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MAX708

UP Supervisory Circuits

TheMAX707/708arecost?effectivesystemsupervisorcircuitsdesignedtomonitorVCCindigitalsystemsandprovidearesetsignaltothehostprocessorwhennecessary.Noexternalcomponentsarerequired. Theresetoutputisdrivenactivewithin20secofVCCfallingthroughtheresetvoltageth

MAX708

Low-Cost, uP Supervisory Circuits

GeneralDescription TheMAX705–MAX708/MAX813Lmicroprocessor(μP)supervisorycircuitsreducethecomplexityandnumberofcomponentsrequiredtomonitorpower-supplyandbatteryfunctionsinμPsystems.ThesedevicessignifcantlyimprovesystemreliabilityandaccuracycomparedtoseparateICso

MAX708

MicroPower Voltage Supervisor; ? Precision Supply-Voltage MonitorMAX707: 4.63 V Reset Threshold VoltageMAX708: Standard Reset Threshold Voltages (Typical): 4.38 V, 3.08 V, 2.93 V, 2.63 V\n? Reset Threshold Available from 1.6 V to 4.9 V with 100 mV Increments (Factory Option)\n? 200 mS (Typ) Reset Timeout Delay\n? 12 μA (Vcc = 3.3 V) Quiescent Current\n? Active_High and Active_Low Reset Output\n? Guaranteed RESET_L and RESET Output Valid to Vcc = 1.0 V\n? Voltage Monitor for Power-Fail or Low-Battery Warning\n? 8 Pin SO or Micro8 Package\n? Pb-Free Packages are Available\n;

The MAX707/708 are cost-effective system supervisor circuits designed to monitor Vcc in digital systems and provide a reset signal to the host processor when necessary. No external components are required. The reset output is driven active within 20 ? sec of Vcc falling through the reset voltage threshold. Reset is maintained with 200 mS of delay time after Vcc rise above the reset threshold. The MAX707/708 have a low quiescent current of 12 ?A at Vcc = 3.3 V, an active-high RESET and active-low RESET with a push-pull output. The output is guaranteed valid down to Vcc = 1.0 V. The MAX707/708 have a Manual Reset MR input and a +1.25 V threshold detector for power-fail input PFI. These devices are available in a Micro8 and SOIC-8 package.

MAX708

低成本、微處理器監(jiān)控電路; ? 監(jiān)控功能集成顯著提高了系統(tǒng)可靠性，同時縮小了電路板空間\n? μMAX封裝\n\n? VCC = 1V時確保低電平有效RESET有效\n? 復位脈沖寬度：200ms\n\n? 去抖TTL/CMOS兼容手動復位輸入\n\n? 高電平有效復位輸出(MAX707/MAX708/MAX813L)\n\n\n\n\n? 精密電源電壓監(jiān)控器\n? 4.65V (MAX705/MAX707/MAX813L)\n\n? 4.40V (MAX706/MAX708)\n\n\n\n\n? 電壓監(jiān)控器，監(jiān)控有無電源故障或低電池電量警告;

MAX705–MAX708/MAX813L微處理器(μP)監(jiān)控電路減少了監(jiān)控μP系統(tǒng)中的電源和電池功能所需的復雜性和元件數量。與單獨的IC或分立元件相比，這些器件顯著提高了系統(tǒng)的可靠性和準確性。\n\n MAX705/MAX706/MAX813L提供四種功能： \n\n啟動、關斷和掉電情況下的復位輸出。如果看門狗輸入在1.6秒內未切換，則獨立看門狗輸出會變?yōu)榈碗娖健?.25V閾值檢測器，用于電源故障警告、低電池電量檢測或+5V以外電源的監(jiān)控。一個低電平有效手動復位輸入。 MAX707/MAX708將看門狗定時器替換為高電平有效復位，除此之外與MAX705/MAX706相同。MAX813L提供RESET而不是低電平有效RESET，除此之外與MAX705相同。 \n\n 提供兩個電源電壓監(jiān)控電平：MAX705/MAX707/MAX813L在電源電壓降至4.65V以下時產生復位脈沖，而MAX706/MAX708在電源電壓降至4.40V以下時產生復位脈沖。所有四個器件均采用8引腳DIP、SO和μMAX?封裝。\n\n ?\n\n

MAX708

Low-Cost, μP Supervisory Circuits

MAX708C/D

Low-Cost, uP Supervisory Circuits

GeneralDescription TheMAX705–MAX708/MAX813Lmicroprocessor(μP)supervisorycircuitsreducethecomplexityandnumberofcomponentsrequiredtomonitorpower-supplyandbatteryfunctionsinμPsystems.ThesedevicessignifcantlyimprovesystemreliabilityandaccuracycomparedtoseparateICso

MAX708CPA

Low-Cost, uP Supervisory Circuits

GeneralDescription TheMAX705–MAX708/MAX813Lmicroprocessor(μP)supervisorycircuitsreducethecomplexityandnumberofcomponentsrequiredtomonitorpower-supplyandbatteryfunctionsinμPsystems.ThesedevicessignifcantlyimprovesystemreliabilityandaccuracycomparedtoseparateICso

MAX708CSA

Low-Cost, uP Supervisory Circuits

GeneralDescription TheMAX705–MAX708/MAX813Lmicroprocessor(μP)supervisorycircuitsreducethecomplexityandnumberofcomponentsrequiredtomonitorpower-supplyandbatteryfunctionsinμPsystems.ThesedevicessignifcantlyimprovesystemreliabilityandaccuracycomparedtoseparateICso

MAX708CSLASHD

Low-Cost, uP Supervisory Circuits

GeneralDescription TheMAX705–MAX708/MAX813Lmicroprocessor(μP)supervisorycircuitsreducethecomplexityandnumberofcomponentsrequiredtomonitorpower-supplyandbatteryfunctionsinμPsystems.ThesedevicessignifcantlyimprovesystemreliabilityandaccuracycomparedtoseparateICso

MAX708CUA

Low-Cost, uP Supervisory Circuits

GeneralDescription TheMAX705–MAX708/MAX813Lmicroprocessor(μP)supervisorycircuitsreducethecomplexityandnumberofcomponentsrequiredtomonitorpower-supplyandbatteryfunctionsinμPsystems.ThesedevicessignifcantlyimprovesystemreliabilityandaccuracycomparedtoseparateICso