The reason amount converter you have talked about keeps two bidirectional, open-drain stations by FETs, as well as 2 one-way stage shift stations (HIGH-In and LOW-out) by resisters performing voltage divider. Bidirectional open-drain level shifters include (by picking appropriate FETs) appropriate for I2C bus, nonetheless it features repaired tall- and Low-voltage sides. Buffer-gate means bidirectional stage shifters like TX010x established ones has two edges and any side of it tends to be allotted to High (or Low) voltage part, though lines pulled-up may confuse the chip as supersat stated earlier rather than appropriate for I2C.
No slew. No complications. I am actually grateful observe that you dudes produced this a breakout panel. One-word of care, though. The VCC Isolation feature (which places the pins in a HighZ county) operates during startup as long as your connect OE to floor via a pulldown. It does not matter which rail capabilities up basic, but before the VCCa railway is actually stimulated OE will continue to be held lower, keeping the pins HighZ. Hence – make sure you connect OE to GND with a weak pulldown (10-50k), and then leave the solder jumper connected.
No guarantees, but from fast glimpse it seems like Tx Instruments CD4504 might suit you perfectly. It certainly depends upon what you’re trying to perform with-it. I2C? SPI? Present from 5-20V. Connect CHOOSE to GND and you should posses yourself a A-B CMOS translator.
My personal personnel is constantly developing prototypes which entail mixing numerous off of the shelf eval boards with our enterprises tech as well as other single board microcontrollers, and therefore apparently constantly searching for shifting amount between devices. After debugging and evaluating the prototypes, we frequently deliver the TXB010X group of stage shifters (typically in an inferior package and available in 1,2,4,6, or 8 little bit) to our custom made boards that will help maintain persistence for debugging.
This board is a simple breakout board taking the signals to 0.1″ header holes while simplifying the OE experience of a solder jumper to VCCA, eliminating further soldering perform any time you merely want this product always-on. In instances in which energy is very important or it really is beneficial to show up like a bus is disconnected, the OE pin are arranged highest by a GPIO to power down the unit and also the outputs is certainly going to increased impedance condition.
Since the TXB0104 try largely designed for push-pull indicators as opposed to open-drain it truly does work really well for UART and SPI shuttle software, whereas for open-drain signals such as I2C, the BOB-12009 was a far better option (that I furthermore usually buy in large quantities and inventory inside our laboratory).
Great for SPI
I tried amount changing an ADXL362 breakout board with resistors and only got rubbish out from the panel. Then I ordered the TXB0104 slapped some header pins about it and put in onto my breadboard and is up and running within a few minutes. I was in a position to operate my personal SPI_CLOCK_DIV all the way doing 2 on a 16MHz Arduino acquire facts through the ADXL362. Since I have will integrate the actual TXB0104 processor chip into a custom board I really like the concept of obtaining four lines handled with a minor leg printing and elements in comparison to using different BSS138s.
levels shifter
although it might-be 
great, i obtained confused with levels shifter that will probably work with I2C bus. The information layer on the TI device suggests that this panel can not be employed for I2C bus amount shifting.
Handy tool
This is exactly a handy and low-priced cure for one common problem. One issue we went into–and it really is an issue with the IC, not with SparkFun’s breakout board–is your IC will oscillate in the event the burden on any production is actually hefty. If you find that’s the circumstances, incorporate a buffer IC downstream for the productivity.