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Bi-Directional Logic-Voltage Level Converter, 4CH
  • Bi-Directional Logic-Voltage Level Converter, 4CH
  • Bi-Directional Logic-Voltage Level Converter, 8CH

Bi-Directional Logic-Voltage Level Converter, 4CH & 8CH

$7.00

SKU: 757

Barcode: 2301651

Availability: Many in stock


Quantity:
+

Adafruit Industries - Logic Level Converter, 4CH and 8CH

 

 

 

Product Description 

 

Because there are popular 5V devices, and most modern sensors, displays, flash cards and modes are 3.3V-only, many builders find that they need to perform level shifting/conversion to protect the 3.3V device from 5V.

 

4-channel I2C-safe Bi-directional Logic Level Converter - TXB0108 Chip + BSS138 Chips

 

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 Adafruit suggests checking those out if you need high-speed transfer.

 

While Adafruit designed it for use with I2C, this works great for SPI, TTL Serial, 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.

 

 

8-channel Bi-directional Logic Level Converter - TXB0108 Chip

 

This chip performs bidirectional level shifting from pretty much any voltage to any voltage and will auto-detect the direction.

 

Only thing that doesn't work well with this chip is i2c (because it uses strong pullups which confuse auto-direction sensor). If you need to use pullups, you can but they should be at least 50K ohm - the ones internal to AVRs/Arduino are about 100K ohm so those are OK! Its a little more luxurious than a 74LVX245 but if you just don't want to worry about directional pins this is a life saver!

 

This breakout saves you from having to solder the very fine pitch packages that this chip comes with. Also added 0.1uF caps onto both sides and a 10K pull-up resistor on the output enable pin so you can use it right out of the box!

 

 

Contents of Shipment

 

- 1 x Adafruit Logic Level Converter Board of your choice

 

 

Information and Features

 

- Bi-direction voltage level conversion(logic)
- The 4CH model is compatible with I2C configurations
- The 8CH model is not I2C compatible, but has a wider voltage shift range and auto-detects direction.

 

 

Specifications and Data

 

4-channel I2C-safe Bi-directional Logic Level Converter

DATASHEET - http://www.farnell.com/datasheets/1683643.pdf

 

 

8-channel Bi-directional Logic Level Converter

DATASHEET - http://www.farnell.com/datasheets/1683641.pdf

 

 

Manufacturer Connection

 

4-channel I2C-safe Bi-directional Logic Level Converter

MANUFACTURER'S PRODUCT PAGE - https://www.adafruit.com/products/757

 

8-channel Bi-directional Logic Level Converter

MANUFACTURER'S PRODUCT PAGE - https://www.adafruit.com/product/395

 

 

Manufacturer's Downloads

No Applicable.

 

 

Manufacturer's Knowledge Base - Library

 

Adafruit Industries Knowledge Base - https://learn.adafruit.com/

 

 

 

 

Civilstock - Shipping Rates

 

 

Civilstock - Shipping Rates

 

 

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Of course you can select a Shipping Method from our List when finalizing your Bag but if any doubt at all, please select the Civilstock Office option.

 

Please note: ALL Orders are manually processed always. So, if a shipping option is added to the Bag, there is still no charge, NOT until a payment confirmation is sent by our staff member who has manually checked all parts of your order and is completely satisfied that we are going to deliver your product(s) as inexpensively as possible, and has fully applied all policies of supplier shipping credits to your order.

 

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