CD74HCT157E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Data Selector/Multiplexer
• Characteristics: High-Speed, CMOS Logic, Quad 2-Input Multiplexer
• Package: DIP (Dual In-line Package)
• Essence: The CD74HCT157E is a versatile multiplexer IC that allows the selection of one out of four data inputs to be routed to a single output.
• Packaging/Quantity: Available in tubes or reels, with varying quantities depending on the supplier.

Specifications

• Supply Voltage Range: 4.5V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay Time: 15ns (typical)
• Maximum Quiescent Supply Current: 4µA

Detailed Pin Configuration

The CD74HCT157E has a total of 16 pins, which are assigned specific functions as follows:

1. A Input 1
2. B Input 1
3. C Input 1
4. D Input 1
5. GND (Ground)
6. Y Output
7. E Enable Input
8. F Input 2
9. G Input 2
10. H Input 2
11. VCC (Supply Voltage)
12. I Input 3
13. J Input 3
14. K Input 3
15. L Input 3
16. NC (No Connection)

Functional Features

• Quad 2-Input Multiplexer: Allows selection of one out of four data inputs.
• High-Speed Operation: Provides fast switching times for efficient data routing.
• CMOS Logic: Utilizes complementary metal-oxide-semiconductor technology for low power consumption and high noise immunity.
• Enable Input: Allows the user to enable or disable the multiplexer as needed.

Advantages and Disadvantages

Advantages: - Versatile data selection capabilities - High-speed operation - Low power consumption - Wide operating temperature range

Disadvantages: - Limited to 2-input multiplexing - Not suitable for applications requiring more than four data inputs

Working Principles

The CD74HCT157E operates based on the principles of digital logic. The inputs A, B, C, and D are used to select one of the four data inputs, while the E input enables or disables the multiplexer. When enabled, the selected data input is routed to the output pin Y. The CMOS technology ensures efficient operation with minimal power consumption.

Detailed Application Field Plans

The CD74HCT157E finds applications in various fields, including:

1. Data Routing: Used in digital systems to selectively route data from multiple sources to a single destination.
2. Multiplexing: Enables the selection of different data sources for processing or transmission.
3. Control Systems: Employed in control circuits to switch between different control signals based on specific conditions.
4. Communication Systems: Facilitates data selection and routing in communication equipment such as routers and switches.

Detailed and Complete Alternative Models

1. SN74HCT157: Similar quad 2-input multiplexer IC from Texas Instruments.
2. MC74HCT157: Equivalent multiplexer IC from ON Semiconductor.
3. 74HC157: Quad 2-input multiplexer IC from NXP Semiconductors.

These alternative models offer similar functionality and can be used as replacements for the CD74HCT157E depending on availability and specific requirements.

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