19-1415; Rev 2; 2/03
Fault-Protected, High-Voltage
Signal-Line Protectors
General Description
The MAX4506/MAX4507 multiple, two-terminal signal-line
protectors are pin-compatible with the industry-standard
MAX366/MAX367. These new circuit protectors feature
fault-protected inputs and Rail-to-Rail
®
signal handling
capability. The input pins are protected from overvoltage
faults up to ±36V with power on or ±40V with power off.
During a fault condition, the input terminal becomes an
open circuit and only nanoamperes of leakage current
flow from the source; but the switch output (OUT_) fur-
nishes typically 19mA from the appropriate polarity sup-
ply to the load. This ensures unambiguous rail-to-rail
outputs when a fault begins and ends.
The MAX4506 contains three independent protectors
while the MAX4507 contains eight independent protec-
tors. They can protect both unipolar and bipolar analog
signals using either unipolar (+9V to +36V) or bipolar
(±8V to ±18V) power supplies.
These devices have no logic control inputs; the protec-
tors are designed to be always-on when the supplies
are on. On-resistance is 100Ω max and matched within
7Ω, and on-leakage is less than 0.5nA at T
A
= +25°C.
The MAX4506 is available in 8-pin SO/DIP packages.
The MAX4507 is available in 20-pin SSOP and 18-pin
SO/DIP packages.
Features
o
Overvoltage Protection
±40V with Power Off
±36V with Power On
o
Open Signal Paths with Power Off
o
Output Clamps to Either Rail with an Input
Overvoltage
o
Any On Channel Output is Not Affected
by an Overvoltage to Any Other Channel
o
100Ω max On-Resistance
o
10ns Overvoltage Turn-On Delay
o
No Latchup During Power Sequencing
o
Rail-to-Rail Signal Handling
o
500Ω Output Clamp Resistance During
Overvoltage
MAX4506/MAX4507
Ordering Information
PART
MAX4506CSA
MAX4506CPA
MAX4506C/D
MAX4506ESA
MAX4506EPA
MAX4506MJA
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 SO
8 Plastic DIP
Dice*
8 SO
8 Plastic DIP
8 CERDIP**
Applications
Process-Control Systems
Hot-Insertion Boards/Systems
Data-Acquisition Systems
Redundant/Backup Systems
ATE Equipment
Sensitive Instruments
Ordering Information continued at end of data sheet.
*Contact
factory for dice specifications.
**Contact
factory for availability.
Typical Operating Circuit
SWITCHED +15V
Pin Configurations
TOP VIEW
P
MAX4506
1 IN1
2 IN2
3 IN3
4
V-
V+
8
+15V
IN1
1
IN2
2
8
7
V+
OUT1
OUT2
OUT3
OUT1 7
OUT2 6
OUT3 5
100k
OP AMP
MAX4506
IN3
3
6
5
V-
4
SO/DIP
-15V
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.
Pin Configurations continued at end of data sheet.
1
________________________________________________________________
Maxim Integrated Products
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.
Fault-Protected, High-Voltage
Signal-Line Protectors
MAX4506/MAX4507
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
IN_ or OUT_ .........................................................................±44V
IN_ Overvoltage with Power On...........................................±36V
IN_ Overvoltage with Power Off...........................................±40V
Continuous Current into Any Terminal..............................±30mA
Peak Current into Any Terminal
(pulsed at 1ms, 10% duty cycle).................................±70mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin Narrow SO (derate 5.88mW/°C above +70°C) ....471mW
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) .....727mW
8-Pin CERDIP (derate 8.00mW/°C above +70°C) ...........640mW
18-Pin Wide SO (derate 9.52mW/ °C above +70°C) .......762mW
18-Pin Plastic DIP (derate 11.11mW/ °C above +70°C) ...889mW
18-Pin CERDIP (derate 10.53mW/ °C above +70°C) ......842mW
20-Pin SSOP (derate 11.11mW/°C above +70°C) ...........640mW
Operating Temperature Ranges
MAX4506C_A /MAX4607C_ _ .............................0°C to +70°C
MAX4506E_A/MAX4607E_ _ ...........................-40°C to +85°C
MAX4506MJA/MAX4607MJN ........................-55°C to +125°C
Storage Temperature Range .............................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
RECOMMENDED OPERATING GUIDELINES
V+ to GND ..............................................................-0.3V to +40V
IN_ to OUT_..........................................................40V Differential
V- to GND ...............................................................-32V to +0.3V
Continuous Current into Any Terminal ..............................≤30mA
V+ to V- ..................................................................................40V
Peak Current into Any Terminal
IN_........................................................................................±40V
(pulsed at 1ms, 10% duty cycle) .................................≤70mA
OUT_ ...............................................................................V+ to V-
Note 1:
OUT_ pins are not fault protected. Signals on OUT_ exceeding V+ or V- are clamped by internal diodes. Limit forward-diode
current to maximum current rating.
Note 2:
IN_ pins are fault protected. Signals on IN_ exceeding -36V to +36V may damage the device. These limits apply with power
applied to V+ or V-, or ±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
(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 4)
Analog Signal-Path Resistance
V
IN_
V+ = +15V, V- = -15V,
V
IN_
= ±15V
V
IN_
= ±10V, I
OUT_
= 1mA
C, E, M
+25°C
R
ON
C, E
M
+25°C
Signal-Path Resistance Match
(Note 6)
∆R
ON
V
IN_
= V
OUT_
= ±10V, I
OUT
= 1mA
C, E
M
+25°C
Signal-Path Leakage Current
(Note 7)
Input Capacitance
FAULT PROTECTION
Fault-Protected Analog Signal
Range
Input Signal-Path Leakage
Current, Supplies On
V
IN_
(Notes
2, 3)
Applies with power on
Applies with power off
C, E, M
C, E, M
+25°C
I
IN_
V
IN_
= ±25V, V
OUT_
= open
C, E
M
2
-36
-40
-1
-10
-10
0.1
+36
+40
+1
+10
+10
V
µA
µA
I
OUT_ON
C
IN
V
OUT_
= ±10V, V
IN_
= ±10V or
floating
V
IN
= 0, f = 1MHz
C, E
M
+25°C
1
V-
65
V+
100
125
150
7
10
12
Ω
Ω
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
-
0.5
-40
-400
20
+0.5
+
40
+400
nA
pF
_______________________________________________________________________________________
Fault-Protected, High-Voltage
Signal-Line Protectors
ELECTRICAL CHARACTERISTICS —Dual Supplies (continued)
(V+ = +15V, V- = -15V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at TA = +25°C.) (Note 3)
PARAMETER
Input Signal-Path Leakage
Current, Supplies Off
Output Clamp Current,
Supplies On
Output Clamp Resistance,
Supplies On
± Fault Output Turn-On Delay
Time (Note 5)
± Fault Recovery Time (Note 5)
POWER SUPPLY
Power-Supply Range
V+, V-
MAX4506
I+
MAX4507
Power-Supply Current
V
IN_
= +15V
MAX4506
I-
MAX4507
C, E, M
+25°C
C, E
M
+25°C
C, E
M
+25°C
C, E
M
+25°C
C, E
M
-150
-175
-200
-250
-300
-400
-160
µA
-90
160
±8
90
±18
150
175
200
250
300
400
µA
V
SYMBOL
I
IN_
CONDITIONS
V
IN_
= ±40V, V
OUT_
= open,
V+ = 0, V- = 0
V
IN_
= +25V
V
IN_
= -25V
I
OUT
= 1mA
V
IN_
= +25V
V
IN_
= -25V
T
A
+25°C
C, E
M
I
OUT_
R
OUT_
+25°C
+25°C
+25°C
+25°C
+25°C
+25°C
MIN
-1
-10
-10
13
-26
19
-19
0.5
0.4
10
2.5
TYP
0.2
MAX
+1
+10
+10
26
-13
1.0
1.0
UNITS
µA
µA
mA
kΩ
ns
µs
MAX4506/MAX4507
R
L
= 10kΩ, V
IN_
= ±25V
R
L
= 10kΩ, V
IN_
= ±25V
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = +12V, V- = -0V, 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 4)
Analog Signal-Path Resistance
V
IN_
V+ = +12V, V- = 0
V
IN_
= +12V
V
IN_
= +10V, I
OUT_
= 1mA
C, E, M
+25°C
R
ON
C, E
M
+25°C
Signal-Path Resistance Match
(Note 6)
∆R
ON
V
IN_
= +10V, I
OUT_
= 1mA
C, E
M
+25°C
Signal-Path Leakage Current
(Note 7)
I
OUT_(ON)
V
IN
= +10V or floating
C, E
M
3
0
125
V+
200
250
300
12
15
20
Ω
Ω
V
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
-
0.5
-40
-400
0.05
+0.5
+40
+400
3
nA
_______________________________________________________________________________________
Fault-Protected, High-Voltage
Signal-Line Protectors
MAX4506/MAX4507
ELECTRICAL CHARACTERISTICS—Single Supply (continued)
(V+ = +12V, V- = -0V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 3)
PARAMETER
FAULT PROTECTION
Fault-Protected Analog Signal
Range (Notes 4, 5, 9)
Input Signal-Path Leakage
Current, Supply On (Note 9)
V
IN_
Applies with power on
Applies with power off
V
IN_
= ±25V, V
OUT_
= 0
C, E, M
C, E, M
+25°C
I
IN_
C, E
M
+25°C
Input Signal-Path Leakage
Current, Supply Off (Note 9)
Output Clamp Current,
Supply On
Output Clamp Resistance,
Supply On
± Fault Output Turn-On Delay
Time (Note 5)
± Fault Recovery Time (Note 5)
POWER SUPPLY
Power-Supply Range
V+
MAX4506
Power-Supply Current
I+
V
IN_
= +12V
MAX4507
C, E, M
+25°C
C, E
M
+25°C
C, E
M
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
17
+9
9
+36
25
30
40
40
60
80
µA
V
I
IN_
V
IN_
= ±40V
C, E
M
I
OUT_
R
OUT_
V
IN_
= 25V
V
IN_
= ±25V
R
L
= 10kΩ, V
IN_
= +25V
R
L
= 10kΩ, V
IN_
= +25V
+25°C
+25°C
+25°C
+25°C
-36
-40
-1
-10
-10
-1
-10
-10
3
5.5
1.0
10
2.5
0.2
0.2
+36
+40
+1
+10
+10
+1
+10
+10
10
2.5
V
µA
µA
µA
µA
mA
kΩ
ns
µs
SYMBOL
CONDITIONS
T
A
MIN
TYP
MAX
UNITS
The algebraic convention is used in this data sheet; the most negative value is shown in the minimum column.
See Fault-Free Analog Signal Range vs. Supply Voltages graph in the
Typical Operating Characteristics.
Guaranteed by design.
∆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.
Leakage testing for single-supply operation is guaranteed by testing with dual supplies.
Guaranteed by testing with dual supplies.
4
_______________________________________________________________________________________
Fault-Protected, High-Voltage
Signal-Line Protectors
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
MAX4506/MAX4507
ON-RESISTANCE vs. OUTPUT VOLTAGE
(DUAL SUPPLIES)
MAX4506/07 toc01
ON-RESISTANCE vs. OUTPUT VOLTAGE
(SINGLE SUPPLY)
MAX4506/07 toc02
ON-RESISTANCE vs. OUTPUT VOLTAGE
AND TEMPERATURE (DUAL SUPPLIES)
V+ = +15V
V- = -15V
T
A
= +125°C
T
A
= +85°C
T
A
= +70°C
60
40
20
T
A
= +25°C
T
A
= -40°C
T
A
= -55°C
MAX4506/07 toc03
140
120
100
R
ON
(Ω)
80
60
40
20
0
-20
-15
-10
-5
0
V
OUT_
(V)
5
10
15
V+ = +18V
V- = -18V
V+ = +10V
V- = -10V
V+ = +15V
V- = -15V
V+ = +8V
V- = -8V
250
V+ = +9V
200
V+ = +12V
R
ON
(Ω)
V- = 0V
120
100
80
R
ON
(Ω)
150
V+ = +20V
V+ = +30V
50
V+ = +36V
0
100
0
0
5
10
15
20
25
30
35
-15
-10
-5
0
V
OUT_
(V)
5
10
15
V
OUT_
(V)
20
ON-RESISTANCE vs. OUTPUT VOLTAGE
AND TEMPERATURE (SINGLE SUPPLY)
MAX4506/07 toc04
OUTPUT CLAMP RESISTANCE SUPPLIES ON
MAX4506/07 toc05
OUTPUT CLAMP CURRENT SUPPLIES ON
vs. TEMPERATURE
20
15
10
I
OUT
(mA)
5
0
-5
-10
-15
-20
-25
V+ = +15V
V- = -15V
MAX4506/07 toc06
MAX4506/07 toc09
250
V+ = +12V
V- = 0
T
A
= +125°C
T
A
= +85°C
T
A
= +70°C
0.8
0.7
0.6
R
OUT
(kΩ)
0.5
0.4
0.3
0.2
0.1
200
V+ = +15V
V- = -15V
V
IN
= ±25V
V
IN
= +25V
V
IN
= -25V
25
R
ON
(Ω)
150
100
T
A
= -40°C T
A
= +25°C
T
A
= -55°C
50
0
0
0
2
4
6
V
OUT_
(V)
8
10
12
-55 -35 -15
-5
25
45
65
85 105 125
TEMPERATURE (°C)
-55 -40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
OUTPUT TRANSFER CHARACTERISTICS
(DUAL SUPPLIES)
15
OUTPUT CLAMP VOLTAGE (V)
10
5
0
-5
-10
-15
-20
INPUT VOLTAGE
LINEARLY SWEPT
BETWEEN -30V
AND +30V
(V+ = +8V, V- = -8V)
(V+ = +10V, V- = -10V)
(V+ = +15V, V- = -15V)
(V+ = +18V, V- = -18V)
OUTPUT LOAD = 1MΩ
-30
-20
-10
0
10
20
30
INPUT VOLTAGE (V)
(V+ = +18V, V- = -18V)
(V+ = +15V, V- = -15V)
(V+ = +10V, V- = -10V)
(V+ = +8V, V- = -8V)
MAX4506/07 toc07
OUTPUT TRANSFER CHARACTERISTICS
(SINGLE SUPPLY)
35
OUTPUT CLAMP VOLTAGE (V)
30
25
20
15
10
5
0
0
5
V+ = +9V
V+ = +15V
V+ = +12V
V+ = +25V
OUTPUT LOAD = 1MΩ
V- = 0
V+ = +36V
MAX4506/07 toc08
FAULT-FREE ANALOG SIGNAL RANGE
vs. SUPPLY VOLTAGE
20
15
OUTPUT VOLTAGE (V)
10
5
0
-5
-10
-15
-20
20
40
INPUT VOLTAGE LINEARLY SWEPT
BETWEEN 0 AND 35V
10
15
20
25
30
35
40
INPUT VOLTAGE (V)
-20
-15
-10
-5
0
5
10
15
20
INPUT VOLTAGE (V)
_______________________________________________________________________________________
5
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