UTP28CH23BU

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• UTP28CH23BU application field and working principle

UTP28CH23BU is a Quad 3 Line To 8 Line TTL demultiplexer designed for general purpose, high speed switching application. TTL (Transistor Transistor Logic) is a design pioneered by Texas Instruments and still in use today for various logic operations within computers and microprocessors. It is used to implement the circuit designs that control the functions inside a computer or embedded system. The UTP28CH23BU is an example of a demultiplexer, which performs the reverse operation of the multiplexer module.

Demultiplexers are devices that are used to route or decode digital information from a single signal line across multiple output lines. A Demultiplexer such as the UTP28CH23BU takes a single input data transmission line, gives it an address select line, will read that line, looks at the address, and then routes the incoming data to the correct output line. As the name implies, Demultiplexers are the reverse operation of multiplexers and they are essential for computing systems in order to control and route data to the correct locations.

The UTP28CH23BU model has four Separable Function Blocks, each contains two 3 Line to 8 Line Demultiplexers, which is referred to as a Quad 3-to-8 Demultiplexer. This Quad demultiplexer features three active LOW address inputs (A, B, and C) and three active Low Data Inputs (D0, D1, and D2) which when tied together form a single data bus. The Quad demultiplexer also features eight active Low Outputs (Y0 to Y7).

When the chip is powered on, the low active address inputs (A, B, and C) and data inputs (D0, D1, and D2) are examined. Depending on the value of the address inputs, the data from the signal bus is routed to one of the eight outputs (Y0 to Y7). All other outputs are disabled. The UTP28CH23BU is a static-operation device, so all outputs remain in the selected state, until either the address inputs or data inputs are changed.

The UTP28CH23BU is suitable for low power and high-speedBinary Coded Decimal (BCD) to Seven Segment Decoding, common bus structures, bus receiving circuits, LCD drivers, data memories, gaming structures, banking systems, computer software, and various data paths. The UTP28CH23BU is a high-speed, low power, CMOS/BiCMOS device.

The UTP28CH23BU Quad demultiplexer is fabricated using high-speed BiCMOS process that combines the low power and high speed advantages of CMOS with the high drive of Bipolar process technology.

The UTP28CH23BU model includes built-in protection against inputs and outputs in the form of ESD (ElectroStatic Discharge) and a Static Operating Switch. This protects the chip from electrical surges caused by incorrect connections or short circuits, so it can reliably function in a hostile environment.

In summary, the UTP28CH23BU is a Quad 3 line to 8 line TTL Demultiplexer designed for general purpose, high speed switching application. It is suitable for low power and high-speedBinary Coded Decimal (BCD) to Seven Segment Decoding, common bus structures, bus receiving circuits, LCD drivers, data memories, gaming structures, banking systems, computer software, and various data paths. This Quad demultiplexer features three active LOW address inputs (A, B, and C) and three active Low Data Inputs (D0, D1, and D2) which when tied together form a single data bus. The UTP28CH23BU is very useful for its speed and low power capability and is necessary to enable the digital control of most computing systems.

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