MC14490DW - Brand New onsemi Special Logic ICs
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Brand:onsemi
Category:Special Logic ICs
Chipdatas Part No.:CD90-MC14490DW
Manufacturer Part No.:MC14490DW
Datecode:09+
Package:SSOP-16
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Description
The MC14490DW is a special logic IC that is designed for the elimination of extraneous level changes when interfacing with mechanical contacts. It is constructed with complementary MOS enhancement mode devices and features a digital contact bounce eliminator circuit. This circuit takes an input signal from a bouncing contact and generates a clean digital signal four clock periods after the input has stabilized. The MC14490DW can remove bounce on both the "make" and the "break" of a contact closure. It can be used as a digital integrator, system synchronizer, or delay line. The chip has diode protection on all inputs, six debouncers per package, and internal pullups on all data inputs. It also has an internal R-C oscillator for clock operation, but can also be driven from an external clock source or the oscillator of another MC14490DW. The MC14490DW is TTL compatible and has single line input, making it suitable for various applications.Specifications and features
- Diode Protection on All Inputs - Six Debouncers Per Package - Internal Pullups on All Data Inputs - Can Be Used as a Digital Integrator, System Synchronizer, or Delay Line - Internal Oscillator (R-C), or External Clock Source - TTL Compatible Data Inputs/Outputs - Single Line Input, Debounces Both "Make" and "Break" Contacts - Does Not Require "Form C" (Single Pole Double Throw) Input Signal - Cascadable for Longer Time Delays - Schmitt Trigger on Clock Input (Pin 7) - Supply Voltage Range = 3.0 V to 18 V - Chip Complexity: 546 FETs or 136.5 Equivalent GatesApplication Scenarios
The MC14490DW is suitable for use in systems that require the elimination of extraneous level changes when interfacing with mechanical contacts. It can be used in various applications such as digital integrators, system synchronizers, or delay lines. Its diode protection on all inputs and internal pullups on all data inputs make it reliable and versatile for different scenarios.Comparison
Advantages- Eliminates extraneous level changes when interfacing with mechanical contacts - Removes bounce on both "make" and "break" of a contact closure - Can be used as a digital integrator, system synchronizer, or delay line - Diode protection on all inputs for added reliability - Internal pullups on all data inputs for convenienceDisadvantages- Requires external capacitor for adjusting operating frequency (bounce delay) - May need additional components for cascading longer time delays - Limited supply voltage range (3.0 V to 18 V) -
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Additional Information
- Datasheet: Download MC14490DW
- Chipdatas Part: CD90-MC14490DW
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/03 09:33 +0800
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