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      1. 0755-84196189
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        • 產品名稱:
          MAX708SESA+T(監視電壓、低成本微處理器)
        • 功能名稱:
          監視電壓、低成本微處
        • 概要:

          監視+3V電壓、低成本、微處理器監控電路

          概述

          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 supervisory 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 watchdog timer function for the MAX706AP/AR/AS/AT disables 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 active-low 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 operating temperature range.

          關鍵特性

          • 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 active-low RESET Assertion to VCC = 1V
           

          應用/使用

          • 電池供電設備
          • 計算機
          • 控制器
          • 精確的μP電源監控
          • 智能儀表
          • 便攜式儀表
        • 特征:

          • 監視電壓、低成本微處理器
        • 技術資料下載:
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