MC74AC161DG

Product Overview

Category: Integrated Circuit (IC)

Use: The MC74AC161DG is a synchronous presettable binary counter that belongs to the MC74AC series of integrated circuits. It is commonly used in digital electronic systems for counting and sequencing operations.

Characteristics: - Synchronous operation - Presettable counter - High-speed performance - Low power consumption - Wide operating voltage range

Package: The MC74AC161DG is available in a 16-pin dual in-line package (DIP) format, which allows for easy integration into circuit boards.

Essence: This IC is designed to provide reliable and efficient counting functionality in various digital applications.

Packaging/Quantity: The MC74AC161DG is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

The specifications of the MC74AC161DG are as follows:

• Supply Voltage Range: 2.0V to 6.0V
• Operating Temperature Range: -40°C to +85°C
• Maximum Clock Frequency: 125 MHz
• Maximum Counting Range: 4-bit binary (0 to 15)
• Input Logic Levels: CMOS/TTL compatible
• Output Logic Levels: CMOS/TTL compatible

Pin Configuration

The pin configuration of the MC74AC161DG is as follows:

```

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| | -|1 16|- VCC -|2 15|- Q0 -|3 14|- Q1 -|4 13|- Q2 -|5 12|- Q3 -|6 11|- MR (Master Reset) -|7 10|- CP (Clock Pulse) -|8 9|- PE (Preset Enable) |_______| ```

Functional Features

The MC74AC161DG offers the following functional features:

• Synchronous counting: The counter advances on each clock pulse, ensuring accurate and synchronized counting.
• Presettable functionality: The counter can be preset to any desired value using the preset enable (PE) input.
• Master reset: The master reset (MR) input allows for immediate resetting of the counter to its initial state.
• High-speed performance: The IC operates at a maximum clock frequency of 125 MHz, enabling rapid counting operations.
• Low power consumption: The MC74AC161DG is designed to minimize power consumption, making it suitable for battery-powered devices.

Advantages and Disadvantages

Advantages: - Synchronous operation ensures accurate counting in digital systems. - Presettable functionality allows for flexible counting configurations. - High-speed performance enables efficient counting operations. - Low power consumption prolongs battery life in portable devices.

Disadvantages: - Limited counting range (4-bit binary) may not be sufficient for certain applications requiring larger counters. - Lack of built-in error detection or correction mechanisms.

Working Principles

The MC74AC161DG operates based on synchronous binary counting principles. It counts up by one on each rising edge of the clock pulse (CP) input. The counter can be preset to a specific value using the preset enable (PE) input. The master reset (MR) input resets the counter to its initial state when activated.

Detailed Application Field Plans

The MC74AC161DG finds applications in various digital systems, including but not limited to: - Digital clocks and timers - Frequency dividers - Industrial control systems - Data communication equipment - Automotive electronics

Alternative Models

Some alternative models that offer similar functionality to the MC74AC161DG include: - CD74AC161E - SN74AC161DG - 74HC161D

These alternative models can be considered based on specific requirements and availability.

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