MAX706SESA+T μP Supervisor with Manual Reset 200ms Pulse 4.65V Threshold Low 35μA Current 3.3V/5V Operation -40°C to +85°C Watchdog Timer & Power-Fail Compare
Features
µMAX Package, Small 8-Pin SO
Precision Supply-Voltage Monitors
2.63V (MAX706P/R, MAX706AP/AR, and MAX708R)
2.93V (MAX706S, MAX706AS, and MAX708S)
3.08V (MAX706T, MAX706AT, and MAX708T)
200ms Reset Time Delay
Debounced TTL/CMOS-Compatible Manual Reset Input
100µA Quiescent Current
WDI Disable Feature (MAX706AP/AR/AS/AT)
Watchdog Timer: 1.6s Timeout
Reset Output Signal:
Active-High Only (MAX706P, MAX706AP)
Active-Low Only (MAX706R/S/T, MAX706AR/AS/AT)
Active-High and Active-Low (MAX708R/S/T)
Voltage Monitor for Power-Fail or Low-Battery Warning
8-Pin Surface-Mount Package
Guaranteed RESET Assertion to VCC = 1V
Applications
Battery-Powered Equipment
Portable Instruments
Computers
Controllers
Intelligent Instruments
Critical µP Power Monitoring
Description
The MAX706P/R/S/T, MAX706AP/AR/AS/AT, and MAX708R/S/T microprocessor (µP) supervisory circuits reduce the complexity and number of components required to monitor +3V power-supply levels in +3V to +5V µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components.
The MAX706P/R/S/T and MAX706AP/AR/AS/AT supervi sory circuits provide the following four functions:
1) A reset output during power-up, power-down, and brownout conditions.
2) An independent watchdog output that goes low if the watchdog input has not been toggled within 1.6s.
3) A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power supply other than the main supply.
4) An active-low, manual-reset input.
The only difference between the MAX706R/AR, MAX706S/AS, and MAX706T/AT is the reset-threshold voltage levels, which are 2.63V, 2.93V, and 3.08V, respectively. All have active-low reset output signals. The MAX706P/AP are identical to the MAX706R/AR, except the reset output signal is active-high. The watch dog timer function for the MAX706AP/AR/AS/AT dis ables when the WDI input is left open or connected to a high-impedance state of a low-leakage tri-state output.
The MAX708R/S/T provide the same functions as the MAX706R/S/T and MAX706AR/AS/AT except they do not have a watchdog timer. Instead, they provide both RESET and RESET outputs. As with the MAX706, devices with R, S, and T suffixes have reset thresholds of 2.63V, 2.93V, and 3.08V, respectively.
These devices are available in 8-pin SO, DIP, and µMAX® packages and are fully specified over the oper ating temperature range.
INFORMATION
| Category | | |
| Manufacturer | Analog Devices Inc./Maxim Integrated | |
| Series | | |
| Packaging | Tape & Reel (TR) Cut Tape (CT) Digi-Reel® | |
| Part Status | | |
| DigiKey Programmable | | |
| Type | Simple Reset/Power-On Reset | |
| Number of Voltages Monitored | | |
| Voltage - Threshold | | |
| Output | | |
| Reset | | |
| Reset Timeout | | |
| Operating Temperature | | |
| Mounting Type | | |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | |
| Supplier Device Package | | |
| Base Product Number | |
Drawing
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Product Tags:
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MAX706SESA+T: μP Supervisor with Manual Reset, 200ms Pulse, 4.65V Threshold, Low 35μA Current, 3.3V/5V Operation, -40°C to +85°C, Watchdog Timer & Images
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