{"product_id":"10pcs-iso1540d-soic-8-2-5kvrms-bidirectional-i2c-isolator-ic","title":"10pcs ISO1540D SOIC-8 2.5kVrms Bidirectional I2C Isolator IC","description":"\n\u003ch2\u003eISO1540D \/ ISO1540DR – 2.5kVrms Bidirectional I²C Isolator (Pack of 10)\u003c\/h2\u003e\n\u003cp\u003eGet reliable galvanic isolation for your I²C bus with this pack of \u003cstrong\u003e10 × ISO1540D \/ ISO1540DR ICs\u003c\/strong\u003e in the compact \u003cstrong\u003eSOIC-8 package\u003c\/strong\u003e. Designed for engineers, makers, and electronics hobbyists who need robust two-way communication across an isolation barrier, these chips deliver up to \u003cstrong\u003e2,500 Vrms of isolation voltage\u003c\/strong\u003e, protecting sensitive microcontrollers and sensors from high-voltage transients and ground-loop interference.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBidirectional I²C isolation\u003c\/strong\u003e – fully transparent SCL and SDA lines in both directions; no extra logic required\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e2.5 kVrms isolation voltage\u003c\/strong\u003e – robust galvanic barrier suitable for industrial and general-purpose designs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSOIC-8 package (ISO1540D \/ ISO1540DR)\u003c\/strong\u003e – easy to solder, compatible with standard PCB footprints\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupports I²C clock frequencies\u003c\/strong\u003e up to 1 MHz (Fast Mode Plus)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow propagation delay\u003c\/strong\u003e – maintains signal integrity for time-sensitive I²C transactions\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide supply voltage range\u003c\/strong\u003e – works with both 3.3 V and 5 V systems on either side of the isolation barrier\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGeneral-purpose use\u003c\/strong\u003e – suitable for industrial automation, sensor isolation, medical instrumentation prototyping, motor drives, and more\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack of 10\u003c\/strong\u003e – ideal for prototyping runs, small batch production, or stocking your component drawer\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eISO1540D \/ ISO1540DR\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSOIC-8\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIsolation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2,500 Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInterface\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBidirectional I²C (SCL + SDA)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Clock Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 MHz (FM+)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.3 V \/ 5 V compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 pieces per order\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're designing an industrial PLC interface, isolating a sensor from a noisy power bus, or building a prototype that demands electrically separated I²C segments, the ISO1540D delivers a drop-in, no-fuss solution. Its standard SOIC-8 footprint makes it straightforward to incorporate into new or existing PCB layouts.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/electromagnetic-induction-tester-coil-motherboard-fault-detector\"\u003eElectromagnetic Induction Tester – Coil \u0026amp; Circuit Fault Detector\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/air-compressor-pressure-gauge-0-10-0-12-0-25-bar-hydraulic-diy\"\u003eAir Compressor Pressure Gauge 0-10\/0-12\/0-25 Bar | DIY Tool\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the ISO1540D used for in electronic circuits?\u003c\/h4\u003e\n\u003cp\u003eA: The ISO1540D is a bidirectional I²C isolator IC. It creates a galvanic isolation barrier between two sections of an I²C bus, preventing high-voltage transients, ground loops, and noise from one side of the circuit from damaging or disrupting components on the other side. It is commonly used in industrial automation, motor control, sensor interfaces, and any design where the I²C master and slave operate on different ground potentials.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the ISO1540D compatible with both 3.3 V and 5 V microcontrollers?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The ISO1540D supports mixed-voltage designs, allowing one side to operate at 3.3 V and the other at 5 V, making it versatile for connecting modern low-voltage microcontrollers to legacy 5 V peripherals or vice versa.\u003c\/p\u003e\n\u003ch4\u003eQ: What is the difference between ISO1540D and ISO1540DR?\u003c\/h4\u003e\n\u003cp\u003eA: The ISO1540D is the standard SOIC-8 variant, while the ISO1540DR is the tape-and-reel packaged version of the same chip — both are electrically identical. This pack includes both markings (D and DR), so you receive genuine compatible parts regardless of the suffix on the label.\u003c\/p\u003e\n\u003ch4\u003eQ: How many ICs are included in one order?\u003c\/h4\u003e\n\u003cp\u003eA: Each order includes 10 pieces of the ISO1540D \/ ISO1540DR in SOIC-8 packaging, making it ideal for prototyping, small production runs, or replenishing your component stock.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the ISO1540D used for in electronic circuits?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The ISO1540D is a bidirectional I²C isolator IC. It creates a galvanic isolation barrier between two sections of an I²C bus, preventing high-voltage transients, ground loops, and noise from one side of the circuit from damaging or disrupting components on the other side. 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