{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ASEM1-1.8432MHZ-LC-T","brand":"Abracon LLC","brandSlug":"abracon-llc","productSlug":"ASEM1-1.8432MHZ-LC-T","canonicalUrl":"https://icboms.com/abracon-llc/ASEM1-1.8432MHZ-LC-T","factsUrl":"https://icboms.com/api/mcp/products/ASEM1-1.8432MHZ-LC-T","rawCanonicalId":null},"summary":{"shortDescription":"Abracon LLC ASEM1-1.8432MHZ-LC-T, MEMS XO oscillator, 1.8432 MHz, CMOS output, 3.3 V supply, ±50ppm, -40°C to 85°C, 4-SMD package, standby function.","salesMarkdown":"## Why 1.8432 MHz matters for UART timing The ASEM1-1.8432MHZ-LC-T: The 1.8432 MHz output is the canonical baud-clock crystal for 115200 bit/s UART operation — it divides evenly to 115200 via a /16 divisor, giving a clean 7.3728 MHz master clock halved once. CMOS push-pull output stage drives the fan-out to one or two receiver inputs without external termination; the logic-high level tracks the 3.3 V rail, so level compatibility with 3.3 V MCUs and SoCs is inherent — no translator required. ## MEMS resonator advantage and the standby function The MEMS-based resonator inside the ASEM series eliminates the cold-start tolerance drift that affects traditional crystal XO units. Mechanical resilience also makes the part more tolerant of board flex and hand-assembly rework without frequency shift — a meaningful advantage in portable or mechanically stressed enclosures. When the host MCU drives the standby pin low, the oscillator draws a maximum of 1 µA, compared to 15 mA during active operation. For battery-powered nodes that sleep between transmissions, the standby current draw determines shelf life — 1 µA sits below the self-discharge floor of most coin-cell chemistries, so the oscillator ceases to be a meaningful load when the system is off. ## Temperature grade and frequency stability The ±50 ppm frequency stability specification bounds long-term drift including initial accuracy, temperature over range, and aging for the first year — sufficient for UART timing without requiring software calibration of the baud-rate generator. Package height is 0.90 mm seated maximum, which clears the 0.80 mm board-level clearance requirement in portable device layouts and sits below the typical 1.00 mm connector standoff on mezzanine boards.","metaTitle":"Abracon ASEM1-1.8432MHZ-LC-T XO Oscillator, 1.8432 MHz, CMOS","metaDescription":"Abracon ASEM1-1.8432MHZ-LC-T XO oscillator, 1.8432 MHz CMOS output, 3.3 V, MEMS resonator, ±50ppm, -40°C to 85°C. Active. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Crystals & Oscillators"],"specifications":{"Mfr":"Abracon LLC","Type":"XO (Standard)","Output":"CMOS","Series":"ASEM, Pure Silicon™","Package":"Tape & Reel (TR); Cut Tape (CT)","Ratings":"-","Function":"Standby (Power Down)","Frequency":"1.8432 MHz","Mounting Type":"Surface Mount","Base Resonator":"MEMS","Package / Case":"4-SMD, No Lead","Product Status":"Active","lifecycle_stage":"unknown","Size / Dimension":"0.126\\\" L x 0.098\\\" W (3.20mm x 2.50mm)","Voltage - Supply":"3.3V","Frequency Stability":"±50ppm","Height - Seated (Max)":"0.035\\\" (0.90mm)","Operating Temperature":"-40°C~85°C","Current - Supply (Max)":"15mA","Absolute Pull Range (APR)":"-","Current - Supply (Disable) (Max)":"1µA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/53f2faa9eb96cff31b28e757c417b10e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/ASEM1-1.8432MHZ-LC-T/alternatives.json"},"ai":{"faq":[{"question":"What does the ASEM1-1.8432MHZ-LC-T's standby (power-down) function mean for my design?","answer":"The standby pin allows the host MCU to gate the clock output without removing power from the oscillator. Drawing 1 µA maximum in this state versus 15 mA active makes the part suitable for duty-cycled sensor nodes and UART links that sleep between poll cycles. The output goes into high-Z during standby, so the downstream receiver input must tolerate a floating line or require an external pull."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/abracon-llc/ASEM1-1.8432MHZ-LC-T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/abracon-llc/ASEM1-1.8432MHZ-LC-T 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}}