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Электронный компонент: MAX4784

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19-2365; Rev 3; 12/04
General Description
The MAX4780/MAX4784 are low on-resistance, low-
voltage, quad 2:1 analog multiplexers that operate from
a single +1.6V to +4.2V supply. These devices have
fast switching speeds (t
ON
= 20ns, t
OFF
= 8ns), handle
rail-to-rail analog signals, and consume less than 1W
of quiescent power.
When powered from a +2.7V supply, the MAX4780/
MAX4784 feature low 0.7
on-resistance (R
ON
), and
0.1
R
ON
flatness. The digital logic input is +1.8V
CMOS-logic compatible when using a single +3V supply.
The MAX4780/MAX4784 are available in 16-pin TSSOP
and 3mm x 3mm thin QFN packages.
Applications
Power Routing
Battery-Powered Systems
Audio and Video Signal Routing
Low-Voltage Data-Acquisition Systems
Communications Circuits
PCMCIA Cards
Cellular Phones
Modems
Hard Drives
Features
Single-Supply Operation from 1.6V to 4.2V
 Low R
ON
0.7
(+2.7V Supply)
2
(+1.8V Supply)
0.1 R
ON
Flatness (+2.7V Supply)
3mm x 3mm Thin QFN Package
 +1.8V CMOS Logic Compatible
Fast Switching: t
ON
= 20ns, t
OFF
= 8ns
MAX4780/MAX4784
0.7
, Low-Voltage, Quad 2:1 Analog
Multiplexers
________________________________________________________________ Maxim Integrated Products
1
Pin Configurations/Functional Diagrams/Truth Tables
Ordering Information
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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NC1
A0
V+
EN
NC4
NO4
COM4
NC3
NO3
COM3
GND
THIN QFN
COM2
NO2
NC2
COM1
NO1
CONTROL LOGIC
MAX4784
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NC1
A0
V+
A1
NC4
NO4
COM4
NC3
NO3
COM3
GND
THIN QFN
COM2
NO2
NC2
COM1
NO1
MAX4780
EN
1
A0
X
0
0
ON SWITCH
NONE
COM1-NC1
COM2-NC2
COM3-NC3
COM4-NC4
COM1-NO1
COM2-NO2
COM3-NO3
COM4-NO4
0
1
MAX4784
MAX4780
A0
0
1
A1
0
1
ON SWITCH
NC1, NC2
NO1, NO2
ON SWITCH
NC3, NC4
NO3, NO4
TOP VIEW
PART
TEMP RANGE
PIN-PACKAGE
MAX4780ETE
-40C to +85C
16 Thin QFN
MAX4780EUE
-40C to +85C
16 TSSOP
MAX4784ETE
-40C to +85C
16 Thin QFN
MAX4784EUE
-40C to +85C
16 TSSOP
Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.
MAX4780/MAX4784
0.7
, Low-Voltage, Quad 2:1 Analog
Multiplexers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS--Single +3V Supply
(V+ = +2.7V to +4.2V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = +3.0V,
T
A
= +25C.) (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.
Note 1: Signals on COM_, NO_, or NC_ exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum
current rating.
Voltages Referenced to GND
V+, A_, EN ..........................................................-0.3V to +4.6V
COM_, NO_, NC_ (Note 1) ........................-0.3V to (V+ + 0.3V)
Continuous Current COM_ , NO_, NC_ .........................300mA
Peak Current COM_, NO_, NC_
(pulsed at 1ms 10% duty cycle)..................................500mA
Continuous Power Dissipation (T
A
= +70C)
16-Pin Thin QFN (derate 14.7mW/C
above +70C)......................................................1176.5mW
16-Pin TSSOP (derate 9.4mW/C above +70C) .........755mW
Operating Temperature Range ...........................-40C to +85C
Maximum Junction Temperature .....................................+150C
Storage Temperature Range .............................-65C to +150C
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
0
V+
V
+25C
0.7
1
On-Resistance (Note 4)
R
ON
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1.5V
T
MIN
to T
MAX
1.2
+25C
0.1
0.15
On-Resistance Match
Between Channels
(Notes 4, 5)
R
ON
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1.5V
T
MIN
to T
MAX
0.2
+25C
0.1
0.2
On-Resistance Flatness
(Note 6)
R
FLAT(ON)
V+ = 2.7V,
I
COM
_ = 100mA,
V
NO
_ or V
NC
_ = 1V, 1.5V, 2V
T
MIN
to T
MAX
0.3
+25C
-1
0.002
+1
NO_ or NC_ Off-Leakage
Current (Note 7)
I
NO_(OFF)
,
I
NC_(OFF)
V+ = 3.6V,
V
COM
_ = 0.3V, 3.3V,
V
NO
_ or V
NC
_ = 3.3V, 0.3V
T
MIN
to T
MAX
-5
+5
nA
+25C
-1
0.002
+1
COM_ Off-Leakage Current
(MAX4784 Only) (Note 7)
I
COM_(OFF)
V+ = 3.6V,
V
COM
_ = 0.3V, 3.3V,
V
NO
_ or V
NC
_ = 3.3V, 0.3V,
or floating
T
MIN
to T
MAX
-5
+5
nA
+25C
-2
0.002
+2
COM_ On-Leakage Current
(Note 7)
I
COM_(ON)
V+ = 3.6V,
V
COM
_ = 3.3V, 0.3V,
V
NO
_ or V
NC
_ = 3.3V, 0.3V,
or floating
T
MIN
to T
MAX
-10
+10
nA
MAX4780/MAX4784
0.7
, Low-Voltage, Quad 2:1 Analog
Multiplexers
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS--Single +3V Supply (continued)
(V+ = +2.7V to +4.2V, V
IH
= +1.4V, V
IL
= +0.5V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at V+ = +3.0V,
T
A
= +25C.) (Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
SWITCH DYNAMIC CHARACTERISTICS
+25C
20
25
Turn-On Time
t
ON
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
30
ns
+25C
8
10
Turn-Off Time
t
OFF
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
18
ns
+25C
7
Break-Before-Make (Note 8)
t
BBM
V
NO
_, V
NC
_ = 1.5V,
R
L
= 50
, C
L
= 35pF,
Figure 2
T
MIN
to T
MAX
1
ns
Charge Injection
Q
V
GEN
= 0, R
GEN
= 0,
C
L
= 1.0nF, Figure 3
+25C
5
pC
NO_ or NC_ Off-Capacitance
C
OFF
f = 1MHz, Figure 4
+25C
33
pF
COM_ Off-Capacitance
C
COM_(OFF)
f = 1MHz, Figure 4
+25C
60
pF
COM_ On-Capacitance
C
COM_(ON)
f = 1MHz, Figure 4
+25C
85
pF
-3dB On-Channel Bandwidth
BW
Signal = 0, R
IN
= R
OUT
=
50
, C
L
= 5pF, Figure 5
123
MHz
Off-Isolation (Note 9)
V
ISO
f = 1M H z, V
C OM
_ = 1V
P - P
,
R
L
= 50
, C
L
= 5p F, Fi g ur e 5
+25C
-67
dB
Crosstalk (Note 10)
V
CT
f = 1M H z, V
C OM
_ = 1V
P - P
, R
L
= 50
, C
L
= 5p F, Fi g ur es 4, 5
+25C
-95
dB
Total Harmonic Distortion
THD
f = 20Hz to 20kHz,
V
COM
_ = 2V
P-P
, R
L
= 32
+25C
0.008
%
LOGIC INPUT (A_,
EN)
Input Logic High
V
IH
1.8
V
Input Logic Low
V
IL
0.5
V
Input Leakage Current
I
IN
V
EN
= 0 or +3.6V,
V
A0
= 0 or +3.6V
-1
0.005
+1
A
POWER SUPPLY
Power-Supply Range
V+
1.6
3.6
V
Positive Supply Current
I+
V+ = 3.6V, EN, A0 = 0 or V+,
all channels on or off
T
MIN
to T
MAX
2
A
MAX4780/MAX4784
0.7
, Low-Voltage, Quad 2:1 Analog
Multiplexers
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS--Single +1.8V Supply
(V+ = +1.8V, V
IH
= +1.0V, V
IL
= +0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25C.)
(Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
ANALOG SWITCH
Analog Signal Range
V
COM
_,
V
NO
_,
V
NC
_
0
V+
V
+25C
2
3
On-Resistance
R
ON
I
COM
_ = 10mA,
V
NO
_ or V
NC
_ = 1.0V
T
MIN
to T
MAX
5
+25C
-1
+1
NO_ or NC_ Off-Leakage
Current (Note 7)
I
NO_(OFF)
,
I
NC_(OFF)
V
COM
_ = 0.3V, 1.5V,
V
NO
_ or V
NC
_ = 1.5V,
0.3V
T
MIN
to T
MAX
-5
+5
nA
+25C
-1
+1
COM_ Off-Leakage Current
(MAX4784 Only) (Note 7)
I
COM_(OFF)
V
COM
_ = 0.3V, 1.5V,
V
NO
_ or V
NC
_ = 1.5V,
0.3V
T
MIN
to T
MAX
-5
+5
nA
+25C
-2
+2
COM_ On-Leakage Current
(Note 7)
I
COM_(ON)
V
COM
_
= 0.3V, 1.5V,
V
NO
_ or V
NC
_ = 0.3V,
1.5V, or floating
T
MIN
to T
MAX
-10
+10
nA
SWITCH DYNAMIC CHARACTERISTICS
+25C
25
30
Turn-On Time
t
ON
V
NO
_, V
NC
_ = 1.0V,
RL = 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
35
ns
+25C
10
15
Turn-Off Time
t
OFF
V
NO
_, V
NC
_ = 1.0V,
R
L
= 50
, C
L
= 35pF,
Figure 1
T
MIN
to T
MAX
20
ns
+25C
10
Break-Before-Make (Note 8)
t
BBM
V
NO
_, V
NC
_ = 1.0V,
R
L
= 50
, C
L
= 35pF,
Figure 2
T
MIN
to T
MAX
1
ns
Charge Injection
Q
V
GEN
= 0, R
GEN
= 0,
C
L
= 1nF, Figure 3
+25C
5
pC
MAX4780/MAX4784
0.7
, Low-Voltage, Quad 2:1 Analog
Multiplexers
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS--Single +1.8V Supply (continued)
(V+ = +1.8V, V
IH
= +1.0V, V
IL
= +0.4V, T
A
= T
MIN
to T
MAX
, unless otherwise specified. Typical values are at T
A
= +25C.)
(Notes 2, 3)
PARAMETER
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
LOGIC INPUT (A_,
EN)
Input Logic High
V
IH
1.8
V
Input Logic Low
V
IL
0.4
V
Input Leakage Current
I
IN
V
EN
= 0 or +3.6V,
V
A0
= 0 or +3.6V
-1
+1
A
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:
-40
C specifications are guaranteed by design.
Note 4:
R
ON
and
R
ON
matching specifications for 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 the minimum value of on-resistance as measured over the
specified analog signal ranges.
Note 7:
Leakage parameters are 100% tested at T
A
= +85
C, and guaranteed by correlation over the full rated temperature range.
Note 8:
Guaranteed by design.
Note 9:
Off-isolation = 20log
10
(V
COM
_/V
NO
_), V
COM
_ = output, V
NO
_ = input to off switch.
Note 10: Between two switches.
Note 11: Parts are guaranteed to 1 million cycles of operation. (Cycle = switch on
switch off switch on.)
Note 12: The minimum load resistance is 8
. (See the Typical Application Circuit.)
Typical Operating Characteristics
(T
A
= +25C, unless otherwise noted.)
0
0.4
0.2
0.8
0.6
1.2
1.0
1.4
1.8
1.6
2.0
0
1.0
1.5
0.5
2.0
2.5
3.0
ON-RESISTANCE vs. V
COM
AND TEMPERATURE
MAX4780/MAX4784 toc02
V
COM
(V)
R
ON
(
)
V+ = +1.8V, T
A
= +25
C
V+ = +1.8V, T
A
= -40
C
V+ = +1.8V, T
A
= +85
C
V+ = +3.0V, T
A
= -40
C
V+ = +3.0V, T
A
= +25
C
V+ = +3.0V, T
A
= +85
C
1
100
10
10,000
1000
ON, V+ = +3.0V
OFF, V+ = +3.0V
ON, V+ = +1.8V
OFF, V+ = +1.8V
-40
-15
10
35
60
85
ON/OFF-LEAKAGE CURRENT
vs. TEMPERATURE
MAX4780/MAX4784 toc03
TEMPERATURE (
C)
LEAKAGE CURRENT (pA)
0
1.0
0.5
2.0
1.5
3.0
2.5
0
0.8 1.2
0.4
1.6 2.0 2.4 2.8 3.2 3.6
ON-RESISTANCE vs. V
COM
MAX4780/MAX4784 toc01
V
COM
(V)
R
ON
(
)
V+ = +1.6V
V+ = +2.5V
V+ = +2.7V
V+ = +3.0V
V+ = +1.8V
V+ = +3.6V