CD4518BM

Product Overview

• Category: Integrated Circuit
• Use: Counter/Divider
• Characteristics: High-speed operation, low power consumption
• Package: 16-pin DIP (Dual In-line Package)
• Essence: Binary counter/divider with synchronous reset
• Packaging/Quantity: Available in tubes of 25 units or reels of 2,500 units

Specifications

• Supply Voltage: 3V to 18V
• Operating Temperature: -55°C to +125°C
• Input Voltage: 0V to VDD
• Output Voltage: 0V to VDD
• Propagation Delay Time: 60ns (typical)
• Maximum Clock Frequency: 12MHz

Detailed Pin Configuration

The CD4518BM has a total of 16 pins. Here is the detailed pin configuration:

1. Pin 1: Clock Input A
2. Pin 2: Clock Input B
3. Pin 3: Enable Input
4. Pin 4: Reset Input
5. Pin 5: Output Q0
6. Pin 6: Output Q1
7. Pin 7: Output Q2
8. Pin 8: Output Q3
9. Pin 9: Carry Output
10. Pin 10: Borrow Output
11. Pin 11: Ground (GND)
12. Pin 12: Output Q4
13. Pin 13: Output Q5
14. Pin 14: Output Q6
15. Pin 15: Output Q7
16. Pin 16: Supply Voltage (VDD)

Functional Features

• Synchronous counting and dividing
• Reset function for immediate clearing of outputs
• Carry and borrow outputs for cascading multiple counters
• Wide operating voltage range
• Low power consumption

Advantages and Disadvantages

Advantages

• High-speed operation allows for efficient counting and dividing tasks
• Low power consumption makes it suitable for battery-powered applications
• Synchronous reset enables immediate clearing of outputs
• Wide operating voltage range provides flexibility in various systems

Disadvantages

• Limited maximum clock frequency of 12MHz may not be sufficient for some high-speed applications
• Only available in a 16-pin DIP package, which may not be compatible with all circuit designs

Working Principles

The CD4518BM is a binary counter/divider that operates based on the clock inputs (A and B). It counts up or down depending on the clock input signals and can be reset to its initial state using the reset input. The outputs (Q0-Q7) represent the current count value, while the carry and borrow outputs allow for cascading multiple counters.

Detailed Application Field Plans

The CD4518BM can be used in various applications that require counting or dividing functions. Some potential application fields include:

1. Frequency dividers in communication systems
2. Timekeeping circuits in digital clocks
3. Event counters in industrial automation
4. Pulse generation in electronic instruments
5. Sequential control in automotive electronics

Detailed and Complete Alternative Models

• CD4518BCN: Same functionality as CD4518BM but available in a 16-pin PDIP (Plastic Dual In-line Package)
• CD74HC4018E: High-speed CMOS logic counter/divider with similar features
• CD4029BE: Presettable up/down counter with parallel load capability

These alternative models offer similar functionalities and can be considered as replacements for the CD4518BM in different applications.

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