CD74HCT258E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Multiplexer/Demultiplexer
• Characteristics: High-Speed CMOS Logic, 3-State Outputs
• Package: DIP (Dual In-Line Package)
• Essence: The CD74HCT258E is a quad 2-input multiplexer with 3-state outputs. It is designed to select one of four data sources and route it to the output, based on the control inputs.
• Packaging/Quantity: The CD74HCT258E is typically sold in reels or tubes, containing multiple units.

Specifications

• Supply Voltage: 2V - 6V
• Input Voltage: 0V - VCC
• Output Voltage: 0V - VCC
• Operating Temperature: -40°C to +85°C
• Propagation Delay: 9 ns (typical)
• Output Current: ±4 mA

Pin Configuration

The CD74HCT258E has a total of 16 pins, which are assigned specific functions as follows:

1. A1: Input A1
2. B1: Input B1
3. Y1: Output Y1
4. GND: Ground
5. A2: Input A2
6. B2: Input B2
7. Y2: Output Y2
8. E: Enable Input
9. Y3: Output Y3
10. B3: Input B3
11. A3: Input A3
12. Y4: Output Y4
13. VCC: Supply Voltage
14. B4: Input B4
15. A4: Input A4
16. GND: Ground

Functional Features

• Quad 2-input multiplexer with 3-state outputs
• Selects one of four data sources based on control inputs
• High-speed CMOS logic for efficient operation
• 3-state outputs allow multiple devices to share the same bus

Advantages and Disadvantages

Advantages

• Versatile multiplexer/demultiplexer functionality
• High-speed operation for efficient data routing
• 3-state outputs enable bus sharing among multiple devices
• Wide operating voltage range (2V - 6V)
• Compact DIP package for easy integration into circuits

Disadvantages

• Limited number of input/output channels (4:1)
• Propagation delay may affect real-time applications
• Requires careful handling due to sensitive CMOS technology

Working Principles

The CD74HCT258E operates as a multiplexer by selecting one of the four input sources (A1, A2, A3, A4) based on the control inputs (B1, B2, B3, B4). The selected input is then routed to the corresponding output (Y1, Y2, Y3, Y4). The E (Enable) input controls the output state, allowing it to be either active or in a high-impedance state.

Detailed Application Field Plans

The CD74HCT258E finds applications in various fields, including:

1. Data communication systems
2. Digital signal processing
3. Industrial automation
4. Robotics
5. Automotive electronics
6. Consumer electronics

Alternative Models

Here are some alternative models that offer similar functionality:

1. SN74HCT257E
2. CD74HC4051E
3. MC14051BCP
4. 74HC151N

These alternatives can be considered based on specific requirements and availability.

In conclusion, the CD74HCT258E is a versatile quad 2-input multiplexer with 3-state outputs. It offers high-speed operation, wide voltage range, and compact packaging. While it has limitations in terms of input/output channels and propagation delay, it finds applications in various fields such as data communication, digital signal processing, and industrial automation. Alternative models are available for consideration based on specific needs.