{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT1781CN#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT1781CNPBF","canonicalUrl":"https://icboms.com/analog-devices/LT1781CNPBF","factsUrl":"https://icboms.com/api/mcp/products/LT1781CN%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT1781CN#PBF, RS-232 Transceiver, Full Duplex, 2/2 Drivers/Receivers, 250 kBd, 4.5V–5.5V Supply, 0°C–70°C, 16-PDIP (0.300\", 7.62mm), Tube","salesMarkdown":"## RS-232 Interface IC in 16-PDIP The LT1781CN#PBF is an Analog Devices full-duplex RS-232 transceiver with two drivers and two receivers in a through-hole 16-PDIP package. It operates from a single 4.5V to 5.5V supply and supports a data rate of 250 kBd, making it suitable for legacy serial ports, industrial control panels, and test equipment that still use DB-9 or DB-25 connectors. The receiver hysteresis of 400 mV provides noise immunity on long cable runs, reducing the chance of false bit transitions in electrically noisy environments. ## Commercial Temperature Range and Through-Hole Mounting The 16-DIP (0.300\", 7.62mm) package with through-hole mounting simplifies prototyping and field replacement compared to surface-mount packages, but occupies more board area and limits placement density on high-volume boards. Among RS-232 transceivers in similar DIP packages, the ADM233LJNZ runs at 120 Kbps (roughly half the data rate) and the ADM222ANZ offers 200 Kbps with a wider -40°C to 85°C temperature range, so the LT1781CN#PBF sits in the middle on speed but is limited to commercial temperature. ## Active Production — No Obsolescence Concern It is ROHS3 compliant, so it meets the latest EU restriction on hazardous substances.","metaTitle":"LT1781CN#PBF RS-232 Transceiver, 250 kBd, 16-PDIP","metaDescription":"LT1781CN#PBF is an Analog Devices full-duplex RS-232 transceiver with 2/2 drivers/receivers, 250 kBd data rate, 400 mV hysteresis, 4.5V–5.5V supply, 0°C–70°C","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":"RS232","Data Rate":"250KBd","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"4.5V ~ 5.5V","Receiver Hysteresis":"400 mV","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"16-PDIP","Number of Drivers/Receivers":"2/2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.42","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.42000","currency":"USD"},{"qty":10,"price":"$6.70000","currency":"USD"},{"qty":25,"price":"$6.38880","currency":"USD"},{"qty":100,"price":"$5.54720","currency":"USD"},{"qty":250,"price":"$5.29788","currency":"USD"},{"qty":500,"price":"$4.83042","currency":"USD"},{"qty":1000,"price":"$4.41000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/17801f.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT1781CNPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT1781CNPBF 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}}