PI3B3126WEX

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The PI3B3126WEX can be classified under Logic - Signal Switches, Multiplexers, Decoders. It is a low-to-high voltage level shift circuit which uses PMOS devices to provide voltage level translation between two independent logic systems. The PI3B3126WEX is developed to provide a low-cost and reliable solution when dealing with different power supply voltages across I/O devices.In this way, its application field broadens from starting from single power supply design to dual power supply designs.

The PI3B3126WEX allows to transfer voltage from a low voltage logic system having 3.3V to the other logic system having up to 12V of power supply. It further supports an output range up to 7V which, depends upon the power consumption of peripheral devices connected. It can also be used to translate from 5V to 3.3V or any other logic levels, making it a versatile and efficient solution for different logic level shifting applications.

As for the internal structure of this device, it has two main parts namely, level shifting bank and logic control unit. The level shifting bank includes four PMOS devices which are connected in series. This makes the device suitable for bi-directional voltage level identification. On the other hand, the logic control unit involves two input and output pins namely, SHIFT and ENABLE pins. The SHIFT input pin is used to enable/disable the shifting process while the ENABLE pin is used to control the transfer of signals between both the logic systems.

The basic working principle behind the PI3B3126WEX is very simple. When the SHIFT pin is low, the circuit is disabled and the voltage level is directly shifted from low logic level to the high logic level. But when the SHIFT pin is high, the ENABLE pin is enabled and the voltage level is shifted from the low level to the high level with the help of PMOS devices.

Moreover, the basic features of this device can be summarised as follows: It is low-cost and a reliable solution for level shifting and logic translation, offers high speed level translation, has an operating range of 3.3V to 7V, accommodates 4-15V input voltage, and it can be used for single as well as dual power supply designs.

The PI3B3126WEX is designed to enable high voltage level transformation from one logic system to other and it is ideal for level shifting applications requiring low cost and reliability. Due to lack of any external components, it is also a space saver device and the efficient structure along with superior performance makes it a good choice for various demanding applications.

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