Features: ` Small 8-Pin SOT23 Package
` Precision Monitoring of +5.0V, +3.3V, +3.0V, +2.5VSupply Voltages
` 140ms Reset Timeout Delay
` Power-Fail Input with Independent Output; onitor Inputs Down to 0.62V (MAX6704MAX6708)
` Dual Adjustable Reset Input for Triple-Voltage onitoring (MAX6701(A)/MAX6702(A)/MAX6703(A))
` 1.6s Watchdog Timeout Period(MAX6701(A)MAX6707(A))
` Independent Watchdog Output MAX6701(A)/MAX6702(A)/MAX6703(A)/MAX6705(A)/MAX6706(A)/MAX6707(A))
` Manual Reset Input
` Four Reset Output Stage Options ctive Low Push-Pull (MAX6701(A), MAX6705(A)) ctive Low Open Drain (MAX6703(A), MAX6707(A)) ctive High Push-Pull (MAX6702(A), MAX6706(A)) ual Active Low/High Push-Pull (MAX6704,MAX6708)
` Guaranteed Reset Valid to VCC = 1V
` Immune to Short Falling VCC Transients
` Low Cost, Few External ComponentsApplication`Computers
`Controllers
`Intelligent Instruments
`Automotive Systems
`Critical P Power Monitoring
`White Goods
`Networking
`TelecommunicationsPinout
SpecificationsVCC.....................................................................-0.3V to +6.0V
Open-Drain RESET, WDO, PFO ...........................-0.3V to +6.0V
Push-Pull RESET, RESET, WDO, PFO..........-0.3V to (VCC + 0.3V)
MR, WDI, PFI, RST_IN1, RST_IN2 .............-0.3V to (VCC + 0.3V)
Input Current (VCC) .........................................................20mA
Output Current (RESET, RESET, PFO, WDO) .....................20mA
Continuous Power Dissipation (TA = +70)
8-Pin SOT23 (derate 8.9mW/ above +70)................714mW
Operating Temperature Range .........................-40 to +125
Junction Temperature......................................................+150
Storage Temperature Range .............................-65 to +150
Lead Temperature (soldering, 10s) .................................+300
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional peration of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to bsolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe MAX670507A microprocessor (P) supervisory ircuits reduce the complexity and components required o monitor power-supply functions in P systems. These MAX670507A significantly improve system reliability and accuracy ompared to separate ICs or discrete components.
The MAX670507A provides four functions: reset output during power-up, power-down, and rownout conditions; an independent watchdog output hat goes low if the watchdog input has not been toggled ithin 1.6s; a 0.62V threshold detector for power-fail arning; and an active-low manual reset input.
The MAX670507A offers several pinout ptions to accommodate a variety of multivoltage microprocessor upervision applications.
The MAX6701(A)/MAX6702(A)/MAX6703(A) monitor hree supply voltages (one fixed threshold and two djustable) to drive a single reset output and include a anual reset input and a watchdog timer with an independent utput. The MAX6704 monitors a single-supply oltage to drive complementary reset outputs and ncludes an independent adjustable power-fail-in/powerfail- ut comparator, a manual reset input, and a resetbased atchdog timer. The MAX670507A monitor a single-supply voltage to drive a ingle reset output and include an independent djustable power-fail-in/power-fail-out comparator, a anual reset input, and a watchdog timer with an independent utput. The MAX6708 is the same as the AX6704 but without the watchdog timer function.
See the Detailed Description for differences between on-A and A versions.
MAX670507A Data Sheet
