{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MC9S08SH4CTJ","brand":"NXP Semiconductors","brandSlug":"nxp","productSlug":"MC9S08SH4CTJ","canonicalUrl":"https://icboms.com/nxp/MC9S08SH4CTJ","factsUrl":"https://icboms.com/api/mcp/products/MC9S08SH4CTJ","rawCanonicalId":null},"summary":{"shortDescription":"NXP S08 8-bit MCU, MC9S08SH4CTJ, 40 MHz core, 4 KB Flash, 256 x 8 RAM, 17 I/O, I²C/SPI/LIN, 2.7V–5.5V, -40°C to 85°C, 20-TSSOP.","salesMarkdown":"## What this 8-bit MCU is and where it fits The NXP MC9S08SH4CTJ is an 8-bit microcontroller from the S08 family, built around the S08 core running at 40 MHz. It packs 4 KB of Flash program memory and 256 x 8 bytes of RAM, with 17 general-purpose I/O lines. ## 40 MHz core — what it buys you At 40 MHz, this S08 core executes most instructions in a single clock cycle, giving roughly 40 MIPS throughput. That is enough to handle a PID loop at a few kHz, poll a dozen digital inputs, and manage a LIN or SCI serial link without dropping bytes. For comparison, the MK51DX128CMC7 runs at 72 MHz on a Cortex-M4 core — a different performance tier with DSP extensions and more memory. ## Memory and I/O — sizing the BOM 4 KB of Flash and 256 bytes of RAM limit firmware to compact state machines, lookup tables, and short communication buffers. ## Lifecycle and sourcing The MC9S08SH4CTJ is listed as Active with ROHS3 compliance. No end-of-life notice or last-time-buy schedule is in effect, so it remains a safe choice for new production builds. The 20-TSSOP package is widely stocked, and the part is compatible with standard reflow profiles.","metaTitle":"NXP MC9S08SH4CTJ 8-bit MCU, 40 MHz, 4 KB Flash, 20-TSSOP","metaDescription":"NXP MC9S08SH4CTJ 8-bit S08 MCU with 40 MHz core, 4 KB Flash, 256×8 RAM, 17 I/O, I²C/SPI/LIN. Industrial temp -40 to 85°C. Active lifecycle.","metaKeywords":null},"attributes":{"series":"S08","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Speed":"40MHz","Series":"S08","Package":"Tube","RAM Size":"256 x 8","Core Size":"8-Bit","Peripherals":"LVD, POR, PWM, WDT","Connectivity":"I²C, LINbus, SCI, SPI","Mounting Type":"Surface Mount","Number of I/O":"17","Core Processor":"S08","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","Data Converters":"A/D 12x10b","Oscillator Type":"Internal","lifecycle_stage":"eol_hot","Program Memory Size":"4KB (4K x 8)","Program Memory Type":"FLASH","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"20-TSSOP","Voltage - Supply (Vcc/Vdd)":"2.7V ~ 5.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.94","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.94000","currency":"USD"},{"qty":10,"price":"$3.85900","currency":"USD"},{"qty":100,"price":"$3.16160","currency":"USD"},{"qty":500,"price":"$3.09516","currency":"USD"},{"qty":1000,"price":"$2.61038","currency":"USD"},{"qty":2500,"price":"$2.47987","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/484687fde6411e2cbac7bf9c6d34c15c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy MC9S08SH4CTJ and get a price?","answer":"This part is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing — confirmed at quote time."},{"question":"Is MC9S08SH4CTJ RoHS compliant?","answer":"Yes, it is ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/nxp/MC9S08SH4CTJ","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/nxp/MC9S08SH4CTJ 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}}