CD4018BE

Product Overview

• Category: Integrated Circuit (IC)
• Use: Counter/Divider
• Characteristics:
  • 8-bit synchronous counter with parallel load
  • Low power consumption
  • Wide operating voltage range
  • High noise immunity
• Package: DIP-16 (Dual In-line Package, 16 pins)
• Essence: The CD4018BE is a versatile counter/divider IC that can be used in various digital applications.
• Packaging/Quantity: Available in tubes or reels, with 25 pieces per tube/reel.

Specifications

• Supply Voltage Range: 3V to 18V
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 5MHz
• Maximum Counting Range: 256 (2^8)

Pin Configuration

The CD4018BE has 16 pins arranged as follows:

┌───┬───┐ 1 │ │ 16 │ │ 2 │ │ 15 │ │ 3 │ │ 14 │ │ 4 │ │ 13 │ │ 5 │ │ 12 │ │ 6 │ │ 11 │ │ 7 │ │ 10 │ │ 8 │ │ 9 └───┴───┘

Functional Features

• Synchronous counting with parallel load capability
• Reset function to clear the counter
• Carry output for cascading multiple counters
• Enable input to control counting operation
• Schmitt trigger inputs for improved noise immunity

Advantages and Disadvantages

Advantages

• Versatile and widely used in digital applications
• Low power consumption makes it suitable for battery-powered devices
• Wide operating voltage range allows compatibility with various systems
• High noise immunity ensures reliable operation in noisy environments

Disadvantages

• Limited counting range (up to 256)
• Requires external components for more complex operations
• Not suitable for high-frequency applications

Working Principles

The CD4018BE is a synchronous counter that counts up or down based on the clock input. It can be loaded with a parallel value using the load input, and the count can be reset using the reset input. The carry output allows cascading multiple counters to achieve larger counting ranges.

Detailed Application Field Plans

The CD4018BE can be used in various digital applications, including:

1. Frequency division: Dividing an input frequency by a specific factor.
2. Event counting: Counting the occurrence of specific events.
3. Time delay generation: Generating precise time delays.
4. Address decoding: Decoding addresses in memory or peripheral systems.
5. Sequence generation: Generating specific sequences of outputs.

Alternative Models

Here are some alternative models that can be used as replacements for the CD4018BE:

1. CD4020BE: 14-bit binary counter/divider.
2. CD4518BE: Dual BCD up-counter.
3. CD74HC4018E: High-speed CMOS 8-stage presettable synchronous down counter.

These alternatives offer similar functionalities and can be used depending on specific requirements.

In conclusion, the CD4018BE is a versatile counter/divider IC with various applications in digital systems. Its low power consumption, wide operating voltage range, and high noise immunity make it a popular choice among designers. However, its limited counting range and need for external components should be considered when selecting this IC for a particular application.