{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC491CS#TRPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC491CSTRPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC491CSTRPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC491CS%23TRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Linear Technology LTC491CS#TRPBF, RS422/RS485 Transceiver, Full Duplex, 1/1 Drivers/Receivers, 4.75V–5.25V Supply, 70 mV Hysteresis, 0°C–70°C, Surface Mount 14-SOIC Package.","salesMarkdown":"## Supply and temperature — fit for 5 V-only, indoor designs The 4.75 V to 5.25 V supply means this part is strictly a 5 V bus transceiver. The 0°C to 70°C commercial grade covers office, lab, and light-industrial enclosures but is not rated for outdoor, under-hood, or unheated plant-floor environments. If your BOM calls for industrial temperature, the ADM485 family offers -40°C to 85°C coverage, though those are half-duplex parts. ## Packaging note — Tape & Reel vs tube The #TRPBF suffix designates Tape & Reel (TR) packaging, the standard for pick-and-place assembly. The same die is also available as LTC491CS#PBF in tube form for hand-assembly or low-volume builds.","metaTitle":"LTC491CS#TRPBF RS422/RS485 Transceiver, Full Duplex, 14-SOIC","metaDescription":"Linear Technology LTC491CS#TRPBF full-duplex RS422/RS485 transceiver, 1/1 driver/receiver, 4.75V–5.25V supply, 70 mV hysteresis, 0°C–70°C, 14-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"RS422, RS485","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Receiver Hysteresis":"70 mV","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"14-SO","Number of Drivers/Receivers":"1/1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.07","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.07000","currency":"USD"},{"qty":10,"price":"$9.09900","currency":"USD"},{"qty":25,"price":"$8.67520","currency":"USD"},{"qty":100,"price":"$7.53280","currency":"USD"},{"qty":250,"price":"$7.19424","currency":"USD"},{"qty":500,"price":"$6.55944","currency":"USD"},{"qty":1000,"price":"$5.71306","currency":"USD"},{"qty":2500,"price":"$5.50147","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/491fa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between LTC491CS#TRPBF and LTC491CS#PBF?","answer":"The only difference is packaging: LTC491CS#TRPBF ships in Tape & Reel (TR) for automated assembly, while LTC491CS#PBF ships in tube form. The electrical specifications and temperature grade are identical."},{"question":"Can LTC491CS#TRPBF replace LTC490?","answer":"The LTC490 is a full-duplex RS422/RS485 transceiver with similar pinout and function. LTC491CS#TRPBF is a direct functional replacement, but verify the receiver hysteresis (70 mV on this part) and supply range against your specific LTC490 variant's datasheet before committing the BOM."},{"question":"When sourcing LTC491CS#TRPBF, what's the closest functional second-source?","answer":"The ADM488ABRZ is a full-duplex RS422/RS485 transceiver in a 14-SOIC package with similar supply voltage and receiver hysteresis. Note that ADM488ABRZ is rated for -40°C to 85°C and ships in tube packaging, so verify temperature grade and packaging fit for your application."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC491CSTRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC491CSTRPBF 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}}