{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM385MX","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM385MX","canonicalUrl":"https://icboms.com/texas-instruments/LM385MX","factsUrl":"https://icboms.com/api/mcp/products/LM385MX","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM385MX adjustable shunt voltage reference, 8-SOIC surface mount, output 1.24V to 5.3V, ±2% tolerance, 30ppm/°C temperature coefficient, 20 mA output, 55 µA cathode current.","salesMarkdown":"## Adjustable output — 1.24 V to 5.3 V The LM385MX: This is a shunt-type voltage reference with an adjustable output from 1.24 V minimum up to 5.3 V maximum, set by two external resistors. ## 20 mA output, 55 µA cathode current The LM385MX can source or sink up to 20 mA, which is enough to bias an ADC reference input or a comparator threshold divider. The minimum cathode current is 55 µA — keep the bias resistor sized so the total current through the shunt stays above that floor or the output voltage drifts out of regulation. The 50 µVrms noise (10 Hz to 10 kHz) is low enough for 12-bit systems without an external filter cap. ## 8-SOIC — field-swap note Housed in an 8-SOIC (0.154″ wide, 3.90 mm body), the LM385MX is a surface-mount part you can swap with a standard hot-air station or a fine-tipped iron if the board has enough pad access. No exposed pad, no thermal vias — just eight leads. The pinout is the same as the industry-standard LM385 in SOIC-8, so a rework tech can pull the old part and solder this one without checking a footprint drawing.","metaTitle":"LM385MX Shunt Voltage Reference, 1.24V–5.3V Adjustable, NRND","metaDescription":"LM385MX adjustable shunt voltage reference in 8-SOIC. Output 1.24V to 5.3V, ±2% tolerance, 30ppm/°C drift, 20 mA output.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Tolerance":"±2%","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Not For New Designs","Reference Type":"Shunt","Voltage - Input":"-","lifecycle_stage":"eol_hot","Current - Output":"20 mA","Current - Supply":"-","Current - Cathode":"55 µA","Base Product Number":"LM385","Noise - 0.1Hz to 10Hz":"-","Noise - 10Hz to 10kHz":"50µVrms","Operating Temperature":"0°C~70°C(TA)","Voltage - Output (Max)":"5.3 V","Supplier Device Package":"8-SOIC","Temperature Coefficient":"30ppm/°C","Voltage - Output (Min/Fixed)":"1.24V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5070","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/4199e8d59659e82b20c871ef2cbe4629.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM385MX/alternatives.json"},"ai":{"faq":[{"question":"Is LM385MX obsolete or NRND?","answer":"It is still available for existing production runs, but new designs should look for an alternative before the manufacturer closes the line."},{"question":"What is the difference between LM385MX and LM385M?","answer":"Both are the same adjustable shunt reference in an 8-SOIC package. The LM385MX is the Tape & Reel (TR) shipping variant; the LM385M typically ships in tubes or bulk. Electrically they are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM385MX","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM385MX when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}