Encyclopedia Entry: 74AC169PC

Product Overview

Category

The 74AC169PC belongs to the category of integrated circuits (ICs) and specifically falls under the family of synchronous counters.

Use

This IC is commonly used in digital electronics for counting and sequencing applications. It is designed to provide a reliable and efficient solution for various digital circuit designs.

Characteristics

• Synchronous operation: The 74AC169PC operates synchronously with an external clock signal, ensuring accurate counting and sequencing.
• High-speed performance: This IC offers fast operation, making it suitable for applications that require quick counting or sequencing.
• Low power consumption: It is designed to consume minimal power, making it energy-efficient.
• Wide operating voltage range: The 74AC169PC can operate within a wide voltage range, providing flexibility in different circuit designs.

Package and Quantity

The 74AC169PC is available in a standard DIP (Dual In-line Package) format. Each package contains one IC.

Specifications

• Supply Voltage Range: 2V to 6V
• Maximum Clock Frequency: 125 MHz
• Number of Counting Bits: 4
• Operating Temperature Range: -40°C to +85°C
• Logic Family: Advanced CMOS (AC)

Pin Configuration

The 74AC169PC has a total of 16 pins, each serving a specific function. Here is the detailed pin configuration:

1. CP (Clock Pulse): Input pin for the external clock signal.
2. P0-P3 (Parallel Data Inputs): These pins receive the parallel data inputs for counting.
3. PE (Parallel Enable): When this pin is high, the parallel data inputs are enabled.
4. TC (Terminal Count): Output pin indicating the terminal count condition.
5. MR (Master Reset): When this pin is low, it resets the counter to its initial state.
6. Q0-Q3 (Outputs): These pins provide the binary count output.

Functional Features

• Synchronous Counting: The 74AC169PC performs synchronous counting, ensuring accurate and reliable results.
• Parallel Loading: It allows parallel loading of data, enabling flexibility in setting the initial count value.
• Terminal Count Output: The TC pin provides an output signal when the counter reaches its maximum count value.
• Master Reset: The MR pin allows resetting the counter to its initial state.

Advantages and Disadvantages

Advantages

• High-speed operation enables efficient counting and sequencing.
• Low power consumption makes it energy-efficient.
• Wide operating voltage range provides flexibility in different circuit designs.
• Synchronous operation ensures accurate counting results.

Disadvantages

• Limited counting bits (4 bits) may not be suitable for applications requiring larger count ranges.
• Availability in DIP package limits compatibility with surface mount technology (SMT) designs.

Working Principles

The 74AC169PC operates based on synchronous counting principles. It counts the number of clock pulses received at the CP input and generates a binary count output on the Q0-Q3 pins. The counter can be loaded with an initial count value through the parallel data inputs (P0-P3). The terminal count output (TC) indicates when the counter reaches its maximum count value. The master reset (MR) pin allows resetting the counter to its initial state.

Application Field Plans

The 74AC169PC finds application in various digital circuits that require counting and sequencing capabilities. Some potential application fields include: - Digital frequency dividers - Time delay generators - Event counters - Sequence generators

Alternative Models

There are several alternative models available in the market that offer similar functionality to the 74AC169PC. Some popular alternatives include: - 74HC169: This IC is compatible with the HC logic family and operates at a lower voltage range. - CD40193: A CMOS counter IC with similar functionality but different pin configuration. - 74LS169: This IC operates at a lower clock frequency but offers compatibility with the LS logic family.

In conclusion, the 74AC169PC is a versatile synchronous counter IC that provides accurate counting and sequencing capabilities. Its high-speed operation, low power consumption, and wide operating voltage range make it suitable for various digital circuit designs. However, its limited counting bits and DIP package may pose limitations in certain applications.