{"product_id":"adafruit-4-channel-i2c-safe-bi-directional-logic-level-converter","title":"Adafruit 4-channel I2C-safe Bi-directional Logic Level Converter","description":"\u003cp\u003eBecause the Arduino (and Basic Stamp) are 5V devices, and most modern sensors, displays, flash cards and modes are 3.3V-only, many makers find that they need to perform level shifting\/conversion to protect the 3.3V device from 5V.\u003c\/p\u003e\n\u003cp\u003eThis level shifter board combines the ease-of-use of the bi-directional TXB0108 with an I2C-compatible FET design following NXP's app note.\u003c\/p\u003e\n\u003cp\u003eThis breakout has 4 BSS138 FETs with 10K pullups. It works down to 1.8V on the low side, and up to 10V on the high side. The 10K's do make the interface a little more sluggish than using a TXB0108 or 74LVC245 so we suggest checking those out if you need high-speed transfer.\u003c\/p\u003e\n\u003cp\u003eWhile Adafruit designed it for use with I2C, this works as well for  TTL Serial,  slow \u0026lt;2MHz SPI, and any other digital interface both uni-directional and bidirectional. Comes with a fully assembled, and tested PCB with 4 full bidirectional converter lines as well as 2 pieces of 6-pin header you can solder on to plug into a breadboard or perfboard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTECHNICAL DETAILS\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/datasheets\/BSS138.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBSS138 Datasheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/4-Channel-Level-Shifter-PCB\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEagleCAD PCB files on GitHub\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Fritzing-Library\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eFritzing library\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/datasheets\/AN10441.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eThe newer NXP app note explaining how it works\u003c\/a\u003e (the older \u003ca href=\"https:\/\/cdn-shop.adafruit.com\/datasheets\/an97055.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ePhilips version of the app note\u003c\/a\u003e is also worth a read)\u003c\/p\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":302017581,"sku":"ADA757","price":3.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/757.jpg?v=1476717159","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-4-channel-i2c-safe-bi-directional-logic-level-converter","provider":"Pimoroni Ltd","version":"1.0","type":"link"}