CD74HC251MG4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-Speed, CMOS Logic, 8-Channel, Non-Inverting
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: CD74HC251MG4 is a high-speed CMOS logic IC that functions as an 8-channel data selector/multiplexer. It provides non-inverting outputs and is commonly used in digital electronic circuits.
• Packaging/Quantity: CD74HC251MG4 is available in a standard SOIC package and is typically sold in reels or tubes containing multiple units.

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: HC (High-Speed CMOS)
• Number of Channels: 8
• Input Compatibility: TTL, CMOS
• Output Type: Non-Inverting
• Propagation Delay: 9 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The CD74HC251MG4 has a total of 16 pins arranged in a dual in-line package (DIP). The pin configuration is as follows:

__ __ A1 |1 \__/ 16| Vcc B1 |2 15| A0 C1 |3 14| A2 D1 |4 13| A3 D2 |5 CD 12| A4 C2 |6 74 11| A5 B2 |7 HC 10| A6 GND |8 9| A7 ----------

Functional Features

• CD74HC251MG4 is designed to select one of the eight input data lines and route it to the output based on the control inputs.
• It operates at high speed, making it suitable for applications requiring fast data selection or multiplexing.
• The non-inverting outputs ensure that the selected data is reproduced without any inversion.
• The IC is compatible with both TTL and CMOS logic levels, allowing seamless integration into various digital circuits.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data selection and multiplexing. - Non-inverting outputs preserve the integrity of the selected data. - Wide supply voltage range allows flexibility in different power supply configurations. - Compatibility with TTL and CMOS logic levels enhances versatility.

Disadvantages: - Limited number of channels (8) may not be sufficient for certain complex applications. - Propagation delay of 9 ns (typical) may introduce slight latency in time-critical systems.

Working Principles

CD74HC251MG4 utilizes a combination of logic gates and multiplexers to achieve its functionality. The control inputs determine which of the eight input data lines is selected and routed to the output. The internal circuitry ensures that the selected data is reproduced without any inversion. The IC operates based on the principles of CMOS logic, providing high-speed performance and low power consumption.

Detailed Application Field Plans

CD74HC251MG4 finds application in various digital electronic systems, including but not limited to: 1. Data routing and selection in microcontrollers and microprocessors. 2. Address decoding in memory systems. 3. Input/output (I/O) expansion in embedded systems. 4. Multiplexing of sensor signals in industrial automation. 5. Signal routing in communication systems.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to CD74HC251MG4 are: 1. SN74HC251: This IC is a pin-to-pin compatible alternative from Texas Instruments. 2. MC74HC251: Manufactured by ON Semiconductor, this IC provides similar features and performance. 3. 74HCT251: This IC from NXP Semiconductors offers compatibility with both CMOS and TTL logic levels.

These alternative models can be considered based on specific requirements and availability in the market.

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