{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC1555LEGN-1.8#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC1555LEGN-1.8PBF","canonicalUrl":"https://icboms.com/analog-devices/LTC1555LEGN-1.8PBF","factsUrl":"https://icboms.com/api/mcp/products/LTC1555LEGN-1.8%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC1555LEGN-1.8#PBF, Voltage Level Translator, Bidirectional, Open Drain, 1 Circuit, 1 Channel, 16-SSOP Package, Surface Mount, -40°C to 85°C.","salesMarkdown":"## SIM card voltage translator with thermal shutdown The Analog Devices LTC1555LEGN-1.8#PBF is a single-channel bidirectional voltage level translator designed specifically for SIM card interfaces. It integrates thermal-shutdown protection and an open-drain output stage, making it a drop-in solution for translating between a low-voltage host controller (VCCA: 1.425 V to 4.4 V) and a SIM card operating at a higher voltage (VCCB: 2.6 V to 6 V). The part is housed in a 16-SSOP surface-mount package and rated for industrial temperature environments from -40°C to 85°C. ## Supply voltage ranges — matching the SIM and the host VCCA accepts 1.425 V to 4.4 V. VCCB spans 2.6 V to 6 V. ## Single bidirectional channel — one bit at a time This is a one-circuit, one-channel translator with bidirectional open-drain outputs. ## Thermal shutdown — protection for the SIM slot The integrated thermal-shutdown protection disables the output drivers if the die temperature exceeds the threshold. ## Active lifecycle — no end-of-life concern The LTC1555LEGN-1.8#PBF is listed as Active with ROHS3 compliance. There is no last-time-buy notice or obsolescence risk for this order code. The Tube shipping medium is suitable for prototype and low-volume builds; if your production line requires Tape & Reel, the LTC1555LEGN-1.8#TRPBF variant uses the same die and package but ships in Tape & Reel, Cut Tape, or Digi-Reel.","metaTitle":"LTC1555LEGN-1.8#PBF Voltage Level Translator","metaDescription":"LTC1555LEGN-1.8#PBF bidirectional voltage level translator with SIM card interface and thermal shutdown. VCCA 1.425-4.4V, VCCB 2.6-6V. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Features":"SIM Card Interface, Thermal-Shutdown Protection","Output Type":"Open Drain","Channel Type":"Bidirectional","Mounting Type":"Surface Mount","Package / Case":"16-SSOP (0.154\\\", 3.90mm Width)","Voltage - VCCA":"1.425 V ~ 4.4 V","Voltage - VCCB":"2.6 V ~ 6 V","Translator Type":"Voltage Level","lifecycle_stage":"eol_hot","Number of Circuits":"1","Channels per Circuit":"1","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"16-SSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$7.01","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$7.01000","currency":"USD"},{"qty":10,"price":"$6.33600","currency":"USD"},{"qty":25,"price":"$6.04080","currency":"USD"},{"qty":100,"price":"$5.24530","currency":"USD"},{"qty":250,"price":"$5.00956","currency":"USD"},{"qty":500,"price":"$4.56754","currency":"USD"},{"qty":1000,"price":"$4.17000","currency":"USD"}]},"links":{"datasheetUrl":"https://www.analog.com/media/en/technical-documentation/data-sheets/1555l18f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LTC1555LEGN-1.8#PBF suitable for SIM card voltage translation?","answer":"Yes, it is specifically designed for SIM card interfaces. It includes thermal-shutdown protection and supports bidirectional open-drain level translation between a low-voltage host and a higher-voltage SIM card."},{"question":"Does LTC1555LEGN-1.8#PBF have open-drain outputs and how many channels?","answer":"Yes, the output type is open drain. It has one circuit with one bidirectional channel."},{"question":"What is the difference between LTC1555LEGN-1.8 and LTC1555LEGN?","answer":"The LTC1555LEGN-1.8#PBF has a fixed 1.8 V nominal VCCA range (1.425 V to 4.4 V), while the LTC1555LEGN#PBF (without the -1.8 suffix) has a VCCA range starting at 1.425 V but with a different default programming. Both are bidirectional single-channel translators with SIM card interface and thermal shutdown. The -1.8 variant is optimized for 1.8 V host-side operation."},{"question":"Can LTC1555LEGN-1.8#PBF be used with 1.8V and 3V SIM cards?","answer":"Yes. For a 3 V SIM card, set VCCB to 3 V (within the 2.6 V to 6 V range). For a 1.8 V SIM card, VCCB must be at least 2.6 V, so you would need an external regulator to step down from a higher supply to 1.8 V for the SIM card itself, while VCCB remains at 2.6 V or above for the translator."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC1555LEGN-1.8PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC1555LEGN-1.8PBF 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}}