CD74HC147MT

Product Overview

• Category: Integrated Circuit
• Use: Encoder/Decoder
• Characteristics: High-Speed, CMOS Logic, 10-Line to 4-Line Priority Encoder
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The CD74HC147MT is a high-speed CMOS logic integrated circuit that functions as a 10-line to 4-line priority encoder. It encodes the highest priority input line into a binary code output.
• Packaging/Quantity: The CD74HC147MT is typically sold in reels or tubes and comes in quantities of 2500 units per reel/tube.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 20 ns (typical)
• Quiescent Current: 4 µA (maximum)

Pin Configuration

The CD74HC147MT has a total of 16 pins. The pin configuration is as follows:

__ __ A3 |1 \__/ 16| VCC A2 |2 15| A0 A1 |3 14| E A0 |4 13| D0 D3 |5 12| D1 D2 |6 CD 11| D2 D1 |7 74 10| D3 D0 |8 HC 9| GND -- --

Functional Features

The CD74HC147MT is designed to encode 10 input lines into a 4-bit binary code. It has a priority scheme where the highest priority input line is encoded first. The encoded output is represented by a 4-bit binary code, with the most significant bit (MSB) representing the highest priority input.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Compact package size - Wide supply voltage range - Easy to use and integrate into digital systems

Disadvantages: - Limited number of input lines (10) - Limited number of output bits (4) - Not suitable for applications requiring more complex encoding schemes

Working Principles

The CD74HC147MT operates based on the priority encoding principle. It scans the input lines from highest to lowest priority and encodes the highest priority active input into a 4-bit binary code. The encoded output is then available at the D0-D3 pins.

Detailed Application Field Plans

The CD74HC147MT can be used in various applications that require priority encoding, such as:

1. Data transmission systems
2. Address decoding in memory devices
3. Priority-based interrupt controllers
4. Multiplexing and demultiplexing circuits
5. Control systems with multiple inputs and limited output bits

Detailed and Complete Alternative Models

There are several alternative models available that offer similar functionality to the CD74HC147MT. Some popular alternatives include:

1. 74LS148: TTL Logic, 8-Line to 3-Line Priority Encoder
2. CD4028: CMOS Logic, BCD-to-Decimal Decoder
3. SN74LS151: TTL Logic, 8-Line to 1-Line Data Selector/Multiplexer
4. CD4511: CMOS Logic, BCD-to-7-Segment Decoder/Driver

These alternative models provide different features and pin configurations, allowing users to choose the most suitable option for their specific application requirements.

In conclusion, the CD74HC147MT is a high-speed CMOS logic integrated circuit that serves as a 10-line to 4-line priority encoder. It offers advantages such as high-speed operation, low power consumption, and a compact package size. However, it has limitations in terms of the number of input lines and output bits. The CD74HC147MT finds applications in various fields, including data transmission systems, memory devices, and control systems. Users can also consider alternative models with similar functionality based on their specific needs.