19-2522; Rev 3; 2/05
High-Speed, Low-Voltage, 0.7Ω CMOS Analog
Switches/Multiplexers
General Description
The MAX4781/MAX4782/MAX4783 are high-speed,
low-voltage, low on-resistance, CMOS analog multiplex-
ers/switches configured as an 8-channel multiplexer
(MAX4781), two 4-channel multiplexers (MAX4782),
and three single-pole/double-throw (SPDT) switches
(MAX4783).
These devices operate with a +1.6V to +3.6V single
supply. When powered from a +3V supply, MAX4781/
MAX4782/MAX4783 feature a 0.7Ω on-resistance
(R
ON
), with 0.3Ω R
ON
matching between channels, and
0.1Ω R
ON
flatness. These devices handle rail-to-rail
analog signals while consuming less than 3µW of qui-
escent power. They are available in space-saving 16-
pin thin QFN (3mm x 3mm) and TSSOP packages.
Features
♦
On-Resistance
0.7Ω (+3V Supply)
1.6Ω (+1.8V Supply)
♦
On-Resistance Match Between Channels
0.3Ω (+3V Supply)
♦
On-Resistance Flatness
0.1Ω (+3V Supply)
♦
Single-Supply Operation Down to 1.6V
♦
High-Current Handling Capacity (150mA
Continuous)
♦
+1.8V CMOS-Logic Compatible
♦
Fast Switching Times: t
ON
= 11ns, t
OFF
= 4ns
♦
Pin Compatible with Industry-Standard
74HC4051/74HC4052/74HC4053 and
MAX4617/MAX4618/MAX4619
♦
Available in 3mm x 3mm 16-Pin Thin QFN Packages
MAX4781/MAX4782/MAX4783
Applications
Battery-Operated Equipment
Audio Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PART
MAX4781EUE
MAX4781ETE
MAX4782EUE
MAX4782ETE
MAX4783EUE
MAX4783ETE
Ordering Information
TEMP RANGE
PIN-PACKAGE
-40°C to +85°C 16 TSSOP
-40°C to +85°C 16 Thin QFN (3mm x 3mm)
-40°C to +85°C 16 TSSOP
-40°C to +85°C 16 Thin QFN (3mm x 3mm)
-40°C to +85°C 16 TSSOP
-40°C to +85°C 16 Thin QFN (3mm x 3mm)
Pin Configurations/Functional Diagrams
TOP VIEW
X6
16
MAX4781
X4
15
V
CC
14
X2
X4
13
X6
X
1
12
X1
X
X7
2
11
X0
X7
X5
X5
3
10
X3
ENABLE
6
7
8
LOGIC
11
10
9
A
B
C
3
14
X1
X0
X3
2
15
X2
1
16
V
CC
4
5
13
12
ENABLE
4
LOGIC
9
A
N.C.
5
N.C.
6
GND
7
C
8
B
GND
MAX4781
TSSOP
3mm x 3mm THIN QFN
Pin Configurations/Functional Diagrams continued at end of data sheet.
________________________________________________________________
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.
High-Speed, Low-Voltage, 0.7Ω CMOS Analog
Switches/Multiplexers
MAX4781/MAX4782/MAX4783
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V
CC
, A, B, C, and
ENABLE
...............................-0.3V to +4.6V
Voltage at Any Other Terminal
(Note 1)...................................................-0.3V to (V
CC
+ 0.3V)
Continuous Current into A, B, C,
ENABLE........................±10mA
Continuous Current into X, Y, Z, X_, Y_, Z_ ....................±150mA
Peak Current into X, Y, Z, X_, Y_, Z_
(pulsed at 1ms, 10% duty cycle)................................±300mA
Continuous Power Dissipation
16-Pin Thin QFN (derate 16.9mW/°C above +70°C) ...1349mW
16-Pin TSSOP (derate 5.7mW/°C above +70°C) ........ 457mW
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
Note 1:
Signals on X, Y, Z, X_, Y_, and Z_ exceeding V
CC
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 +3V Supply
(V
CC
= +2.7V to +3.6V, GND = 0, V
IH
= 1.4V, V
IL
= 0.5V, 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
V
X
, V
Y
, V
Z
,
V
X
_, V
Y
_, V
Z
_
R
ON
V
CC
= +2.7V; I
X_
, I
Y_
, I
Z_
=
100mA; V
X
, V
Y
, V
Z
= 1.7V
V
CC
= +2.7V; I
X_
, I
Y_
, I
Z_
=
100mA; V
X
, V
Y
, V
Z
= 1.7V
V
CC
= +2.7V; I
X_
, I
Y_
, I
Z_
=
100mA; V
X
, V
Y
, V
Z
= 0, 0.7V,
1.7V
V
CC
= +3.6V;
V
X_
, V
Y_
, V
Z_
= 3.3V, 0.3V; V
X
,
V
Y
, V
Z
= 0.3V, 3.3V
V
CC
= +3.6V;
V
X_
= 3.3V, 0.3V;
V
X_
= 0.3V, 3.3V
V
CC
= +3.6V
V
X_
= 0.3V, 3.3V;
V
X_
= 0.3V, 3.3V or floating
V
CC
= +3.6V;
V
X_
, V
Y_
, V
Z_
= 3.3V, 0.3V; V
X
,
V
Y
, V
Z
= 0.3V, 3.3V
V
CC
= +3.6V;
V
X
, V
Y
, V
Z
= 0.3V, 3.3V; V
X
, V
Y
,
V
Z
= 0.3V, 3.3V 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
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
+25°C
T
MIN
to T
MAX
-2
-7
-2
-50
-2
-50
-2
-25
-2
-25
0.002
0.002
0.002
0.002
0.002
0.1
0.3
0
0.7
V
CC
1
1.2
0.4
Ω
0.6
0.2
Ω
0.2
+2
nA
+7
+2
nA
+50
+2
nA
+50
+2
nA
+25
+2
nA
+25
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
On-Resistance (Note 4)
On-Resistance Match
Between Channels
(Notes 4, 5)
On-Resistance Flatness
(Note 6)
X_, Y_, Z_
Off-Leakage Current
X Off-Leakage Current
(MAX4781 Only)
Ω
∆R
ON
R
FLAT(ON)
I
X_(OFF)
I
Y_(OFF)
I
Z_(OFF)
I
X(OFF)
X On-Leakage Current
(MAX4781 Only)
I
X(ON)
X, Y, Z Off-Leakage Current
(MAX4782/MAX4783 Only)
I
X(OFF)
I
Y(OFF)
I
Z(OFF)
I
X(ON)
I
Y(ON)
I
Z(ON)
X, Y, Z On-Leakage Current
(MAX4782/MAX4783 Only)
2
_______________________________________________________________________________________
High-Speed, Low-Voltage, 0.7Ω CMOS Analog
Switches/Multiplexers
ELECTRICAL CHARACTERISTICS—Single +3V Supply (continued)
(V
CC
= +2.7V to +3.6V, GND = 0, V
IH
= 1.4V, V
IL
= 0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
=
+25°C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
V
X_
, V
Y_
, V
Z_
= 1.5V; R
L
= 50Ω;
C
L
= 35pF; Figure 1
V
X_
, V
Y_
, V
Z_
= 1.5V; R
L
= 50Ω;
C
L
= 35pF; Figure 1
V
X_
, V
Y_
, V
Z_
= 1.5V; R
L
= 50Ω;
C
L
= 35pF; Figure 2
V
X_
, V
Y_
, V
Z_
= 1.5V; R
L
= 50Ω;
C
L
= 35pF; Figure 3
V
GEN
= 0, R
GEN
= 0, C
L
= 1nF,
Figure 4
f = 1MHz,
Figure 6
MAX4781
f = 1MHz,
Figure 6
MAX4782
MAX4783
MAX4781
f = 1MHz,
Figure 6
R
L
= 50Ω, C
L
=
35pF, Figure 5
R
L
= 50Ω, C
L
=
35pF, Figure 5
MAX4782
MAX4783
f = 10MHz
f = 1MHz
f = 10MHz
f = 1MHz
+25°C
+25°C
T
A
+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
2
-110
18
11
4
MIN
TYP
11
MAX
25
27
15
20
25
27
UNITS
MAX4781/MAX4782/MAX4783
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Address Transition Time
Break-Before-Make Time
(Note 7)
Charge Injection
t
ON
t
OFF
t
TRANS
t
BBM
Q
C
X_(OFF),
C
Y_(OFF),
C
Z_(OFF)
C
X(OFF),
C
Y(OFF),
C
Z(OFF)
C
X(ON)
C
Y(ON)
C
Z(ON)
V
ISO
V
CT
THD
V
IH
V
IL
I
IN
_
V
A
, V
B
, V
C
= V
EN A B L E
= 0 or
3.6V
ns
ns
ns
ns
pC
Input Off-Capacitance
+25°C
38
310
158
75
380
224
140
-75
-90
-65
-80
0.045
1.4
0.5
-1
0.0005
+1
pF
Output Off-Capacitance
pF
Output On-Capacitance
pF
Off-Isolation (Note 8)
Channel-to-Channel Crosstalk
(Note 9)
Total Harmonic Distortion
DIGITAL I/O
Input Logic High
Input Logic Low
Input Leakage Current
POWER SUPPLY
Power-Supply Range
Positive Supply Current
dB
dB
%
V
V
µA
f = 20Hz to 20kHz, 0.5V
P-P
, R
L
= 32Ω
T
MIN
to T
MAX
T
MIN
to T
MAX
T
MIN
to T
MAX
V
CC
I
CC
V
CC
= 3.6V; V
A
, V
B
, V
C
;
V
EN A B L E
= 3.6V or 0
+1.6
+3.6
1
V
µA
_______________________________________________________________________________________
3
High-Speed, Low-Voltage, 0.7Ω CMOS Analog
Switches/Multiplexers
MAX4781/MAX4782/MAX4783
ELECTRICAL CHARACTERISTICS—Single +1.8V Supply
(V
CC
= +1.8V, GND = 0, V
IH
= 1V, V
IL
= 0.4V, 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
V
X
_, V
Y
_ ,
V
Z
_, V
X
,
V
Y
, V
Z
R
ON
∆R
ON
V
CC
= 1.8V; I
X_
, I
Y_
, I
Z_
= 10mA; +25°C
V
X
, V
Y
, V
Z
= 1.0V
T
MIN
to T
MAX
V
CC
= 1.8V; I
X_
, I
Y_
, I
Z_
= 10mA; +25°C
V
X
, V
Y
, V
Z
= 1.0V
T
MIN
to T
MAX
V
X_
, V
Y_
, V
Z_
= 1.0V; R
L
= 50Ω;
C
L
= 35pF; Figure 1
V
X_
, V
Y_
, V
Z_
= 1.0V; R
L
= 50Ω;
C
L
= 35pF; Figure 1
V
X_
, V
Y_
, V
Z_
= 1.0V; R
L
= 50Ω;
C
L
= 35pF; Figure 2
V
X_
, V
Y_
, V
Z_
= 1V; R
L
= 50Ω;
C
L
= 35pF; Figure 3
V
GEN
= 0, R
GEN
= 0, C
L
= 1nF,
Figure 4
+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
1
-40
26
17
8
0
1.6
0.3
V
CC
2.5
3.5
0.4
0.6
17
30
32
20
22
30
32
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
On-Resistance (Note 4)
On-Resistance Match Between
Channels (Notes 4, 5)
Ω
Ω
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Address Transition Time
Break-Before-Make Time
(Note 7)
Charge Injection
DIGITAL I/O
Input Logic High
Input Logic Low
Input Leakage Current
POWER SUPPLY
Power-Supply Range
Positive Supply Current
V
CC
I
CC
V
CC
= 3.6V; V
A
, V
B
, V
C
,
V
EN A B L E
= 0 or 3.6V
1.6
3.6
1
V
µA
V
IH
V
IL
I
IN
_
T
MIN
to T
MAX
T
MIN
to T
MAX
V
A
, V
B
, V
C
= V
EN A B L E
= 0 or 3.6V T
MIN
to T
MAX
-1
0.000
1
0.4
+1
V
V
µA
t
ON
t
OFF
t
TRANS
t
BBM
Q
ns
ns
ns
ns
pC
Note 2:
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
Note 3:
Devices are tested at maximum hot temperature and are guaranteed by design and correlation at T
A
= +25°C and -40°C
specifications.
Note 4:
R
ON
and
∆R
ON
matching specifications for thin QFN-packaged parts are guaranteed by design.
Note 5:
∆R
ON
= R
ON(MAX)
- R
ON(MIN).
Note 6:
Flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7:
Guaranteed by design; not production tested.
Note 8:
Off-isolation = 20log10(V
COM_
/ V
NO
), V
COM_
= output, V
NO
= input to off switch.
Note 9:
Between any two channels.
4
_______________________________________________________________________________________
High-Speed, Low-Voltage, 0.7Ω CMOS Analog
Switches/Multiplexers
Typical Operating Characteristics
(GND = 0, T
A
= +25°C, unless otherwise noted.)
MAX4781/MAX4782/MAX4783
ON-RESISTANCE vs. V
X
, V
Y
, V
Z
MAX4781 toc01
ON-RESISTANCE vs. V
X
, V
Y
, V
Z
,
AND TEMPERATURE
MAX4781 toc02
LEAKAGE CURRENT vs. TEMPERATURE
V
CC
= 3.6V
MAX4781toc03
2.0
1.8
1.6
R
ON
(Ω)
V
CC
= 1.8V
1.0
0.9
0.8
0.7
R
ON
(Ω)
T
A
= +85°C
1000
ON
I
X
, I
Y
, I
Z
(pA)
100
OFF
1.4
1.2
1.0
0.8
0.6
V
CC
= 2.0V
V
CC
= 2.5V
V
CC
= 2.7V
V
CC
= 3.0V
0.6
0.5
0.4
0.3
0.2
T
A
= +25°C
T
A
= -40°C
10
V
CC
= 3.3V
0.4
0
V
CC
= 3.6V
0.1
0
0
V
CC
= 3.0V
1
0.5
1.0
1.5
2.0
2.5
3.0
-40
-15
10
35
60
85
V
X
, V
Y
, V
Z
(V)
TEMPERATURE (°C)
0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6
V
X
, V
Y
, V
Z
(V)
CHARGE INJECTION vs. V
X
, V
Y
, V
Z
MAX4781 toc04
SUPPLY CURRENT vs. TEMPERATURE
MAX4781 toc05
LOGIC THRESHOLD
vs. SUPPLY VOLTAGE
MAX4781 toc06
60
40
CHARGE INJECTION (pC)
20
0
V
CC
= 1.8V
1000
1.2
1.1
LOGIC THRESHOLD (V)
1.0
RISING
0.9
0.8
0.7
0.6
0.5
100
T
A
= +85°C
-20
-40
-60
-80
-100
-120
0
0.5
1.0
1.5
2.0
2.5
3.0
V
X
, V
Y
, V
Z
(V)
V
CC
= 3.0V
I
CC
(nA)
10
T
A
= +25°C
1
FALLING
0.1
0.01
1.6
2.0
2.4
T
A
= -40°C
2.8
3.2
3.6
1.6
2.1
2.6
3.1
3.6
V
CC
(V)
SUPPLY VOLTAGE (V)
TURN-ON/TURN-OFF TIME
vs. SUPPLY VOLTAGE
MAX4781 toc07
TURN-ON/TURN-OFF TIME
vs. TEMPERATURE
MAX4781 toc08
25
14
12
10
t
ON
20
TIME (ns)
t
ON
TIME (ns)
15
8
6
t
OFF
4
2
10
t
OFF
5
0
1.6
2.0
2.4
2.8
3.2
3.6
SUPPLY VOLTAGE (V)
0
-40
-15
10
35
TEMPERATURE (°C)
V
CC
= 3.0V
60
85
_______________________________________________________________________________________
5
嵌入式系统
