CD74HCT251ME4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer
• Characteristics: High-speed, CMOS logic, 8-channel multiplexer
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: CD74HCT251ME4 is a high-speed CMOS logic IC that functions as an 8-channel multiplexer. It is commonly used in digital electronics for selecting one of eight input signals and routing it to a single output line.
• Packaging/Quantity: The CD74HCT251ME4 is typically sold in reels or tubes containing multiple units.

Specifications

• Logic Family: HCT
• Number of Channels: 8
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Supply Voltage Range: 2V to 6V
• Propagation Delay Time: 16 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The CD74HCT251ME4 has a total of 16 pins, which are arranged as follows:

1. A0: Channel A0 Input
2. A1: Channel A1 Input
3. A2: Channel A2 Input
4. A3: Channel A3 Input
5. A4: Channel A4 Input
6. A5: Channel A5 Input
7. A6: Channel A6 Input
8. A7: Channel A7 Input
9. GND: Ground
10. Y: Output
11. E: Enable Input
12. B: Channel Select Input
13. C: Channel Select Input
14. D: Channel Select Input
15. VCC: Supply Voltage
16. NC: No Connection

Functional Features

• High-speed operation: The CD74HCT251ME4 is designed to operate at high speeds, making it suitable for applications that require fast switching and data routing.
• CMOS logic: It utilizes CMOS technology, which offers low power consumption and high noise immunity.
• 8-channel multiplexer: It provides the capability to select one of eight input channels and route it to the output line.
• Enable input: The enable input (E) allows the user to control the operation of the multiplexer. When E is low, the outputs are in a high-impedance state.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data routing. - CMOS logic ensures low power consumption. - Compact SOIC package allows for easy integration into circuit designs. - Wide supply voltage range provides flexibility in various applications.

Disadvantages: - Limited number of input channels (8). - Propagation delay time may affect timing-sensitive applications. - Requires careful consideration of input/output voltage levels to prevent signal distortion.

Working Principles

The CD74HCT251ME4 operates based on the principle of digital multiplexing. It uses the channel select inputs (B, C, D) to determine which input channel (A0-A7) is connected to the output (Y). The enable input (E) controls the overall operation of the multiplexer. When E is high, the multiplexer is enabled, and the selected input is routed to the output. When E is low, the outputs are in a high-impedance state, effectively disconnecting them from the input channels.

Detailed Application Field Plans

The CD74HCT251ME4 finds applications in various fields, including:

1. Data communication systems: It can be used for data routing and selection in communication networks.
2. Digital audio/video equipment: It enables signal routing and selection in audio/video processing circuits.
3. Industrial automation: It can be utilized in control systems for selecting and routing sensor signals.
4. Automotive electronics: It finds applications in vehicle control units for signal multiplexing.

Detailed and Complete Alternative Models

1. CD74HCT251E: Similar to CD74HCT251ME4, but available in a different package (PDIP).
2. SN74HCT251: Equivalent functionality in a different manufacturer's part number (Texas Instruments).

(Note: The above alternative models are provided as examples and may not cover all available alternatives in the market.)

This entry provides an overview of the CD74HCT251ME4, including its product information, specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.