{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TRS3318EIPWR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TRS3318EIPWR","canonicalUrl":"https://icboms.com/texas-instruments/TRS3318EIPWR","factsUrl":"https://icboms.com/api/mcp/products/TRS3318EIPWR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TRS3318EIPWR, RS232 Transceiver, Full Duplex, 2/2 Drivers/Receivers, 460Kbps, 2.25V to 3V Supply, -40°C to 85°C, 20-TSSOP Package.","salesMarkdown":"## RS232 transceiver for low-voltage serial links The Texas Instruments TRS3318EIPWR is an RS232 transceiver in a 20-TSSOP package, configured with two drivers and two receivers for full-duplex serial communication at data rates up to 460Kbps. It operates from a 2.25V to 3V supply rail, making it a natural fit for low-voltage 3.3V or 2.5V logic systems that need to talk to legacy RS232 equipment. The industrial temperature range of -40°C to 85°C suits factory-floor automation, outdoor telecom cabinets, and instrumentation panels where the ambient temperature swings. Receiver hysteresis of 300 mV provides noise immunity on longer cable runs, reducing the risk of false edges in electrically noisy environments. ## Supply voltage and logic compatibility The supply range of 2.25V to 3V means this part is designed for low-voltage cores — it is not a 5V part. Feeding it 5V on VCC exceeds the absolute maximum and will damage the transceiver. It is compatible with 3.3V logic on the digital side (driver inputs and receiver outputs), but the RS232 bus side still swings the standard RS232 levels (±5V to ±15V typical) thanks to an internal charge-pump voltage doubler. If your system runs on a 5V-only supply, you will need a separate 3.3V or 2.5V regulator for this transceiver. ## Data rate and signal integrity For applications needing 1Mbps or higher, this part is not the right choice — the 460Kbps ceiling is a hard limit set by the driver slew rate and the charge-pump capacitor sizing. ## Package and footprint The 20-TSSOP package (4.40 mm width) is a compact surface-mount footprint suitable for dense PCBs. The supplier device package is also 20-TSSOP — no second footprint variant to track. ## Lifecycle and sourcing posture The TRS3318EIPWR is listed as Active on TI's product status, with ROHS3 compliance.","metaTitle":"TRS3318EIPWR RS232 Transceiver, Full Duplex, 460Kbps","metaDescription":"TI TRS3318EIPWR is an RS232 transceiver with full duplex 2/2 drivers/receivers, 460Kbps data rate, 2.25V-3V supply, -40°C to 85°C, 20-TSSOP. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"Transceiver","Duplex":"Full","Package":"Tape & Reel (TR); Cut Tape (CT)","Protocol":"RS232","Data Rate":"460Kbps","Mounting Type":"Surface Mount","Package / Case":"20-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"2.25V ~ 3V","Receiver Hysteresis":"300 mV","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"20-TSSOP","Number of Drivers/Receivers":"2/2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.31","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.31000","currency":"USD"},{"qty":10,"price":"$2.97400","currency":"USD"},{"qty":25,"price":"$2.81200","currency":"USD"},{"qty":100,"price":"$2.43700","currency":"USD"},{"qty":250,"price":"$2.31200","currency":"USD"},{"qty":500,"price":"$2.07456","currency":"USD"},{"qty":1000,"price":"$1.76850","currency":"USD"},{"qty":2000,"price":"$1.76850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d80f53403ead23d398841d2b5fc9eaf9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can TRS3318EIPWR be used with 5V signals?","answer":"No, the VCC supply must stay within 2.25V to 3V. The digital logic interface is 3.3V-compatible, but the RS232 bus side generates its own higher-voltage swing internally. A 5V supply will damage the part."},{"question":"What is the data rate of TRS3318EIPWR?","answer":"The maximum data rate is 460Kbps. This covers standard UART speeds up to 460800 baud, sufficient for most industrial serial protocols."},{"question":"Is there a pin-compatible alternative to TRS3318EIPWR?","answer":"Within the same TI family, the TRS3318EIPWR shares its pinout with other 2/2 RS232 transceivers in the 20-TSSOP package, such as the TRS3318EIPW (tube) variant. For a 5V-compatible alternative, consider the MAX3232 family, though verify pin compatibility."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TRS3318EIPWR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TRS3318EIPWR 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}}