Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4
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19-1415; 2/03
Fault-Protected, High-Voltage Signal-Line Protectors
MAX4506/MAX4507 multiple, two-terminal signal-line protectors pin-compatible with industry-standard MAX366/MAX367. These circuit protectors feature fault-protected inputs Rail-to-Rail® signal handling capability. input pins protected from overvoltage faults ±36V with power ±40V with power off. During fault condition, input terminal becomes open circuit only nanoamperes leakage current flow from source; switch output (OUT_) furnishes typically 19mA from appropriate polarity supply load. This ensures unambiguous rail-to-rail outputs when fault begins ends. MAX4506 contains three independent protectors while MAX4507 contains eight independent protectors. They protect both unipolar bipolar analog signals using either unipolar (+9V +36V) bipolar (±8V ±18V) power supplies. These devices have logic control inputs; protectors designed always-on when supplies On-resistance matched within on-leakage less than 0.5nA +25°C. MAX4506 available 8-pin SO/DIP packages. MAX4507 available 20-pin SSOP 18-pin SO/DIP packages.
Features
Overvoltage Protection ±40V with Power ±36V with Power Open Signal Paths with Power Output Clamps Either Rail with Input Overvoltage Channel Output Affected Overvoltage Other Channel On-Resistance 10ns Overvoltage Turn-On Delay Latchup During Power Sequencing Rail-to-Rail Signal Handling Output Clamp Resistance During Overvoltage
MAX4506/MAX4507
Ordering Information
PART MAX4506CSA MAX4506CPA MAX4506C/D MAX4506ESA MAX4506EPA MAX4506MJA TEMP RANGE +70°C +70°C +70°C -40°C +85°C -40°C +85°C -55°C +125°C PIN-PACKAGE Plastic Dice* Plastic CERDIP**
Applications
Process-Control Systems Hot-Insertion Boards/Systems Data-Acquisition Systems Redundant/Backup Systems Equipment Sensitive Instruments
Ordering Information continued data sheet. *Contact factory dice specifications. **Contact factory availability.
Typical Operating Circuit
SWITCHED +15V
Configurations
VIEW
MAX4506
+15V
OUT1 OUT2 OUT3
OUT1 OUT2 OUT3 100k
MAX4506
SO/DIP
-15V
Rail-to-Rail registered trademark Nippon Motorola, Ltd.
Configurations continued data sheet.
Maxim Integrated Products
pricing, delivery, ordering information, please contact Maxim/Dallas Direct! 1-888-629-4642, visit Maxim's website www.maxim-ic.com.
Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4507
ABSOLUTE MAXIMUM RATINGS
(Voltages Referenced GND) .-0.3V +44.0V .-44.0V +0.3V V-.-0.3V +44.0V OUT_ .±44V Overvoltage with Power On.±36V Overvoltage with Power Off.±40V Continuous Current into Terminal.±30mA Peak Current into Terminal (pulsed 1ms, duty cycle).±70mA Continuous Power Dissipation +70°C) 8-Pin Narrow (derate 5.88mW/°C above +70°C) .471mW 8-Pin Plastic (derate 9.09mW/°C above +70°C) .727mW 8-Pin CERDIP (derate 8.00mW/°C above +70°C) .640mW 18-Pin Wide (derate 9.52mW/ above +70°C) .762mW 18-Pin Plastic (derate 11.11mW/ above +70°C) .889mW 18-Pin CERDIP (derate 10.53mW/ above +70°C) .842mW 20-Pin SSOP (derate 11.11mW/°C above +70°C) .640mW Operating Temperature Ranges MAX4506C_A /MAX4607C_ .0°C +70°C MAX4506E_A/MAX4607E_ .-40°C +85°C MAX4506MJA/MAX4607MJN .-55°C +125°C Storage Temperature Range .-65°C +160°C Lead Temperature (soldering, 10s) .+300°C
RECOMMENDED OPERATING GUIDELINES
.-0.3V +40V OUT_.40V Differential .-32V +0.3V Continuous Current into Terminal .30mA .40V Peak Current into Terminal IN_.±40V (pulsed 1ms, duty cycle) .70mA OUT_ VNote OUT_ pins fault protected. Signals OUT_ exceeding clamped internal diodes. Limit forward-diode current maximum current rating. Note pins fault protected. Signals exceeding -36V +36V damage device. These limits apply with power applied ±40V with
Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated operational sections specifications implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
ELECTRICAL CHARACTERISTICS
+15V, -15V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER ANALOG SWITCH Fault-Free Analog Signal Range (Note Analog Signal-Path Resistance VIN_ +15V, -15V, VIN_ ±15V VIN_ ±10V, IOUT_ +25°C +25°C Signal-Path Resistance Match (Note VIN_ VOUT_ ±10V, IOUT +25°C Signal-Path Leakage Current (Note Input Capacitance FAULT PROTECTION Fault-Protected Analog Signal Range Input Signal-Path Leakage Current, Supplies VIN_ (Notes Applies with power Applies with power +25°C IIN_ VIN_= ±25V, VOUT_ open IOUT_ON VOUT_ ±10V, VIN_ ±10V floating 1MHz +25°C SYMBOL CONDITIONS UNITS
-0.5
-400
+0.5
+400
Fault-Protected, High-Voltage Signal-Line Protectors
ELECTRICAL CHARACTERISTICS -Dual Supplies (continued)
+15V, -15V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER Input Signal-Path Leakage Current, Supplies Output Clamp Current, Supplies Output Clamp Resistance, Supplies Fault Output Turn-On Delay Time (Note Fault Recovery Time (Note POWER SUPPLY Power-Supply Range VMAX4506 MAX4507 Power-Supply Current VIN_ +15V MAX4506 IMAX4507 +25°C +25°C +25°C +25°C -150 -175 -200 -250 -300 -400 -160 SYMBOL IIN_ CONDITIONS VIN_= ±40V, VOUT_ open, VIN_= +25V VIN_= -25V IOUT VIN_= +25V VIN_= -25V +25°C IOUT_ ROUT_ +25°C +25°C +25°C +25°C +25°C +25°C UNITS
MAX4506/MAX4507
10k, VIN_ ±25V 10k, VIN_ ±25V
ELECTRICAL CHARACTERISTICS-Single Supply
+12V, -0V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER ANALOG SWITCH Fault-Free Analog Signal Range (Note Analog Signal-Path Resistance VIN_ +12V, VIN_ +12V VIN_ +10V, IOUT_ +25°C +25°C Signal-Path Resistance Match (Note VIN_ +10V, IOUT_ +25°C Signal-Path Leakage Current (Note IOUT_(ON) +10V floating SYMBOL CONDITIONS UNITS
-0.5
-400
0.05
+0.5 +400
Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4507
ELECTRICAL CHARACTERISTICS-Single Supply (continued)
+12V, -0V, TMIN TMAX, unless otherwise noted. Typical values +25°C.) (Note PARAMETER FAULT PROTECTION Fault-Protected Analog Signal Range (Notes Input Signal-Path Leakage Current, Supply (Note VIN_ Applies with power Applies with power VIN_= ±25V, VOUT_ +25°C IIN_ +25°C Input Signal-Path Leakage Current, Supply (Note Output Clamp Current, Supply Output Clamp Resistance, Supply Fault Output Turn-On Delay Time (Note Fault Recovery Time (Note POWER SUPPLY Power-Supply Range MAX4506 Power-Supply Current VIN_ +12V MAX4507 +25°C +25°C Note Note Note Note Note Note Note IIN_ VIN_= ±40V IOUT_ ROUT_ VIN_= VIN_= ±25V 10k, VIN_ +25V 10k, VIN_ +25V +25°C +25°C +25°C +25°C SYMBOL CONDITIONS UNITS
algebraic convention used this data sheet; most negative value shown minimum column. Fault-Free Analog Signal Range Supply Voltages graph Typical Operating Characteristics. Guaranteed design. RON(MAX) RON(MIN) Leakage parameters 100% tested maximum rated temperature guaranteed correlation +25°C. Leakage testing single-supply operation guaranteed testing with dual supplies. Guaranteed testing with dual supplies.
Fault-Protected, High-Voltage Signal-Line Protectors
Typical Operating Characteristics
+25°C, unless otherwise noted.)
MAX4506/MAX4507
ON-RESISTANCE OUTPUT VOLTAGE (DUAL SUPPLIES)
MAX4506/07 toc01
ON-RESISTANCE OUTPUT VOLTAGE (SINGLE SUPPLY)
MAX4506/07 toc02
ON-RESISTANCE OUTPUT VOLTAGE TEMPERATURE (DUAL SUPPLIES)
+15V -15V +125°C +85°C +70°C +25°C -40°C -55°C
MAX4506/07 toc03
VOUT_ +18V -18V +10V -10V +15V -15V
+12V
+20V +30V +36V
VOUT_ VOUT_
ON-RESISTANCE OUTPUT VOLTAGE TEMPERATURE (SINGLE SUPPLY)
MAX4506/07 toc04
OUTPUT CLAMP RESISTANCE SUPPLIES
MAX4506/07 toc05
OUTPUT CLAMP CURRENT SUPPLIES TEMPERATURE
IOUT (mA) +15V -15V
MAX4506/07 toc06 MAX4506/07 toc09
+12V +125°C +85°C +70°C
ROUT
+15V -15V ±25V +25V -25V
-40°C +25°C -55°C
VOUT_ TEMPERATURE (°C)
TEMPERATURE (°C)
OUTPUT TRANSFER CHARACTERISTICS (DUAL SUPPLIES)
OUTPUT CLAMP VOLTAGE INPUT VOLTAGE LINEARLY SWEPT BETWEEN -30V +30V +8V, -8V) +10V, -10V) +15V, -15V) +18V, -18V) OUTPUT LOAD INPUT VOLTAGE +18V, -18V) +15V, -15V) +10V, -10V) +8V, -8V)
MAX4506/07 toc07
OUTPUT TRANSFER CHARACTERISTICS (SINGLE SUPPLY)
OUTPUT CLAMP VOLTAGE +15V +12V +25V OUTPUT LOAD +36V
MAX4506/07 toc08
FAULT-FREE ANALOG SIGNAL RANGE SUPPLY VOLTAGE
OUTPUT VOLTAGE
INPUT VOLTAGE LINEARLY SWEPT BETWEEN INPUT VOLTAGE
INPUT VOLTAGE
Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4507
Typical Operating Characteristics (continued)
+25°C, unless otherwise noted.)
FAULT-FREE OUTPUT LEAKAGE CURRENT WITH SUPPLIES
MAX45506/07 toc10
INPUT FAULT LEAKAGE CURRENT WITH SUPPLIES
MAX45506/07 toc11
MAX4506 POWER-SUPPLY CURRENT TEMPERATURE
-100 -125 -150 SINGLE SUPPLY +12V +15V -15V
MAX45506/07 toc12
100n LEAKAGE CURRENT 100p 0.1p 0.01p
VOUT
100n LEAKAGE CURRENT +25V +15V, -15V)
IOUT +12V,
100p 0.1p +25V +12V,
SUPPLY CURRENT (µA)
IOUT +15V, -15V)
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
MAX4507 POWER-SUPPLY CURRENT TEMPERATURE
SUPPLY CURRENT (µA) -100 -150 -200 -250 TEMPERATURE (°C) SINGLE SUPPLY +15V -15V
MAX45506/07 toc13
SUPPLY CURRENT INPUT VOLTAGE
MAX45506/07 toc14
FREQUENCY RESPONSE
RESPONSE (dB) CROSSTALK +15V -15V BANDWIDTH
MAX4506/07 toc15
SUPPLY CURRENT (µA) -100
INPUT VOLTAGE
-100 0.01 1000
FREQUENCY (MHz)
FAULT-FREE SIGNAL PERFORMANCE
MAX45506/07 toc16
INPUT OVERVOLTAGE OUTPUT CLAMPING
MAX45506/07 toc17
FAULT RECOVERY
MAX45506/07 toc18
+15V 10V/div -15V +15V OUT_ 10V/div -15V 5µs/div FAULT-FREE RAIL-TO-RAIL SIGNAL HANDLING WITH ±15V SUPPLIES
+25V +16V +15V -25V OUT_ OUT_ 5V/div +15V -15V +15V 5V/div
-15V
5µs/div ±25V OVERVOLTAGE INPUT WITH OUTPUT CLAMPED ±15V
5µs/div
Fault-Protected, High-Voltage Signal-Line Protectors
Description
MAX4506 8-Pin DIP/SO MAX4507 18-Pin DIP/SO 10-14 20-Pin SSOP 11-15 IN1, IN2, IN4, IN5, IN6, IN7, VOUT8, OUT7, OUT6, OUT5, OUT4 OUT3, OUT2, OUT1 N.C. Signal Inputs Signal Inputs Negative Supply Voltage Input Signal Outputs Signal Outputs Positive Supply-Voltage Input Connection. internally connected. NAME* FUNCTION
MAX4506/MAX4507
Connect unused inputs hard voltage within supply range (e.g., GND).
Detailed Description
MAX4506/MAX4507 protect other from overvoltage clamping output voltage supply rails. power supplies device off, device clamps output MAX4506/ MAX4507 provide protection input signals ±36V with power supplies ±40V with power supplies off. MAX4506/MAX4507 protect other integrated circuits connected output from latching Latchup caused parasitic SCR(s) within turning occur when supply voltage applied exceeds specified operating range. Latchup also occur when signal voltage applied before power-supply voltage. When latchup state, circuit draws excessive current continue draw excessive current even after overvoltage condition removed. continuous latchup condition damage device permanently. Such "faults" commonly encountered modular control systems where power supplies interconnected modules interrupted reestablished random. Faults happen during production testing, maintenance, startup, power failure. Figure shows normal complementary pair found many common analog switches. addition these transistors, MAX4506/MAX4507 also contain comparators sensing clamping circuitry control state During normal opera-
-15V
COMPARATOR
-15V
SENSE SWITCH
N-CHANNEL DRIVER
-V(-15V)
CLAMP CLAMP
SENSE SWITCH +15V
+V(+15V) P-CHANNEL DRIVER
+15V
COMPARATOR
Figure Simplified Internal Structure
tion, remain with typical on-resistance between OUT. on-board comparators sensing circuitry monitor input voltage possible overvoltage faults.
Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4507
clamp circuits limit output voltage within supply voltages. When power supplies off, input voltage applied turns both clamped
Normal Operation
When power applied, each protector acts resistor series with signal path. voltage source "input" side switch will conducted through protector output (Figure When output load resistive, draws current through protector. internal resistance typically less than 100. High-impedance loads relatively unaffected presence MAX4506/MAX4507. protector's path resistance function supply voltage signal voltage (see Typical Operating Characteristics).
MAX4506
OUT1
ROUT
Fault Protection, Power
When power (i.e., protector virtual open circuit. With ±40V applied input pin, output will
Figure Application Circuit
+15V
Fault Protection, Power
fault condition exists when voltage exceeds either supply rail. This definition valid when power off, well during states while power ramps down.
MAX4506 10µF OUT1 100k
Applications Information
Supplying Power Through External
MAX4506/MAX4507 have supply currents (<250µA), which allows supply pins driven other active circuitry instead connected directly power sources. this configuration, parts used driven fault-protected switches with used control pins. example, with Vpin grounded, output CMOS gate drive turn device off. This effectively connect disconnect three (MAX4506) eight (MAX4507) separate signal lines once. Ensure that driving source(s) does drive more negative than pin. Figure shows simple turn-on delay that takes advantage MAX4506's power consumption. networks cause gradual application power MAX4506, which turn applies input signals smoothly after amplifier stabilized.
OUT2
OUT3
10µF
100k -15V
Figure Turn-On Delay
diodes discharge capacitors rapidly when power turns off. Note that used supply power MAX4506/MAX4507 must able supply enough current maintain load voltage supply rail fault condition.
Fault-Protected, High-Voltage Signal-Line Protectors
Protectors Circuit Elements
Each protectors MAX4506/MAX4507 used switched resistor, independent functions other elements same package. example, Figure shows MAX4506 with protectors used protect input amp, third element used sequence power supply. Combining circuits Figures produces delayed action switched +15V, well smooth application signals amplifier input. Figure shows MAX4506 used front MAX338 unprotected 1-to-8 multiplexer. With supplies ±15V, VOUT MAX4506 clamps ±15V; VOUT MAX338 goes ±14V. With supplies off, VOUT goes while inputs remain ±25V.
SWITCHED +15V MAX4506 +15V
MAX4506 with MAX338 enhance voltage handling capability (Figure MAX4506 MAX338 share almost equal voltage drops this configuration. example, applying ±40V pins MAX4506 causes voltage drop about across MAX4506 MAX338, voltage drop about across MAX4506 MAX338. Similarly, there drop from MAX4506 MAX338. system's performance exceeds each individual part's specification because shared voltage drops.
MAX4506/MAX4507
Multiplexer Demultiplexer
shown Figure MAX4506 used series with output MAX4508 (1-to-8 multiplexer) multiplexer demultiplexer. MAX4508 fault-protected multiplexer whose inputs designed interface with harsh environments; however, common output fault protected connected outside signals (i.e., demultiplexer use). common output fault signals, then needs protected, MAX4506 added provide complete protection.
OUT1 100k
OUT2 +40V VOUT -14V -40V
OUT3
MAX4506
-15V
MAX338
Figure Power-Supply Sequencing
+25V -25V +15V -15V VNO1 MAX338 VOUT +15V
Figure SPDT Switch Application
-15V +15V -15V
MAX4508 +15V
MAX4506
MAX4506
Figure Protecting MAX338 with MAX4506
Figure Multiplexer Demultiplexer Application Using MAX4506 MAX4507) with MAX4508
Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4507
seen Figure signal input into MAX4506 (new common output system), outputs taken MAX4508 pins This classic demultiplexer operation. This system full protection both multiplexers' inputs outputs. Note: important voltage source 100mV less. shown Figure this voltage voltage form VOUT voltage. Using higher voltages could cause into fault condition prematurely.
High-Voltage Surge Suppression
These devices high-voltage arresters, they substitutes surge suppressors. However, MAX4506/MAX4507 fill vital systems that these forms protection (Figure Although surge suppressors extremely fast shunt elements, they have very soft current knees. Their clamp voltage must chosen well above normal signal levels, because they have excessive leakage currents analog signal approaches knee. This leakage current interfere with normal operation when signal levels impedance high. clamp voltage high, input damaged. Connecting MAX4506/MAX4507 after surge suppressor allows surge-suppressor voltage above supply voltage (but within overvoltage limits), dramatically reducing leakage effects (Figure During surge, surge suppressor clamps input voltage roughly ±10V supplies.
Measuring Path Resistance
Measuring path resistance requires special techniques, since path resistance varies dramatically with voltages relative supply voltages. Conventional ohmmeters should used following reasons: applied voltage currents usually predictable, true resistance function applied voltage, which dramatically altered ohmmeter itself. Autoranging ohmmeters particularly unreliable. Figure shows circuit that give reliable results. This circuit uses 100mV voltage source, low-voltage-drop ammeter measuring circuit, adjustable supply sweep analog voltage across entire range. ammeter must have voltage drop less than millivolt maximum test current) accurate results. Keithley model electrometer suitable ammeter circuit, appropriate ranges, built-in voltage source designed this type measurement. Find path resistance setting analog voltage, measuring current, calculating path resistance. Repeat procedure each analog supply voltage.
+10V MAX4506 100mV MAX4506 ADJUSTABLE ANALOG VOLTAGE OUT1 VOUT OUT2 VOUT3
OUT1
PATH RESISTANCE 100mv/A SURGE SUPPRESSORS -15V -10V
Figure Path-Resistance Measuring Circuit
Figure Surge-Suppression Circuit
Fault-Protected, High-Voltage Signal-Line Protectors
Ordering Information (continued)
PART MAX4507CAP MAX4507CWN MAX4507CPN MAX4507C/D MAX4507EAP MAX4507EWN MAX4507EPN MAX4507MJN TEMP RANGE +70°C +70°C +70°C +70°C -40°C +85°C -40°C +85°C -40°C +85°C -55°C +125°C PIN-PACKAGE SSOP Plastic Dice* SSOP Plastic CERDIP**
MAX4506/MAX4507
*Contact factory dice specifications. **Contact factory availability.
Chip Topographies
MAX4506
MAX4507
OUT1
OUT2 OUT1 0.112" (2.84mm) OUT2 OUT6 OUT4 OUT5 0.112" (2.84mm) OUT3
OUT3
0.071" (1.80mm) VOUT8 0.071" (1.800mm)
OUT7
TRANSISTOR COUNT: (MAX4506) (MAX4507) SUBSTRATE CONNECTED
Fault-Protected, High-Voltage Signal-Line Protectors MAX4506/MAX4507
Configurations (continued)
VIEW
OUT1 OUT2 OUT3 N.C. OUT1 N.C. OUT2
MAX4507
OUT4 OUT5 OUT6 OUT7 OUT8
MAX4507
OUT3 OUT4 OUT5 OUT6 OUT7 OUT8
SO/DIP SSOP
Package Information
(The package drawing(s) this data sheet reflect most current specifications. latest package outline information, www.maxim-ic.com/packages.)
SSOP.EPS
INCHES 0.068 0.002 0.010 0.078 0.008 0.015
MILLIMETERS 1.73 0.05 0.25 1.99 0.21 0.38 INCHES 0.239 0.239 0.278 0.317 0.397 0.249 0.249 0.289 0.328 0.407 MILLIMETERS 6.07 6.07 7.07 8.07 10.07 6.33 6.33 7.33 8.33 10.33
0.20 0.09 0.004 0.008 VARIATIONS 0.205 0.301 0.025 0.212 0.311 0.037 5.20 7.65 0.63 5.38 7.90 0.95 0.0256 0.65
NOTES: INCLUDE MOLD FLASH. MOLD FLASH PROTRUSIONS EXCEED (.006"). CONTROLLING DIMENSION: MILLIMETERS. MEETS JEDEC MO150. LEADS COPLANAR WITHIN 0.10
PROPRIETARY INFORMATION TITLE:
PACKAGE OUTLINE, SSOP,
APPROVAL DOCUMENT CONTROL REV.
21-0056
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
_Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600 2003 Maxim Integrated Products Printed registered trademark Maxim Integrated Products.
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