PI74FCT2245ATQE

PI74FCT2245ATQE Application Field and Working Principle

PI74FCT2245ATQE belongs to the Logic Buffers, Drivers, Receivers, Transceivers classification. It is a low-power CMOS bidirectional translator/buffer, which has a high speed CMOS logic structure. It contains two non-inverting 2:1 multiplexer/demultiplexer with Schmitt trigger input and two inverting 2:1 multiplexer/demultiplexer with Schmitt trigger input. It offers speed, low power consumption and high noise immunity for high-speed data transmission.

The key features of the PI74FCT2245ATQE are its bidirectional translation capability, logic-level translation, low power consumption, high speed operation, noise immunity, ESD protection and low voltage capability. The bidirectional translation is provided for data transfer between different logic families, such as TTL and CMOS, and for different voltage levels, such as +5V, +3V and +1.8V. The device can be used to provide logic level translation between logic families and levels, reducing overall logic level translation requirements in system designs.

The PI74FCT2245ATQE contains two non-inverting 2:1 multiplexer/demultiplexer with Schmitt trigger input. This allows the device to rapidly switch between one of two selectable data paths, eliminating the need for the multiplexer and demultiplexer\'s static configuration. The multiplexer and demultiplexer each contain two Schmitt trigger inputs, allowing for fast and reliable data transmission between logic families, such as between TTL and CMOS logic. The device also contains two inverting 2:1 multiplexer/demultiplexer with Schmitt trigger input, enabling data transition between higher and lower logic levels.

In addition to providing low power consumption, high speed operation and noise immunity, the PI74FCT2245ATQE also offers ESD protection. This protection is provided by integrated ESD protection diodes, which are connected to the differential inputs of the multiplexer/demultiplexer. The ESD protection diodes protect the circuit from electrostatic discharge, helping to extend the device’s lifetime and reliability. The device also has low voltage capability, allowing operation from +1.5V to +5.5V. This makes the PI74FCT2245ATQE an excellent choice for low power applications, as it can be operated directly from a power source without the need for external voltage level shifting.

The working principle of the PI74FCT2245ATQE is simple yet effective. The device contains a multiplexer/demultiplexer with Schmitt trigger input, which is connected to the positive logic input and to the negative logic output. The input signal is then amplified and inverted to the original signal, allowing logic level translation between different logic families and different voltages. The inverting multiplexer/demultiplexer acts as a buffer between the input and output signal and helps to protect the circuit from noise. The device also contains two internal ESD protection diodes, which further protect the circuit from electrostatic discharge.

In conclusion, the PI74FCT2245ATQE is a low-power CMOS bidirectional translator/buffer, which includes two non-inverting 2:1 multiplexer/demultiplexer with Schmitt trigger input, two inverting 2:1 multiplexer/demultiplexer with Schmitt trigger input, ESD protection diodes, low voltage capability and high speed operation. The device offers low power consumption, high speed operation, noise immunity and ESD protection, making it an excellent choice for low power applications. Its working principle is based on the multiplexer/demultiplexer with Schmitt trigger input, which amplifies and inverts the input signal, providing for efficient logic level translation between different logic families and different voltages.