ON Semiconductor MC14490 Hex Contact Bounce Eliminator

The MC14490 by ON Semiconductor is a versatile and essential component designed to eliminate the mechanical contact bounce in digital systems. This integrated circuit (IC) is particularly beneficial for applications that require high reliability and precision when interpreting signals from mechanical switches or relay contacts.

Key Features

• Debouncing Capability: The MC14490 provides six independent channels of debouncing, making it suitable for applications with multiple input signals that need to be cleaned of any spurious noise or bounce.
• Supply Voltage Range: It operates over a wide supply voltage range from 3V to 18V, ensuring compatibility with various logic families and system requirements.
• Direct LED Drive: Each channel of the MC14490 can directly drive an LED, offering visual feedback or status indication without the need for additional driver components.
• Flexibility: The IC can be used with both momentary and maintained contact switches, providing flexibility for a broad range of applications.

Applications

The MC14490 is ideal for a multitude of applications where contact bounce could lead to erroneous signal interpretation. Some common applications include:

• Keyboard interfaces
• Alarm systems
• Industrial controls
• Automotive controls
• Logic systems where switch bounce is problematic

Technical Specifications

With a maximum operating temperature range of -55°C to +125°C, the MC14490 can withstand harsh environments, ensuring reliable performance across various conditions. The IC also features a typical bounce elimination time of 20ms, which is sufficient to handle most mechanical switch bounce scenarios.

Package and Quality

ON Semiconductor offers the MC14490 in a DIP (Dual In-line Package) for easy integration into through-hole PCB designs. The product adheres to stringent quality standards, ensuring that each IC maintains ON Semiconductor's reputation for reliability and performance.

In summary, the MC14490 Hex Contact Bounce Eliminator from ON Semiconductor is an invaluable component for any designer looking to improve the integrity of their digital input signals, offering a simple and effective solution to combat the age-old problem of contact bounce.