{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UA9638CD","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UA9638CD","canonicalUrl":"https://icboms.com/texas-instruments/UA9638CD","factsUrl":"https://icboms.com/api/mcp/products/UA9638CD","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UA9638CD, Type Driver, Protocol RS422/RS485, 2/0 Drivers/Receivers, 4.75V~5.25V Supply, 0°C~70°C, 8-SOIC Package.","salesMarkdown":"## What this dual RS422/RS485 line driver is for It provides two differential outputs with no integrated receiver — this is a pure driver, not a transceiver. Typical applications include industrial control backplanes, point-to-point data links, and differential signalling over twisted-pair cables where the receiver is handled by a separate part like the UA9637 or SN75175. That rules out 3.3 V-only buses — if your system runs on a 3.3 V supply, this driver needs a separate 5 V rail or a level shifter. UA9638CDR) would be needed. ## Package and mounting — board-level fit No exposed thermal pad — dissipation is through the leads and board copper, adequate for this driver's typical output current.","metaTitle":"UA9638CD RS422/RS485 Driver, 2/0, 8-SOIC, 0-70°C","metaDescription":"Texas Instruments UA9638CD dual RS422/RS485 line driver in SOIC-8. 4.75V-5.25V supply, 0°C-70°C. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Driver","Package":"Tube","Protocol":"RS422, RS485","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.75V ~ 5.25V","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"8-SOIC","Number of Drivers/Receivers":"2/0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.62","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.62000","currency":"USD"},{"qty":10,"price":"$1.44800","currency":"USD"},{"qty":25,"price":"$1.37400","currency":"USD"},{"qty":100,"price":"$1.12880","currency":"USD"},{"qty":250,"price":"$1.05516","currency":"USD"},{"qty":500,"price":"$0.93248","currency":"USD"},{"qty":1000,"price":"$0.73617","currency":"USD"},{"qty":2500,"price":"$0.69450","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/fc11a9fee7335732dd6f0e57668d6843.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between UA9638CD and SN75176?","answer":"The UA9638CD is a dual driver (2/0) with no receiver, while the SN75176 is a single transceiver (1/1) combining one driver and one receiver in the same package. The UA9638CD is used when you need two differential outputs from one IC; the SN75176 handles bidirectional communication on a single pair."},{"question":"Is UA9638CD compatible with RS485?","answer":"Yes, the UA9638CD is specified for both RS422 and RS485 protocols. It drives differential signals on RS485 buses, but because it contains no receiver, the bus termination and fail-safe biasing must be handled externally."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UA9638CD","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UA9638CD 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}}