GeeekPi 6Pack TXS0108E 8 Channel Logic Level Converter Bi-Directional High Speed Full Duplex Shifter 3.3V 5V for Arduino Raspberry Pi

Using to convert MIDI signals from 3.3 to 5 v and back. Also good for i2c

Level shifter works as expected level shift 3.3 to 5v. on my orange pi 2w zero (allwinner h618 soc) the chip produced a nice 56Mhz oscillation from 3.2v to 2.0v with any input signal on port A. I had to add an RC filter on port B output (50-75ohm, 500pf - 1nf). If I had a sufficiently low value inductor I would have used an LC filter to preserve rise and fall times. Anyway, I ended up switching to a Schmidt trigger (sn74lvc-xxx) powered at 5v and had incredibly sharp transitions, no need for any filtering, just nice clean signal. TLDR: use a schmidt trigger for signals over ~400Kbps (YMMV)

I should have listened to the reviews. The first two I tried did were broken. The third one worked but created horrible EMI which gave me noise on my digital IO pins and corrupted the flash on my microcontroller.

They do what they say

Simply didn't work. Wired it up according to the datasheet, and the first 3 failed to output any high signal on the VB side whether there was a load or not. Should have read more reviews before purchasing. At this point I don't care if the rest work, with a failure rate that high they can't be trusted.

Tried all 6 for using with ws2811 pixels to convert 3.3v to 5v data signal. Tried everything I could search for on the Internet with no luck. Switched to the 4 channel I2C modules and worked perfect. Don't think the units were defective but just not compatible with my application.

Came as a pack of 6 boards. Only 3 worked. 2 were completely dead. 1 mostly worked but one pin was bad. The other 3 boards worked perfectly. So only expect to get a few working boards if you order this. Jury is still out on how long they will last...

Of the six, only one of them kinda worked (two channels of the eight). I looked through the TI datasheet (I'm an engineer) and I'm using it well within the rated specs. TI makes good parts so I'm guessing they die when whoever is placing them on the little board or when traveling in the individual plastic bags (not anti-static bags). Probably ESD the way they are packed. Save your time and money.

I didn't realize that this IC (TXS0108) is not the same as the TXB0108 which I have been using for years. I use the TXB0108 to convert UART signals between a 3.5V microcontroller and a 5V device. This PCB with the TXS0108 apparently works differently and I think it requires other components because all my connections were find but data was not going through. For the price of the TXB0108 dev board, I didn't wast time goign through the datasheets of the TXS0108 to figure what was wrong, I just ordered the TXB0108 from another website.

Compatible IC2 , super

Utilizados para varias PCB entre pines de arduino y señales de sensores de bajo nivel. Funcionan muy bien. No lo he probado a grandes frecuencias pero para buses estándar van bien.

Chaque composant possède 2 rangées de 10 broches. Après avoir reçu la commande, j'ai regardé le descriptif de l'article sur Amazon et celui-ci précise que l'article est livré avec 2 connecteurs de 8 broches et en fin de compte, on reçoit 2 connecteurs de 7 broches. Remarquez 8, c'était déjà perdu.

Con esto consigo en mis proyectos DiY poder interactuar con elementos de diferentes voltages sin hacer conversión previa el TXS ya lo hace por mi.