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2 layers15.2 × 12.7 mmCoreElectronics Logic Level Converter Bidirectional, the printed circuit board in 3D

CoreElectronics Logic Level Converter Bidirectional

CoreElectronics/CoreElectronics-Logic-Level-Converter-Bidirectional1

A 4ch bidirectional logic level converter

Size
15.2 × 12.7 mm
Copper layers
2
Thickness
1.6 mm
Parts
19
Nets
11
Pads
42
Tracks, vias
94, 1
Pours
2
Routed
Yes
KiCad
KiCad 6 (file 20211014)
Created
11 Mar 2021
Updated
7 Nov 2022

Overview

CoreElectronics Logic Level Converter Bidirectional is an open-source printed circuit board by CoreElectronics, from the CoreElectronics/CoreElectronics-Logic-Level-Converter-Bidirectional repository on GitHub. It is a 2-layer board of 15.2 × 12.7 mm with 19 parts on 11 nets, routed with 94 tracks and 1 via.

It is built around the BSS138. Its parts include 8 resistors and 4 transistors.

Main components

1

README

README.md

Core Electronics Logic Level Converter Bidirectional, 4 Channel

This Bi-Directional Logic Level Converter is a breadboard-friendly device that converts between eg. 5V and 3.3V logic. The four channels are independent and work in both directions, making this converter appropriate for shifting I2C bus voltages.

Power the board from the two voltage sources you're using. Connect the higher voltage (eg. 5V) to the 'HV' power pin, the lower voltage (eg. 3.3V) to the 'LV' power pin, and the ground to the 'GND' pin.

Features:

  • 4 independent channels
  • Breadboard friendly - just bring your own pin headers
  • Small size (15x13mm)
  • Manufactured and supported in Australia by Core Electronics

License

This project is open source - please review the LICENSE.md file for further licensing information.

If you have any technical questions, or concerns about licensing, please contact technical support on the Core Electronics forums.

Attribution

The hardware design of this module is influenced by the design from Sparkfun.

Parts

19
QtyValueFootprintReferences
810KResistor_SMD:R_0603_1608MetricR1, R2, R3, R4, R5, R6, R7, R8
4BSS138Package_TO_SOT_SMD:SOT-23Q1, Q2, Q3, Q4
2FIDUCIALUFIDUCIALFiducial:Fiducial_0.5mm_Mask1mmJP2, JP3
1HVConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJP4
1LOGOcore-logo:core-logoG1
1LOGO_made-with-lovedatamatrix:CE07510G2
1LVConnector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_VerticalJP1
1Logo_Open_Hardware_Smallcore-logo:oshwLOGO1

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Questions

How big is the CoreElectronics Logic Level Converter Bidirectional PCB?

It measures 15.2 × 12.7 mm and has 2 copper layers, 1.6 mm thick.

What parts does the CoreElectronics Logic Level Converter Bidirectional use?

19 parts, built around the BSS138. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the CoreElectronics Logic Level Converter Bidirectional KiCad files?

From the CoreElectronics/CoreElectronics-Logic-Level-Converter-Bidirectional repository on GitHub, at the commit this page was made from: the board is PCB/CoreElectronics-Logic-Level-Converter-Bidirectional.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the CoreElectronics Logic Level Converter Bidirectional design in my own project?

Its repository states no licence, so its author keeps all rights: ask CoreElectronics before reusing the design.