CD74HCT147E

Product Overview

• Category: Integrated Circuit (IC)
• Use: Encoder
• Characteristics: High-speed, CMOS logic, 10-line to 4-line priority encoder
• Package: DIP (Dual In-line Package)
• Essence: The CD74HCT147E is a priority encoder that converts the highest-priority active input into a binary code output.
• Packaging/Quantity: Available in tubes of 25 pieces or reels of 2,000 pieces.

Specifications

• Logic Family: HCT
• Number of Inputs: 10
• Number of Outputs: 4
• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 17 ns (typical)
• Output Current: ±6 mA
• Input Capacitance: 3 pF (typical)

Detailed Pin Configuration

The CD74HCT147E has a total of 16 pins arranged as follows:

```

---

| | - |1 16| - - |2 15| - - |3 14| - - |4 13| - - |5 12| - - |6 11| - - |7 10| - - |8 9| - |_______| ```

Functional Features

• Converts 10-line inputs into a 4-bit binary code output.
• Prioritizes the highest-priority active input.
• Provides an enable input for easy control of the encoding process.
• Utilizes CMOS technology for high-speed operation and low power consumption.
• Compatible with TTL (Transistor-Transistor Logic) inputs.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Easy control with enable input - Compatibility with TTL inputs

Disadvantages: - Limited number of inputs and outputs (10 and 4, respectively) - Requires external pull-up resistors for proper operation

Working Principles

The CD74HCT147E operates by prioritizing the highest-priority active input among the 10-line inputs. It converts this active input into a 4-bit binary code output. The enable input allows for easy control of the encoding process. The IC utilizes CMOS technology, which enables high-speed operation and low power consumption. It is designed to be compatible with TTL inputs, ensuring seamless integration into existing systems.

Detailed Application Field Plans

The CD74HCT147E finds applications in various fields where priority encoding is required. Some potential application areas include:

1. Data processing systems
2. Communication systems
3. Industrial automation
4. Robotics
5. Automotive electronics

Detailed and Complete Alternative Models

1. SN74LS147: 10-line to 4-line priority encoder from Texas Instruments.
2. CD4028B: BCD-to-decimal decoder from Texas Instruments.
3. 74HC148: 8-line to 3-line priority encoder from NXP Semiconductors.
4. CD4512: 8-channel data selector/multiplexer from Texas Instruments.
5. 74F148: 8-line to 3-line priority encoder from Fairchild Semiconductor.

These alternative models offer similar functionality to the CD74HCT147E and can be considered as alternatives based on specific requirements and availability.

Word count: 409 words