19-1452; Rev 1; 10/99
Quad, Rail-to-Rail, Fault-Protected,
SPDT Analog Switch
General Description
The MAX4533 quad, single-pole/double-throw (SPDT),
fault-protected analog switch is pin-compatible with the
industry-standard MAX333 and MAX333A. The MAX4533
features fault-protected inputs and Rail-to-Rail® signal
handling. The normally open (NO_ ) and normally closed
(NC_ ) terminals are protected from overvoltage faults up
to ±25V with power on and up to ±40V with power off.
During a fault condition, NO_ and NC_ become high
impedance with only nanoamperes of leakage current
flowing to the source. In addition, the output (COM_)
clamps to the appropriate polarity supply rail and pro-
vides up to ±10mA of load current. This ensures unam-
biguous rail-to-rail outputs when a fault occurs.
The MAX4533 operates from dual ±4.5V to ±18V power
supplies or a single +9V to +36V supply. All digital inputs
have +0.8V and +2.4V logic thresholds, ensuring both
TTL and CMOS logic compatibility when using ±15V
supplies or a +12V supply. On-resistance is 175Ω max
and is matched between switches to 10Ω max. The off-
leakage current is only 0.5nA at T
A
= +25°C and 10nA at
T
A
= +85°C.
o
Rail-to-Rail Signal Handling
o
±40V Fault Protection with Power Off
±25V Fault Protection with ±15V Supplies
o
All Switches Off with Power Off
o
No Power-Supply Sequencing Required During
Power-Up or Power-Down
o
Output Clamped to Appropriate Supply Voltage
During Fault Condition—No Transition Glitch
o
1kΩ (typ) Output Clamp Resistance During
Overvoltage
o
175Ω (max) Signal Paths with ±15V Supplies
o
20ns (typ) Fault Response Time
o
±4.5V to ±18V Dual Supplies
+9V to +36V Single Supply
o
Pin-Compatible with Industry-Standard
MAX333/MAX333A
o
TTL/CMOS-Compatible Logic Inputs with ±15V or
Single +9V to +15V Supplies
Features
MAX4533
†
Applications
Redundant/Backup Systems
Test Equipment
Communications Systems
Industrial and Process Control
Portable Instruments
Data-Acquisition
Systems
Avionics Systems
Ordering Information
PART
MAX4533CAP
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
20 SSOP
MAX4533CWP
0°C to +70°C
20 Wide SO
Ordering Information continued at end of data sheet.
Typical Operating Circuit
INPUTS
V1
V2
OUTPUTS
V1 - V2
Pin Configuration/
Functional Diagram
TOP VIEW
IN1
1
NO1
2
20
IN4
19
NO4
18
COM4
17
NC4
16
V+
OSC
IN
COM1
3
NC1
4
MAX4533
V-
5
GND
6
MAX4533
15
N.C.
14
NC3
13
COM3
12
NO3
11
IN3
V3
V4
FLYING CAPACITOR LEVEL TRANSLATOR
(2-CHANNEL)
V3 - V4
NC2
7
COM2
8
NO2
9
IN2
10
SSOP/SO/DIP/CERDIP
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
†
Pg
SWITCHES ARE SHOWN WITH LOGIC "0" INPUT
N.C. = NOT INTERNALLY CONNECTED
________________________________________________________________
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.
Quad, Rail-to-Rail, Fault-Protected,
SPDT Analog Switch
MAX4533
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to GND
V+ ........................................................................-0.3V to +44.0V
V- .........................................................................-44.0V to +0.3V
V+ to V-................................................................-0.3V to +44.0V
COM_, IN_ (Note 1) ............................. (V- - 0.3V) to (V+ + 0.3V)
NC_, NO_ (Note 2)..................................(V+ - 40V) to (V- + 40V)
NC_, NO_ to COM_ .................................................-40V to +40V
NC_, NO_ Overvoltage with Switch Power On
(supplies at ±15V) ................................................-30V to +30V
NC_, NO_ Overvoltage with Switch Power Off ........-40V to +40V
Continuous Current into Any Terminal..............................±30mA
Peak Current into Any Terminal
(pulsed at 1ms,10% duty cycle)....................................±50mA
Continuous Power Dissipation (T
A
= +70°C)
20-Pin SSOP (derate 10.53mW/°C above +70°C) ........842mW
20-Pin Wide SO (derate 10.00mW/°C above +70°C) .. 800mW
20-Pin Plastic DIP (derate 11.11mW/°C above +70°C) 889mW
20-Pin CERDIP (derate 11.11mW/°C above +70°C).....889mW
Operating Temperature Ranges
MAX4533C_ _ ......................................................0°C to +70°C
MAX4533E_ _ ...................................................-40°C to +85°C
MAX4533M_ _.................................................-55°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1:
COM_ and IN_ pins are not fault protected. Signals on COM_ or IN_ exceeding V+ or V- are clamped by internal diodes.
Limit forward diode current to maximum current rating.
Note 2:
NC_ and NO_ pins are fault protected. Signals on NC_ or NO_ exceeding -25V to +25V may damage the device. These
limits apply with power applied to V+ or V-. The limit is ±40V with V+ = V- = 0.
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—Dual Supplies
(V+ = +15V, V- = -15V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER
ANALOG SWITCH
Fault-Free Analog Signal Range
(Note 2)
COM_ to NO_ or COM_ to NC_
On-Resistance
COM_ to NO_ or COM_ to NC_
On-Resistance Match Between
Channels (Note 4)
On-Resistance Flatness
NO_ or NC_ Off-Leakage
Current (Note 5)
COM_ On-Leakage Current
(Note 5)
FAULT
Fault-Protected Analog Signal
Range (Note 2)
COM_ Output Leakage Current,
Supplies On
NO_ or NC_ Off Input Leakage
Current, Supplies On
2
V
NO_
, V
NC_
Applies with power on
Applies with power off
V
NO_
or V
NC_
= ±25V,
no connection to “ON” channel
V
NO
_ or V
NC
_ = ±25V,
V
COM
_ = 10V
+25°C
+25°C
+25°C
C, E
M
+25°C
C, E
M
-25
-40
-10
-200
-10
-20
-200
-10
+25
+40
10
200
10
20
200
10
V
nA
µA
nA
µA
I
NO_(OFF),
I
NC_(OFF)
V
NO_
, V
NC_
V+ = +15V, V- = -15V,
V
NO
_ or V
NC
_ = ±15V
V
NO
_ or V
NC
_ = ±10V,
I
COM
_ = 1mA
V
NO
_ or V
NC
_ = ±10V,
I
COM
_ = 1mA
V
COM_
= +5V, 0, -5V,
I
COM_
= 1mA
V
NO
_ or V
NC
_ = ±14V,
V
COM
_ = 14V
C, E, M
+25°C
C, E
M
+25°C
C, E
M
+25°C
-0.5
-10
-200
-0.5
-20
-400
4
0.02
0.5
10
200
0.5
20
400
V-
125
V+
175
200
250
6
10
15
Ω
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
R
ON
1
∆
R
ON
Ω
Ω
I
COM_(ON)
+25°C
C, E
M
+25°C
V
COM_
= ±14V,
C, E
V
NO_
or V
NC_
= ±14V or floating
M
nA
I
COM_
_______________________________________________________________________________________
±
I
NO_,
I
NC_
±
0.01
nA
Quad, Rail-to-Rail, Fault-Protected,
SPDT Analog Switch
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +15V, V- = -15V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER
NO_ or NC_ Input Leakage
Current, Supplies Off
COM_ On-Clamp Output
Current, Supplies On
COM_ On-Clamp Output
Resistance, Supplies On
±Fault Output Clamp Turn-On
Delay Time (Note 6)
±Fault Recovery Time
(Note 6)
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High or
Low
V
IN_H
V
IN_L
I
IN_H,
I
IN_L
V
IN_
= +0.8V or +2.4V
C, E, M
C, E, M
+25°C
C, E, M
+25°C
C, E
M
+25°C
C, E
M
+25°C
+25°C
+25°C
+25°C
+25°C
10
-1
-5
100
0.03
2.4
0.8
1
5
250
400
600
150
300
450
V
V
µA
SYMBOL
I
NO_,
I
NC_
CONDITIONS
V
NO_
or V
NC_
= ±40V,
V+ = 0, V- = 0
V
NO_
or V
NC_
= +25V
V
NO_
or V
NC_
= -25V
V
NO_
or V
NC
= ±25V
R
L
= 10kΩ,
V
NO_
or V
NC_
= ±25V
R
L
= 10kΩ,
V
NO_
or V
NC_
= ±25V
T
A
+25°C
C, E
M
+25°C
+25°C
+25°C
C, E, M
+25°C
+25°C
MIN
-20
-200
-10
8
-12
TYP
0.1
MAX
20
200
10
13
-7
2.5
3
UNITS
nA
µA
mA
kΩ
ns
µs
MAX4533
I
COM_
R
COM_
11
-10
1.0
20
2.5
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
t
ON
V
COM_
= ±10V,
R
L
= 2kΩ; Figure 2
V
NO_
= ±10V,
R
L
= 2kΩ; Figure 2
V
COM_
= ±10V,
R
L
= 1kΩ; Figure 3
C
L
= 100pF,
V
COM_
= 0; Figure 4
f = 1MHz; Figure 5
f = 1MHz; Figure 5
R
L
= 50Ω, C
L
= 15pF,
V
N_
= 1V
RMS
, f = 1MHz;
Figure 6
R
L
= 50Ω, C
L
= 15pF,
V
N_
= 1V
RMS
, f = 1MHz;
Figure 6
ns
60
Turn-Off Time
t
OFF
ns
Break-Before-Make Time Delay
Charge Injection (Note 6)
NO_ or NC_ Off-Capacitance
COM_ On-Capacitance
Off-Isolation (Note 7)
t
BBM
Q
C
N_(OFF)
C
COM_(ON)
V
ISO
50
1.5
5
12
-62
ns
pC
pF
pF
dB
Channel-to-Channel Crosstalk
(Note 8)
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V- Supply Current
GND Supply Current
V
CT
+25°C
-66
dB
V+, V-
I+
I-
I
GND
All V
IN_
= 0 or +5V,
V
NO_
= V
NC_
= 0
All V
IN_
= 0 or +5V,
V
NO_
= V
NC_
= 0
All V
IN_
= 0 or +5V,
V
NO_
= V
NC_
= 0
+25°C
C, E, M
+25°C
C, E, M
+25°C
C, E, M
±4.5
±18
600
1000
400
600
300
450
V
µA
µA
µA
_______________________________________________________________________________________
3
Quad, Rail-to-Rail, Fault-Protected,
SPDT Analog Switch
MAX4533
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = +12V, V- = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER
ANALOG SWITCH
Fault-Free Analog Signal Range
(Note 2)
COM_ to NO_, COM_ to NC_
On-Resistance
COM_ -NO_ On-Resistance
Match Between Channels
(Note 4)
NO_ or NC_ Off-Leakage
Current (Notes 5, 9)
COM_ On-Leakage Current
(Notes 5, 9)
FAULT
Fault-Protected Analog Signal
Range (Note 2)
COM_ Output Leakage Current,
Supply On (Note 9)
NO_ or NC_ Off Input Leakage
Current, Supply On (Note 9)
NO_ or NC_ Input Leakage
Current, Supply Off (Note 9)
COM_ On-Clamp Output
Current, Supply On
COM_ On-Clamp Output
Resistance, Supply On
LOGIC INPUT
IN_ Input Logic Threshold High
IN_ Input Logic Threshold Low
IN_ Input Current Logic High or
Low
V
NO_
, V
NC_
Applies with power on
Applies with power off
V
NO_
or V
NC_
= ±25V,
V+ = +12V,
no connection to “ON” channel
V
NO_
or V
NC_
= ±25V,
V
COM_
= 0,
V+ = +12V
V
NO_
or V
NC_
= ±40V,
V+ = 0, V- = 0
V
NO_
or V
NC_
= ±25V,
V+ = +12V
V
NO_
or V
NC_
= ±25V,
V+ = +12V
+25°C
+25°C
+25°C
C, E
M
+25°C
C, E
M
+25°C
C, E
M
+25°C
+25°C
-25
-40
-10
-200
-10
-20
-200
-10
-20
-200
-10
2
+25
+40
10
200
10
20
200
10
20
200
10
5
5
V
nA
µA
nA
µA
nA
µA
mA
kΩ
V
NO_
, V
NC_
V+ = +12V, V- = 0,
V
NO
_ or V
NC
_ = +12V or 0
V+ = +12V,
V
NO
_ or V
NC
_ = +10V,
I
COM
_ = 1mA
V+ = +12V,
V
NO
_ or V
NC
_ = +10V,
I
COM
_ = 1mA
C, E, M
+25°C
C, E
M
+25°C
0
260
V+
390
450
525
10
20
30
0.5
10
200
0.5
20
400
Ω
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
R
ON
4
∆
R
ON
I
NO_(OFF),
I
NC_(OFF)
I
COM_(ON)
C, E
M
+25°C
V+ = +12V,
C, E
V
COM_
= +10V, +1V,
V
NO_
or V
NC_
= +1V, +10V
M
+25°C
V+ = +12V,
C, E
V
COM_
= +10V,
V
NO_
or V
NC_
= +10V or floating
M
Ω
-0.5
-10
-200
-0.5
-20
-400
0.01
nA
0.01
nA
I
COM_
I
NO_,
I
NC_
0.1
I
NO_,
I
NC_
I
COM_
R
COM_
3
2.4
V
IN_H
V
IN_L
I
IN_H,
I
IN_L
V
IN_
= +0.8V or +2.4V
C, E, M
C, E, M
+25°C
C, E, M
2.4
-1
-5
0.03
0.8
1
5
V
V
µA
4
_______________________________________________________________________________________
Quad, Rail-to-Rail, Fault-Protected,
SPDT Analog Switch
ELECTRICAL CHARACTERISTICS—Single Supply (continued)
(V+ = +12V, V- = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER
SYMBOL
CONDITIONS
V
COM_
= +10V,
R
L
= 2kΩ; Figure 2
V
COM_
= +10V,
R
L
= 2kΩ; Figure 2
V
COM_
= +10V,
R
L
= 1kΩ; Figure 3
C
L
= 100pF,
V
COM_
= 0; Figure 4
f = 1MHz; Figure 5
f = 1MHz; Figure 5
R
L
= 50Ω, C
L
= 15pF,
V
NO_
= 1V
RMS
, f = 1MHz;
Figure 6
R
L
= 50Ω, C
L
= 15pF,
V
NO_
= 1V
RMS
, f = 1MHz;
Figure 6
T
A
+25°C
C, E, M
+25°C
C, E, M
+25°C
+25°C
+25°C
+25°C
+25°C
5
100
2
5
15
-62
100
MIN
TYP
200
MAX
500
1000
300
900
UNITS
SWITCH DYNAMIC CHARACTERISTICS
Turn-On Time
Turn-Off Time
Break-Before-Make Time Delay
Charge Injection
NO_ or NC_ Off-Capacitance
COM_ On-Capacitance
Off-Isolation (Note 7)
t
ON
t
OFF
t
BBM
Q
C
N_(OFF)
C
COM_(ON)
V
ISO
ns
ns
ns
pC
pF
pF
dB
MAX4533
Channel-to-Channel Crosstalk
(Note 8)
POWER SUPPLY
Power-Supply Range
V+ Supply Current
V
CT
+25°C
-65
dB
V+
I+
All V
IN_
= 0 or +5V,
V
NO_
= V
NC_
= 0
All V
IN_
= 0 or +12V,
V
NO_
= V
NC_
= 0
All V
IN_
= 0 or +5V,
V
NO_
= V
NC_
= 0
C, E, M
+25°C
C, E, M
+25°C
C, E, M
+25°C
C, E, M
9
36
350
550
200
350
350
550
V
µA
µA
µA
V- and GND Supply Current
I
GND
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
∆R
ON
= R
ON(MAX)
- R
ON(MIN)
.
Leakage parameters are 100% tested at maximum-rated hot temperature and guaranteed by correlation at T
A
= +25°C.
Guaranteed by design.
Off-isolation = 20log10(V
COM_
/ V
NO_
), V
COM_
= output, V
NO_
= input to off switch.
Between any two analog inputs.
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
_______________________________________________________________________________________
5
单片机
