{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS8921ATM/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"DS8921ATM-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/DS8921ATM-NOPB","factsUrl":"https://icboms.com/api/mcp/products/DS8921ATM%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments DS8921ATM/NOPB, full-duplex RS-485/RS-422 transceiver, 1 driver / 1 receiver, 8-SOIC package, 4.5V to 5.5V supply, -40°C to 85°C operation.","salesMarkdown":"## Type and function — what this transceiver does The DS8921ATM/NOPB is a full-duplex transceiver supporting both RS-422 and RS-485 protocols. ## Supply voltage and 3.3V compatibility This part operates from a 4.5V to 5.5V supply rail. It is not designed for 3.3V logic — the receiver hysteresis of 70 mV is specified at 5V nominal. If your system runs on a 3.3V bus, you will need a level translator or a different transceiver rated for that supply. ## Temperature grade and environment fit The 8-SOIC package (0.154-inch body width) is a standard footprint that rework labs can handle with hot-air profiles typical for SOIC-8.","metaTitle":"DS8921ATM/NOPB RS-485/RS-422 Transceiver","metaDescription":"DS8921ATM/NOPB full-duplex RS-485/RS-422 transceiver, 1/1 driver/receiver, 8-SOIC, -40°C to 85°C, 4.5V-5.5V supply. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Sensors & Transducers"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tube","Protocol":"RS422, RS485","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Receiver Hysteresis":"70 mV","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.08","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.08000","currency":"USD"},{"qty":10,"price":"$1.86500","currency":"USD"},{"qty":25,"price":"$1.75960","currency":"USD"},{"qty":100,"price":"$1.49920","currency":"USD"},{"qty":250,"price":"$1.40768","currency":"USD"},{"qty":500,"price":"$1.23172","currency":"USD"},{"qty":1000,"price":"$1.02057","currency":"USD"},{"qty":2500,"price":"$0.99600","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cc0005f0968b03e28c2485518190b180.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between DS8921ATM/NOPB and DS8921ATMX/NOPB?","answer":"The DS8921ATM/NOPB is supplied in a tube, while the DS8921ATMX/NOPB is typically supplied on tape-and-reel. Electrically they are identical — same transceiver, same 8-SOIC package, same ratings. Choose the tube variant for prototype or low-volume builds; pick the reel variant for automated pick-and-place assembly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/DS8921ATM-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/DS8921ATM-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}