MAXIM MAX4644 Technical data
19-1657; Rev 1; 1/11
High-Speed, Low-Voltage, 4Ω,
SPDT CMOS Analog Switch
General Description
The MAX4644 is a single-pole/double-throw (SPDT)
switch that operates from a single supply ranging from
+1.8V to +5.5V. It provides low 4Ω on-resistance (RON)
as well as 1Ω R
flatness over the entire analog-signal
ON
range. The MAX4644 offers fast switching times of less
than 20ns while ensuring break-before-make operation.
It typically consumes only 0.01μW of quiescent power,
making it suitable for use in low-power, portable applications.
The MAX4644’s features include low leakage currents
over the entire temperature range, TTL/CMOS-compatible digital logic, and excellent AC characteristics. It is
packaged in either a small 8-pin μMAX
®
or a tiny 6-pin
SOT23.
Applications
Battery-Operated Equipment
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Sample-and-Hold Circuits
Communications Circuits
ËMAX is a registered trademark of Maxim Integrated
Products, Inc.
Features
♦ +1.8V to +5.5V Single-Supply Operation
♦ Rail-to-Rail Analog-Signal Range
♦ Guaranteed R
ON
4Ω max (+5V Supply)
8Ω max (+3V Supply)
♦ +1.8V Operation
RON30Ω (typ) Over Temperature
t
18ns (typ), t
ON
OFF
12ns typ
♦ Guaranteed RONFlatness: 0.75Ω (typ) (+5V Supply)
♦ Guaranteed RONMatch Between Channels:
0.1Ω typ (+5V Supply)
♦ Low Leakage (< 0.35nA) Over Entire Temperature
Range
♦ Excellent AC Characteristics
Low Crosstalk: -82dB at 1MHz
High Off-Isolation: -80dB at 1MHz
0.018% Total Harmonic Distortion
♦ Low Power Consumption: < 0.01µW
Ordering Information
PART TEMP. RANGE
MAX4644EUT+T -40°C to +85°C 6 SOT23 AAHQ
MAX4644EUA+T -40°C to +85°C 8 μMAX —
+
Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
PINPACKAGE
TOP
MARK
MAX4644
Pin Configurations/Functional Diagrams/Truth Table
TOP VIEW
MAX4644
1
IN
2
V+
3
GND
SOT23-6
________________________________________________________________
6
NO
COM
5
4
NC
IN
0
1
MAX4644
NC NO
ON
OFF
COM
NC
GND
V+
OFF
ON
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX4644
1
2
3
4
μMAX
8
NO
N.C.
7
6
IN
N.C.
5
Maxim Integrated Products
1
High-Speed, Low-Voltage, 4Ω,
SPDT CMOS Analog Switch
ABSOLUTE MAXIMUM RATINGS
(All voltages 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
Continuous Current (NO, NC, and COM) .........................±50mA
Peak Current (NO, NC, and COM, pulsed at 1ms,
10% duty cycle)......................................................... ±100mA
Continuous Power Dissipation (T
6-Pin SOT23 (derate 8.70mW/°C above +70°C)........ 696mW
8-Pin μMAX (derate 4.5mW/°C above +70°C) ........... 362mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................ +300°C
Soldering Temperature (reflow) ...................................... +260°C
= +70°C)
A
MAX4644
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.
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+ = +4.5V to +5.5V, V
ANALOG SWITCH
Analog-Signal Range
INH
= 2.4V, V
= 0.8V, TA= T
INL
V
,
COM
V
,
NO
V
NC
MIN
to T
, unless otherwise noted. Typical values are at TA= +25°C.)
MAX
CONDITIONS
UNITSMIN TYP MAXSYMBOLPARAMETER
V0V+
On-Resistance
On-Resistance Match
Between Channels (Note 2)
On-Resistance Flatness
(Note 3)
NO, NC Off-Leakage
Current (Note 4)
COM Off-Leakage Current
(Note 4)
COM On-Leakage Current
(Notes 4, 5)
DIGITAL INPUTS
DIGITAL INPUTS
Input-Logic High
Input-Logic Low
Input Current
R
ON
ΔR
ON
R
FLAT
I
NO(OFF)
I
NC(OFF)
I
COM(OFF)
I
COM(ON)
IH
IL
IN
V+ = 4.5V, I
10mA, VNOor
V
= 0 to V+
NC
V+ = 4.5V, I
10mA, VNOor
V
= 0 to V+
NC
V+ = 4.5V, I
10mA, V
V
= 0 to V+
NC
V+ = 5.5V, V
,
1V or 4.5V, V
= 4.5V or 1V
V
NC
V+ = 5.5V, V
1V or 4.5V, V
V
= 4.5V or 1V
NC
V+ = 5.5V, V
1V or 4.5V
VIN= 0.8V or 2.4V
NO
COM
COM
COM
or
COM
NO
COM
NO
COM
=
TA= +25°C
2.5 4
Ω
4.75
=
TA= T
MIN
TA= +25°C
to T
MAX
0.1
Ω
0.4
=
TA= T
MIN
TA= +25°C
to T
MAX
0.75 1
Ω
1.2
nA
nA
nA
=
TA= T
TA= +25°C
MIN
to T
MAX
-0.25 0.01 0.25
or
-0.35 0.35TA= T
-0.25 0.01 0.25
=
MIN
TA= +25°C
to T
MAX
or
-0.35 0.35TA= T
-0.25 0.01 0.25
-0.35 0.35
=
MIN
TA= +25°C
TA= T
MIN
to T
to T
MAX
MAX
V2.4V
V0.8V
μA-0.1 0.005 0.1I
2 _______________________________________________________________________________________
High-Speed, Low-Voltage, 4Ω,
SPDT CMOS Analog Switch
ELECTRICAL CHARACTERISTICS —Single +5V Supply (continued)
(V+ = +4.5V to +5.5V, V
DYNAMIC
Turn-On Time (Note 4)
Turn-Off Time (Note 4)
Break-Before-Make (Note 4)
NO, NC Off-Capacitance
Switch On-Capacitance
Off-Isolation (Note 6)
Crosstalk (Note 7)
SUPPLY
INH
= 2.4V, V
C
= 0.8V, TA= T
INL
t
ON
t
OFF
t
BBM
NO(OFF),
C
NC(OFF)
(ON)
V
ISO
V
CT
to T
MIN
, unless otherwise noted. Typical values are at TA= +25°C.)
MAX
CONDITIONS
RL= 300Ω; CL=
TA= +25°C
35pF; VNO, VNC= 3V;
Figure 2
RL= 300Ω; CL=
35pF; V
, VNC= 3V;
NO
Figure 2
RL= 300Ω;
TA= T
TA= +25°C
TA= T
TA= +25°C
MIN
MIN
to T
to T
CL= 35pF; VNOor
V
= +3V; Figure 2
NC
V
= 0V, R
GEN
TA= T
= 0V, CL= 1nF, Figure 4
GEN
MIN
to T
NO or NC = GND, f = 1MHz, Figure 5
f = 1MHz, Figure 5
CL= 5pF, RL= 50Ω,
Figure 3
CL= 5pF, RL= 50Ω,
Figure 3
f = 10MHz
f = 1MHz
f = 10MHz
f = 1MHz
RL= 600Ω, 0.5Vp-p, f = 20Hz to 20kHz
V+ = 5.5V, VIN= 0V or V+ μA0.001 1.0I+Positive Supply Current
MAX
MAX
MAX
1
11 15
18
35
6
8
-55
-80
-62
-82
MAX4644
UNITSMIN TYP MAXSYMBOLPARAMETER
ns
ns
ns
pC5QCharge Injection
pF12
pF34C
dB
dB
%0.018THDTotal Harmonic Distortion
ELECTRICAL CHARACTERISTICS—Single +3V Supply
(V+ = +2.7V to +3.3V, V
ANALOG SWITCH
Analog-Signal Range
On-Resistance
On-Resistance Match
Between Channels (Note 2)
On-Resistance Flatness
(Note 3)
INH
= 2.0V, V
= 0.4V, TA= T
INL
MIN
to T
, unless otherwise noted. Typical values are at TA= +25°C.)
MAX
CONDITIONS
V
,
COM
V
,
NO
V
NC
ΔR
R
R
FLAT
ON
ON
V+ = 2.7V, I
10mA, V
V
= 0 to V+
NC
NO
V+ = 2.7V, I
10mA, V
V
= 0 to V+
NC
NO
V+ = 2.7V, I
10mA, V
V
= 0 to V+
NC
NO
COM
or
COM
or
COM
or
=
=
=
TA= +25°C
TA= T
MIN
TA= +25°C
TA= T
MIN
TA= +25°C
TA= T
MIN
_______________________________________________________________________________________ 3
to T
to T
to T
MAX
MAX
MAX
UNITSMIN TYP MAXSYMBOLPARAMETER
V0V+
68
Ω
9
0.1
Ω
0.4
1.5 3
Ω
3.5
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