 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)
MAX4624/MAX4625
1
, Low-Voltage, Single-Supply
SPDT Analog Switches
________________________________________________________________ Maxim Integrated Products
1
TOP VIEW
6
5
4
1
2
3
NO
COM
NC
GND
V+
IN
MAX4624/MAX4625
SOT23-6
LOGIC
NC
0
1
ON
OFF
NO
OFF
ON
SWITCHES SHOWN
FOR LOGIC "0" INPUT
19-1592; Rev 1; 1/00
PART
MAX4624EUT-T
MAX4625EUT-T
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
Pin Configuration/
Functional Diagram/Truth Table
Ordering Information
TOP
MARK
AADL
AADM
MAX4624/MAX4625
1
, Low-Voltage, Single-Supply
SPDT Analog Switches
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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)
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.
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 SOT23-6 (derate 7.1mW/°C above +70°C) .........571mW
Operating Temperature Range
MAX462_EUT....................................................-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, and COM exceeding V+ or GND are clamped by internal diodes.
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
Analog Signal Range
V
COM
, V
NO
,
V
NC
0
V+
V
0.65
1
On-Resistance
R
ON
V+ = 4.5V, V
NO
or
V
NC
= 3.5V, I
COM
= 100mA
T
A
= +25°C
1.2
0.06
0.12
On-Resistance Match Between
Channels (Note 4)
R
ON
V+ = 4.5V, I
COM
= 100mA,
V
NO
or V
NC
= 3.5V
T
A
= +25°C
0.15
0.08
0.12
On-Resistance Flatness
(Note 5)
R
FLAT(ON)
V+ = 4.5V; I
COM
= 100mA;
V
NO
or V
NC
= 0, 1V, 2V
T
A
= +25°C
0.15
-2
0.01
2
NO or NC Off-Leakage
Current
I
NO(OFF)
,
I
NC(OFF)
V+ = 5.5V; V
COM
= 1V, 4.5V;
V
NO
or V
NC
= 4.5V, 1V
T
A
= +25°C
-20
20
nA
COM On-Leakage
Current
V+ = 5.5V; V
COM
= 1V, 4.5V;
V
NO
or V
NC
= 1V, 4.5V, or
floating
-4
0.3
4
I
COM(ON)
T
A
= +25°C
-40
40
nA
Overcurrent-Protection
Current Threshold
1.2
A
T
A
= +25°C
40
50
Turn-On Time
t
ON
V
NO
or V
NC
= 3V, Figure 2
T
A
= T
MIN
to T
MAX
60
ns
T
A
= +25°C
40
50
Turn-Off Time
t
OFF
V
NO
or V
NC
= 3V, Figure 2
T
A
= T
MIN
to T
MAX
60
ns
Break-Before-Make Delay
(Note 6)
t
BBM
MAX4624 only, Figure 3a
1
20
ns
1
6
Make-Before-Break Delay
(Note 6)
t
MBB
MAX4625 only, Figure 3b
1
ns
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
T
A
= T
MIN
to T
MAX
CONDITIONS
1
DYNAMIC
ANALOG SWITCH
T
A
= T
MIN
to T
MAX
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
MAX4624/MAX4625
1
, Low-Voltage, Single-Supply
SPDT Analog Switches
_______________________________________________________________________________________
3
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
CONDITIONS
pC
Off-Isolation (Note 7)
OIRR
R
L
= 50
, C
L
= 5pF, f = 1MHz, T
A
= +25°C,
Figure 5
-57
dB
Crosstalk (Note 8)
R
L
= 50
, C
L
= 5pF, f = 1MHz, T
A
= +25°C,
Figure 5
-57
dB
NC or NO Off-Capacitance
C
OFF
f = 1MHz, T
A
= +25°C, Figure 6
32
pF
COM On-Capacitance
C
COM(ON)
f = 1MHz, T
A
= +25°C, Figure 6
100
pF
Input Voltage Low
V
INL
0.8
V
Input Voltage High
V
INH
2.4
V
Logic Input Current
I
IN
-1
1
µA
Power-Supply Range
V+
1.8
5.5
V
Positive Supply Current
I+
V+ = 5.5V, V
IN
= 0 or V+
10
µA
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)
V
0
V+
V
COM
, V
NO
,
V
NC
Analog Signal Range
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
ns
65
80
100
V
NO
or V
NC
= 1.5V,
Figure 2
t
ON
Turn-On Time
ns
62
80
100
V
NO
or V
NC
= 1.5V,
Figure 2
t
OFF
Turn-Off Time
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
ns
1
40
t
BBM
Break-Before-Make Time
Delay (Note 4)
ns
1
8
t
MBB
Make-Before-Break Time
Delay (Note 4)
pC
40
Q
Charge Injection
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)
Charge Injection
C
L
= 1.0nF, V
GEN
= 0, R
GEN
= 0, T
A
= +25°C,
Figure 4
Q
65
2.5
1.2
2.0
V+ = 2.7V,
V
NO
or V
NC
= 1.5V,
I
COM
= 100mA
R
ON
On-Resistance
T
A
= +25°C
T
A
= T
MIN
to T
MAX
MAX4624 only, Figure 3a
MAX4625 only, Figure 3b
C
L
= 1.0nF, Figure 4, V
GEN
= 0,
R
GEN
= 0, T
A
= +25°C
SUPPLY
LOGIC INPUT
0.25
V+ = 2.7V; I
COM
= 100mA; V
NO
or V
NC
= 0,
0.75V, 1.5V; T
A
= +25°C
R
FLAT(ON)
On-Resistance Flatness
(Note 6)
ANALOG SWITCH
DYNAMIC
MAX4624/MAX4625
1
, Low-Voltage, Single-Supply
SPDT Analog Switches
4
_______________________________________________________________________________________
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)
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.
V
2.0
V
INH
Input Voltage High
V
0.6
V
INL
Input Voltage Low
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
µA
10
V+ = 3.6V, V
IN
= 0 or V+
I+
Positive Supply Current
µA
-1
1
I
IN
Logic Input Current
LOGIC INPUT
SUPPLY
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
0
1
2
3
4
5
6
0
1
2
3
4
5
ON-RESISTANCE vs. COM VOLTAGE
OVER SUPPLY VOLTAGE
MAX4624 toc01
V
COM
(V)
R
ON
(
)
V
COM
= 100mA
+2.0V
+2.3V
+2.5V
+3.0V
+5V
+1.8V
1.00
0.75
0.50
0.25
0
0
2
1
3
4
5
ON-RESISTANCE vs. COM VOLTAGE
OVER TEMPERATURE
MAX4624 toc02
V
COM
(V)
R
ON
(
)
T
A
= +85°C
T
A
= +105°C
T
A
= +25°C
T
A
= -40°C
T
A
= -55°C
V+ = 5V
I
COM
= 100mA
0
40
t
ON
t
OFF
20
80
60
100
120
2
4
3
5
6
TURN-ON/OFF TIMES
vs. SUPPLY VOLTAGE
MAX4624 toc03
V
SUPPLY
(V)
t
ON
/t
OFF
(ns)
MAX4624/MAX4625
1
, Low-Voltage, Single-Supply
SPDT Analog Switches
_______________________________________________________________________________________
5
0
10
30
20
40
50
-40
0
-20
20
40
60
80
TURN-ON/OFF TIMES vs. TEMPERATURE
MAX4624TOC4
TEMPERATURE (
°C)
t
ON
/t
OFF
(ns)
t
ON
V+ = 5V
V
NO
or V
NC
= 3V
t
OFF
0.01
0.001
0.1
1
10
-40
0
-20
20
40
60
80
100
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4624TOC5
TEMPERATURE (°C)
ON/OFF-LEAKAGE (nA)
-200
-100
-150
0
-50
50
100
0
2
1
3
4
5
CHARGE INJECTION vs. COM VOLTAGE
MAX4624 toc06
V
COM
(V)
Q (pC)
MAX4625
MAX4624
0
-90
30k 100k
1M
10M
100M
FREQUENCY RESPONSE
-80
MAX4624 toc07
FREQUENCY (Hz)
LOSS (dB)
PHASE (degrees)
-30
-40
-50
-60
-70
-20
-10
10
-80
-70
-20
-30
-40
-50
-60
-10
-0
V+ = 5V
50
= IN/OUT
OFF-ISOLATION
ON-LOSS
ON-PHASE
0
0.5
1.5
1.0
2.0
2.5
LOGIC THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
MAX4624 toc08
SUPPLY VOLTAGE (V)
LOGIC THRESHOLD VOLTAGE (V)
2
4
3
5
6
VIN RISING
VIN FALLING
0.1
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