{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX691AEWE+T","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX691AEWET","canonicalUrl":"https://icboms.com/analog-devices/MAX691AEWET","factsUrl":"https://icboms.com/api/mcp/products/MAX691AEWE%2BT","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX691AEWE+T Battery Backup Circuit, 1-Channel Supervisor, Active High/Active Low Reset, Push-Pull Output, 4.65V Threshold, 140ms Timeout, 16-SOIC, Tape & Reel.","salesMarkdown":"## Supervisor with battery-backup switchover The MAX691AEWE+T is a 1-channel voltage supervisor from Maxim Integrated that integrates a battery-backup circuit — it monitors the primary supply rail and, on a brownout or power loss, switches the load to a backup battery while asserting a reset signal to the processor. The reset output is available in both active-high and active-low polarities, with a push-pull stage that drives the reset line without requiring an external pull-up resistor. ## Threshold, timeout, and temperature range The voltage threshold is set at 4.65 V, typical for monitoring a 5 V supply rail — when VCC drops below this level, the reset output asserts and the battery-backup switch engages. Reset timeout is 140 ms minimum, giving the supply rail time to recover before the processor is released from reset; this prevents spurious toggling on a glitchy power bus.","metaTitle":"MAX691AEWE+T Battery Backup Circuit, 4.65V Threshold","metaDescription":"MAX691AEWE+T supervisor IC, active high/low reset, 140ms timeout, -40°C to +85°C, 16-SOIC. Active production, ROHS3 compliant. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Type":"Battery Backup Circuit","Reset":"Active High/Active Low","Output":"Push-Pull, Push-Pull","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"140ms Minimum","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Voltage - Threshold":"4.65V","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"16-SOIC","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$11.51","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$11.51000","currency":"USD"},{"qty":10,"price":"$10.40100","currency":"USD"},{"qty":25,"price":"$9.91760","currency":"USD"},{"qty":100,"price":"$8.61150","currency":"USD"},{"qty":250,"price":"$8.22444","currency":"USD"},{"qty":500,"price":"$7.49874","currency":"USD"},{"qty":1000,"price":"$6.53116","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the reset timeout for MAX691AEWE+T?","answer":"The reset timeout is 140 ms minimum, ensuring the supply rail has time to stabilise before the processor is released from reset."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX691AEWET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX691AEWET when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}