{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ADM8321WAY30ARJZR7","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"ADM8321WAY30ARJZR7","canonicalUrl":"https://icboms.com/analog-devices/ADM8321WAY30ARJZR7","factsUrl":"https://icboms.com/api/mcp/products/ADM8321WAY30ARJZR7","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices ADM8321WAY30ARJZR7 automotive-grade watchdog circuit, single-channel supervisor, 3V threshold, active-high/active-low reset, open-drain/push-pull output, SOT-23-5 package, tape and reel.","salesMarkdown":"The ADM8321WAY30ARJZR7 is a single-channel watchdog supervisor IC from the Analog Devices Automotive series, monitoring a single 3V supply rail. It combines a precision voltage monitor with a watchdog timer that expects a periodic toggle on the WDI input — if the microprocessor stops servicing the watchdog within the timeout window, the reset output asserts. The reset output is configurable as either active-high or active-low, and the output driver can be set to open-drain or push-pull. This flexibility means the same part works with both active-low reset microcontrollers and active-high enable inputs on power sequencers, without an external inverter. The 1 ms minimum reset timeout is short enough to avoid delaying system startup, but long enough to let the supply rail settle before the processor comes out of reset. For a 3V rail powering a Cortex-M core, the 1 ms window covers the bulk-capacitor charging transient. ## Temperature grade and package — deployment context An engine-control module or transmission ECU that sees 105°C underhood still has 20°C of margin before the die hits the absolute-max junction temperature. Housed in a 5-lead SOT-23 (SC-74A, SOT-753), the package footprint is 2.9 mm × 1.6 mm with a 0.95 mm pin pitch. The small outline means it fits on the cramped backside of a PCB near the processor, but the narrow pitch demands a solder mask between the pads to prevent bridging during reflow. The automotive series designation signals that this part was qualified to the extended reliability and temperature requirements of the automotive supply chain — not just a commercial-grade part that happens to work at 125°C. ## Lifecycle and compliance — active production, RoHS3 Supplied in tape-and-reel packaging, the part is ready for high-volume pick-and-place assembly. The reel quantity is typically 3000 pieces for SOT-23-5, though cut-tape options are available for prototype builds.","metaTitle":"ADM8321WAY30ARJZR7 Automotive Watchdog Circuit, 3V Threshold","metaDescription":"Active-production automotive watchdog supervisor IC. Monitors a single 3V rail with active-high/active-low reset, open-drain/push-pull output.","metaKeywords":null},"attributes":{"series":"Automotive","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Type":"Watchdog Circuit","Reset":"Active High/Active Low","Output":"Open Drain, Push-Pull","Series":"Automotive","Package":"Tape & Reel (TR); Cut Tape (CT)","Mounting Type":"Surface Mount","Reset Timeout":"1ms Minimum","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Voltage - Threshold":"3V","Operating Temperature":"-40°C ~ 125°C (TA)","Supplier Device Package":"SOT-23-5","Number of Voltages Monitored":"1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.04","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.04000","currency":"USD"},{"qty":3000,"price":"$1.29000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/5b5aafb317b54329bbd37e3100d5727b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the reset polarity and output type on this watchdog?","answer":"The ADM8321WAY30ARJZR7 supports both active-high and active-low reset configurations, and the output driver can be set to either open-drain or push-pull. This lets it interface with any standard microcontroller reset input without external level translation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/ADM8321WAY30ARJZR7","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/ADM8321WAY30ARJZR7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}