Encyclopedia Entry: 74F189PC

Product Overview

Category

The 74F189PC belongs to the category of integrated circuits (ICs), specifically a synchronous binary counter.

Use

This IC is commonly used in digital electronics for counting and sequencing applications. It can be utilized in various electronic devices and systems that require precise counting functionality.

Characteristics

• Synchronous operation: The 74F189PC performs counting operations synchronously, ensuring accurate and reliable results.
• Binary counter: It counts in binary format, allowing for efficient representation and manipulation of numerical data.
• High-speed performance: This IC is designed to operate at high clock frequencies, making it suitable for time-critical applications.
• Low power consumption: Despite its high-speed capabilities, the 74F189PC consumes relatively low power, contributing to energy-efficient designs.

Package and Quantity

The 74F189PC is typically available in a 16-pin DIP (Dual Inline Package) configuration. Each package contains one unit of the IC.

Specifications

• Supply voltage: 4.5V to 5.5V
• Operating temperature range: -40°C to +85°C
• Maximum clock frequency: 33 MHz
• Counting range: 0 to 15 (4-bit binary counter)
• Output type: TTL (Transistor-Transistor Logic)

Pin Configuration

The 74F189PC features 16 pins, each serving a specific function. The detailed pin configuration is as follows:

1. Clock Enable (CE)
2. Parallel Load (PL)
3. Data Inputs (D0-D3)
4. Carry Out (CO)
5. Terminal Count (TC)
6. Down/Up Control (DU)
7. Clock Input (CLK)
8. Ground (GND)
9. Q0 Output
10. Q1 Output
11. Q2 Output
12. Q3 Output
13. Carry In (CI)
14. Master Reset (MR)
15. VCC (+5V)
16. Q0' Output

Functional Features

• Synchronous counting: The 74F189PC performs counting operations based on the clock input, ensuring synchronized and accurate results.
• Parallel load capability: It allows for loading a specific count value in parallel, providing flexibility in initial count configuration.
• Carry input and output: The carry input and output pins enable cascading multiple counters for extended counting ranges.
• Terminal count output: The terminal count pin indicates when the counter reaches its maximum count value, facilitating control in various applications.

Advantages and Disadvantages

Advantages: - High-speed operation suitable for time-critical applications. - Low power consumption contributes to energy-efficient designs. - Synchronous counting ensures accurate and reliable results. - Parallel load capability provides flexibility in count initialization.

Disadvantages: - Limited counting range (4-bit binary counter). - Requires external components for cascading multiple counters.

Working Principles

The 74F189PC operates based on synchronous counting principles. It utilizes the clock input to increment the count value by one on each rising edge of the clock signal. The count value is stored internally and can be accessed through the output pins. The IC also supports parallel loading of a specific count value, enabling flexible initialization.

Application Field Plans

The 74F189PC finds application in various fields, including: 1. Digital frequency dividers 2. Timekeeping circuits 3. Industrial automation systems 4. Communication equipment 5. Microcontroller-based projects

Alternative Models

Several alternative models with similar functionalities are available in the market. Some notable alternatives to the 74F189PC include: - SN74LS169B - CD40193BE - MC14516BCP

These alternatives offer similar synchronous counting capabilities and can be considered based on specific project requirements.

In conclusion, the 74F189PC is a versatile synchronous binary counter IC commonly used in digital electronics. Its high-speed operation, low power consumption, and flexible counting features make it suitable for various applications in different fields.

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