{"id":7494,"date":"2026-06-25T07:31:24","date_gmt":"2026-06-25T07:31:24","guid":{"rendered":"https:\/\/materialparts.com\/mic2774n-31ym5-tr\/"},"modified":"2026-06-25T07:31:24","modified_gmt":"2026-06-25T07:31:24","slug":"mic2774n-31ym5-tr","status":"publish","type":"post","link":"https:\/\/materialparts.com\/zh\/mic2774n-31ym5-tr\/","title":{"rendered":"MIC2774N-31YM5 TR"},"content":{"rendered":"

\u4ea7\u54c1\u6982\u89c8<\/h2>\n

The MIC2774N-31YM5 TR from Microchip Technology is a dual micro-power voltage supervisor with 3.09V fixed threshold and 0.3V adjustable threshold in SOT-23-5 package. Generating 140ms minimum reset pulse with 3.5uA supply current, it monitors two independent power rails with manual reset capability.<\/p>\n

\u4e3b\u8981\u89c4\u683c<\/h2>\n\n\n\n\n\n\n\n\n\n\n
Fixed Threshold<\/td>\n3.09 V<\/td>\n<\/tr>\n
Adjustable Threshold<\/td>\n0.3 V reference<\/td>\n<\/tr>\n
Reset Timeout<\/td>\n140 ms min<\/td>\n<\/tr>\n
Supply Current<\/td>\n3.5 uA typical<\/td>\n<\/tr>\n
\u7535\u6e90\u7535\u538b<\/td>\n1.5 V to 5.5 V<\/td>\n<\/tr>\n
Reset Output<\/td>\nActive-low, open-drain<\/td>\n<\/tr>\n
Manual Reset<\/td>\nYes (\/MR input)<\/td>\n<\/tr>\n
\u5305\u88c5<\/td>\nSOT-23-5<\/td>\n<\/tr>\n
\u5de5\u4f5c\u6e29\u5ea6<\/td>\n-40 to +85 C<\/td>\n<\/tr>\n<\/table>\n

\u7279\u70b9<\/h2>\n
    \n
  • Monitors two independent power supplies simultaneously<\/li>\n
  • 3.09V fixed threshold for 3.3V rail monitoring<\/li>\n
  • 0.3V adjustable reference for low-voltage rail monitoring<\/li>\n
  • 140ms minimum reset timeout for stable system recovery<\/li>\n
  • Manual reset input for external reset control<\/li>\n
  • Ultra-low 3.5uA supply current extends battery life<\/li>\n<\/ul>\n

    \u5e94\u7528<\/h2>\n
      \n
    • Processor\/FPGA core and I\/O voltage monitoring<\/li>\n
    • PDAs and handheld devices dual-rail supervision<\/li>\n
    • Embedded controllers power-on reset generation<\/li>\n
    • Telecommunications system voltage supervision<\/li>\n
    • Wireless and cellular systems power management<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      Product Overview The MIC2774N-31YM5 TR from Microchip Technology is a dual micro-power voltage supervisor with 3.09V fixed threshold and 0.3V adjustable threshold in SOT-23-5 package. Generating 140ms minimum reset pulse with 3.5uA supply current, it monitors two independent power rails with manual reset capability. Key Specifications Fixed Threshold 3.09 V Adjustable Threshold 0.3 V reference […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[13,29],"tags":[],"chip_brand":[134],"class_list":["post-7494","post","type-post","status-publish","format-standard","hentry","category-integrated-circuits-ics","category-power-management-ics-pmic","chip_brand-microchip"],"acf":{"brief_explanation":"Dual voltage supervisor, 3.09V fixed + 0.3V adj, 140ms reset, SOT-23-5","date_code":"","package_case":"SOT-23-5 (2.9 x 1.6 x 1.45 mm)","in_stock":4321,"datasheet":"https:\/\/www.microchip.com\/en-us\/product\/MIC2774","price":"$0.725 @ 3ku","product_introduction":"The MIC2774N-31YM5 TR from Microchip Technology (formerly Micrel) is a dual micro-power voltage supervisor designed to monitor two independent power supply rails for undervoltage conditions. The N variant features an active-low open-drain reset output, with a fixed 3.09V threshold (ideal for 3.3V rails with 5% tolerance) and an adjustable input with a 0.3V reference (enabling monitoring of voltages as low as 0.3V). The device generates a minimum 140ms power-on reset pulse and includes a manual reset input. With only 3.5uA typical supply current, it is ideal for battery-powered applications. The YM5 suffix denotes SOT-23-5 package and TR indicates tape and reel packaging.","working_principle":"The MIC2774N-31YM5 TR operates as a dual power supply supervisor. (1) The fixed threshold comparator monitors the VDD pin against the factory-set 3.09V threshold with built-in hysteresis to prevent chattering on slow-rising supplies. When VDD drops below the threshold, the reset output is asserted. (2) The adjustable comparator compares the voltage at the ADJ pin against a precision 0.3V internal reference. An external resistor divider sets the desired threshold voltage, allowing monitoring of any rail down to 0.3V. (3) The 140ms minimum reset timeout is generated by an internal oscillator and counter, ensuring the processor has sufficient time to stabilize after power returns above the threshold. The manual reset input (\/MR) allows an external switch or logic signal to assert reset independently of the voltage thresholds.","pin_description":"
      Pin<\/th>Name<\/th>Function<\/th><\/tr>
      1<\/td>\/RST<\/td>Active-low open-drain reset output<\/td><\/tr>
      2<\/td>GND<\/td>Ground<\/td><\/tr>
      3<\/td>\/MR<\/td>Manual reset input (active low)<\/td><\/tr>
      4<\/td>ADJ<\/td>Adjustable threshold input<\/td><\/tr>
      5<\/td>VDD<\/td>Supply and fixed threshold input<\/td><\/tr><\/table>","application_scenarios":"
      • Monitoring processor ASIC or FPGA core (adjustable) and I\/O (3.09V) voltages<\/li>
      • PDAs and handheld PCs dual-rail power supervision with manual reset<\/li>
      • Embedded controllers with 3.3V logic and low-voltage core monitoring<\/li>
      • Telecommunications system voltage supervision with undervoltage detection<\/li>
      • Wireless and cellular systems battery and rail voltage monitoring<\/li><\/ul>","alternative_models":"
        Model<\/th>Manufacturer<\/th>Key Difference<\/th><\/tr>
        MIC2774H-31YM5-TR<\/td>Microchip<\/td>Active-high reset output<\/td><\/tr>
        MIC2774N-46YM5-TR<\/td>Microchip<\/td>4.63V fixed threshold (5V rail)<\/td><\/tr>
        MAX6306UKD2-T<\/td>Maxim<\/td>Dual supervisor, SOT-23-6<\/td><\/tr>
        TPS3839K33DBVR<\/td>TI<\/td>Single supervisor, 150nA IQ<\/td><\/tr>
        MCP130T-300I\/TT<\/td>Microchip<\/td>Single 3.0V supervisor, SOT-23-3<\/td><\/tr><\/table>"},"_links":{"self":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/comments?post=7494"}],"version-history":[{"count":0,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/posts\/7494\/revisions"}],"wp:attachment":[{"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/media?parent=7494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/categories?post=7494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/tags?post=7494"},{"taxonomy":"chip_brand","embeddable":true,"href":"https:\/\/materialparts.com\/zh\/wp-json\/wp\/v2\/chip_brand?post=7494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}