TXS0108E Logic Level Converter 8 Channel SPI 8 Way 3.3V 5V I2C IIC 8-Bit Bi-Directional Converter Arduino Raspberry

TXS0108E Logic Level Converter 8 Channel SPI 8 Way 3.3V 5V I2C IIC 8-Bit Bi-Directional Converter Arduino Raspberry
 
PACKAGE INCLUDES:
TXS0108E 8-Channel Logic Level Converter Module
Qty 2 -10-pin male header strips
KEY FEATURES OF TXS0108E 8-CH LOGIC LEVEL CONVERTER MODULE:
8 channels can convert up to 8 logic signals
Converts voltage levels between 1.2 to 3.6V and 1.65 to 5.5V systems
Bi-directional with automatic direction control
Each channel operates independently
Optimized for open-drain applications like I2C, but can also work in push-pull applications
Output enable allows outputs to be disabled
This module is typically used to connect 3.3V and 5V logic signals together, but it is compatible with many different logic voltages. The low (A) side can handle 1.2 to 3.6V logic levels. The high (B) side can handle 1.65 to 5.5V logic levels.
There are 8 bi-directional channels which is especially useful for buses that pass data in both directions. It can also be used for unidirectional signals like SPI.
 
When hooking up power, the lower voltage side must be connected to the ‘A’ side. This will typically be 3.3V. The higher voltage side which is typically 5V should be connected to the ‘B’ side.
The device is not affected by power supply sequencing during power up, so having one side powered and the other side unpowered will not damage the device.
 
Module Operation
To use the module, you hook up the two voltages that you want to convert between to the A (low Voltage) and B (High Voltage) inputs. The higher voltage is always connected to the B side.
If using with an Arduino to interface to a 3.3V module, you would typically connect the 3.3V output of the Arduino to the Low Voltage Vcca input and the 5V output of the Arduino to the High Voltage Vccb input.
The ground connection should be common with the ground of both logic systems.
You then hook-up the lower voltage logic signals to the A1-A8 pins and the higher voltage logic signals to the corresponding B1-B8 pins (A1 connects to B1, etc) and you are set to go. There is no direction control required for the bi-directional functionality.
The OE pin needs to be pulled to Vcca if the outputs will always be enabled. Add a pull down resistor of 1K or so if you want the device to come up disabled until the uC enables it by driving the pin HIGH.
The module comes with 2 strips of male headers. These can be soldered on for use on a breadboard, or you can attach wires directly to the board depending on what your application requires. 
 
Module Connections :
The board has the following I/O connections:
VA = Low voltage. Must be lower voltage than VB. Typically tied to 3.3V
VB = High voltage. Must be higher voltage than VA. Typically tied to 5VV
GND = Ground. Should be common to both voltage systems.
A1 / B1 = Channel 1
A2 / B2 = Channel 2
A3 / B3 = Channel 3
A4 / B4 = Channel 4
A5 / B5 = Channel 5
A6 / B6 = Channel 6
A7 / B7 = Channel 7
A8 / B8 = Channel 8
OE = Output Enable. Active HIGH.