CD74HCT251E

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The CD74HCT251E is a member of the Texas Instruments High-Speed CMOS Logic (HCT) series of integrated circuits (ICs). It is a member of the Multiplexers, Decoders and Logic – Signal Switches family. It is also known as a 4-input multiplexer/demultiplexer IC (a type of digital switch) and comprises of two identically-structured 2-input multiplexer sections written in TTL digital logic.

The CD74HCT251E is suitable for many typical applications including encoding, decoding, routing, digital logo & bio-metric applications, signal selection and data storage. It is usually used in applications where signal integrity and signal multiplexing are desired.

The device operates by connecting the digital inputs of a logic – signal switch to one signal source and the general control inputs of the logic – signal switch to another signal source. The control signal is then used to determine which logic – signal switch will be used for signal multiplexing. When activated by the control signal, the logic – signal switch will enable the desired signal to be connected between the two signal sources. This allows for efficient and cost-effective signal multiplexing.

The CD74HCT251E has a wide range of features including high speed input-to-output propagation delay, very low power dissipation and extremely reliable output. It also offers extensive protection against transients and surge overvoltages.

Other features of the CD74HCT251E include wide voltage range (5V to 15V), programmable input-to-output delay times, optional control voltage detection and inversion, logic type polarity control, surge protection and power-on reset.

The CD74HCT251E is generally available in a 16-pin (plastic) dual in-line package. The pads on the chip are standard and the connections are compatible with both through-hole and surface mount techniques.

In summary, the CD74HCT251E is an ideal solution for applications requiring authorization, encoding, decoding, routing and data storage. Its properties allow for efficient and cost effective signal multiplexing, making it suitable for multiple markets and applications.

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