From a2bfd3a94ed87bce64bd2230732cc06198c33c06 Mon Sep 17 00:00:00 2001 From: Mike Barela Date: Fri, 17 May 2019 13:55:43 -0400 Subject: [PATCH] Update README.md --- README.md | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/README.md b/README.md index 059a5a5..d05e4ed 100644 --- a/README.md +++ b/README.md @@ -1,4 +1,21 @@ -4-Channel-Level-Shifter-PCB -=========================== +# Adafruit 4 Channel Level Shifter PCB +
+Click here to purchase one from the Adafruit shop -PCB files for the BSS138-based 4 channel level shifter +This level shifter board combines the ease-of-use of the bi-directional TXB0108 with an I2C-compatible FET design following NXP's app note. + +This 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. + +While we designed it for use with I2C, this works as well for TTL Serial, slow <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. + +These are the Eagle CAD files for the Adafruit BSS138-based 4 channel level shifter + +### License + +Adafruit invests time and resources providing this open source design, please support Adafruit and open-source hardware by purchasing products from [Adafruit](https://www.adafruit.com)! + +All text above must be included in any redistribution + +Designed by Limor Fried/Ladyada for Adafruit Industries. +Creative Commons Attribution/Share-Alike, all text above must be included in any redistribution. +See license.txt for additional information.