CD4518BNSR

Product Overview

Category

CD4518BNSR belongs to the category of integrated circuits (ICs).

Use

The CD4518BNSR is a dual 4-bit binary up/down counter that can be used in various digital applications.

Characteristics

• Dual 4-bit binary up/down counter
• Wide operating voltage range: 3V to 18V
• Low power consumption
• High noise immunity
• Schmitt trigger inputs for improved noise rejection
• Directly drivable by TTL or CMOS logic levels

Package

The CD4518BNSR is available in a small outline package (SOIC) with a surface mount option.

Essence

The essence of CD4518BNSR lies in its ability to count up or down in binary format, making it suitable for applications requiring counting functionality.

Packaging/Quantity

The CD4518BNSR is typically packaged in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 3V to 18V
• Input Voltage Range: 0V to VDD
• Operating Temperature Range: -55°C to +125°C
• Maximum Clock Frequency: 5MHz
• Output Current: ±6mA

Detailed Pin Configuration

The CD4518BNSR has a total of 16 pins. The pin configuration is as follows:

1. Pin 1: Clock B Input
2. Pin 2: Clock A Input
3. Pin 3: Down/Up Control Input
4. Pin 4: Reset Input
5. Pin 5: Enable Input
6. Pin 6: Carry Output
7. Pin 7: Ripple Clock Output
8. Pin 8: Ripple Clock Input
9. Pin 9: Carry Input
10. Pin 10: Data Input D0
11. Pin 11: Data Input D1
12. Pin 12: Data Input D2
13. Pin 13: Data Input D3
14. Pin 14: Ground (GND)
15. Pin 15: VDD
16. Pin 16: Clock Enable Input

Functional Features

The CD4518BNSR offers the following functional features:

• Dual 4-bit binary up/down counter functionality
• Up or down counting mode selection using the Down/Up control input
• Reset input for clearing the counter
• Enable input for enabling or disabling the counter
• Carry output for cascading multiple counters
• Ripple clock input and output for synchronization purposes
• Schmitt trigger inputs for improved noise rejection

Advantages and Disadvantages

Advantages

• Wide operating voltage range allows for flexibility in various applications
• Low power consumption makes it suitable for battery-powered devices
• High noise immunity ensures reliable operation in noisy environments
• Direct compatibility with TTL or CMOS logic levels simplifies integration into existing systems

Disadvantages

• Limited maximum clock frequency of 5MHz may restrict its use in high-speed applications
• Lack of built-in presettable functionality limits its versatility in certain scenarios

Working Principles

The CD4518BNSR operates based on the principles of digital counting. It counts up or down depending on the state of the Down/Up control input. The clock inputs determine the timing of the counting process, while the enable input enables or disables the counter. The carry output allows for cascading multiple counters to achieve higher bit counts.

Detailed Application Field Plans

The CD4518BNSR can be applied in various fields, including but not limited to: - Digital frequency dividers - Industrial automation - Electronic gaming - Counting and sequencing circuits - Timekeeping and clock circuits

Detailed and Complete Alternative Models

Some alternative models to CD4518BNSR that offer similar functionality include: - CD4516BNSR: 4-bit binary up/down counter with presettable functionality - CD4029BNSR: 4-bit binary up/down counter with parallel load capability - CD74HC191E: 4-bit synchronous up/down counter with asynchronous clear

These alternative models provide additional features or variations in functionality, allowing for more specific application requirements.

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