{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3S5749-IQC50-A0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3S5749-IQC50-A0","canonicalUrl":"https://icboms.com/texas-instruments/LM3S5749-IQC50-A0","factsUrl":"https://icboms.com/api/mcp/products/LM3S5749-IQC50-A0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Stellaris LM3S5749-IQC50-A0, ARM Cortex-M3 32-bit MCU, 50 MHz, 128 KB Flash, 64 KB RAM, 61 I/O, CAN/I2C/SPI/UART/USB, 8x10b ADC, 100-LQFP, -40 to 85°C, 2.25 to 2.75 V supply, Tray, NRND.","salesMarkdown":"## ARM Cortex-M3 at 50 MHz — the mid-range Stellaris workhorse ## Industrial temperature grade and 2.5 V supply rail Plan the power tree accordingly; a standard 3.3 V system will need an LDO to drop to 2.5 V. Production has not ceased, but TI is steering new designs toward a successor. The NRND flag means the last-time-buy window is open — if this MCU is on your BOM, securing inventory now avoids a later shortage scramble. ## CAN and USB — the connectivity differentiator The built-in CANbus controller and USB interface set this MCU apart from simpler Stellaris parts that lack these peripherals. For a control node that needs to talk on a CAN bus and also present a USB port for configuration or data logging, the LM3S5749 handles both without external bridge chips. The QEI peripheral is a bonus for motor-speed and position feedback loops in servo or conveyor applications.","metaTitle":"LM3S5749-IQC50-A0 Stellaris ARM Cortex-M3 MCU, 50 MHz","metaDescription":"Texas Instruments LM3S5749-IQC50-A0 ARM Cortex-M3 MCU, 50 MHz, 128 KB Flash, 64 KB RAM, CAN/USB, 100-LQFP, -40 to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mfr":"Texas Instruments","Speed":"50MHz","Series":"Stellaris® ARM® Cortex®-M3S 5000","Package":"Tray","RAM Size":"64K x 8","Core Size":"32-Bit Single-Core","EEPROM Size":"-","Peripherals":"Brown-out Detect/Reset, DMA, POR, PWM, WDT","Connectivity":"CANbus, I²C, IrDA, Microwire, QEI, SPI, SSI, UART/USART, USB","Mounting Type":"Surface Mount","Number of I/O":"61","Core Processor":"ARM® Cortex®-M3","Package / Case":"100-LQFP","Product Status":"Not For New Designs","Data Converters":"A/D 8x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Base Product Number":"LM3S5749","Program Memory Size":"128KB (128K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"100-LQFP (14x14)","Voltage - Supply (Vcc/Vdd)":"2.25V ~ 2.75V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$29.7603","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/368a9fa6b2b092ba8f46bbc7ba860922.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3S5749-IQC50-A0/alternatives.json"},"ai":{"faq":[{"question":"Is LM3S5749-IQC50-A0 obsolete or NRND?","answer":"It is not fully discontinued, but TI recommends against using it in new product designs. Existing production runs can still be supported through the independent channel."},{"question":"Does LM3S5749-IQC50-A0 have a built-in CAN controller?","answer":"Yes, the LM3S5749 includes a CANbus controller as part of its peripheral set, along with USB, I²C, SPI, UART, and QEI interfaces."},{"question":"Is LM3S5749-IQC50-A0 pin compatible with other Stellaris parts?","answer":"The 100-LQFP package is common across the Stellaris family, and many Stellaris MCUs in the same package share pin compatibility within the series. Confirm the specific pin assignment against your target replacement's datasheet — the peripheral mix (CAN, USB, ADC channels) may shift pin functions between variants."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3S5749-IQC50-A0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3S5749-IQC50-A0 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}}