MC14490DWR2G

Specialty Logic Overview

The MC14490DWR2G is a hex contact bounce eliminator constructed with complementary MOS enhancement mode devices. It eliminates extraneous level changes from mechanical contacts by generating a clean digital signal four clock periods after input stabilization. The device features an internal R-C oscillator requiring only one external capacitor, or accepts an external clock source. It includes diode protection on all inputs, internal pullups on data inputs, and TTL-compatible I/O. The package is SOIC-16 (DW suffix) and operates within a supply voltage range of 3.0 V to 18 V.

Specialty Logic Feature Summary

• Hex configuration providing six independent debouncers per package
• Internal pullup resistors on all data inputs for switched ground compatibility
• Schmitt trigger on the clock input pin for slow edge tolerance
• Cascadable architecture enabling longer time delays and multiple timing signals

Specialty Logic Applications

• Elimination of mechanical contact bounce in relay and push-button interfaces
• Digital integrator applications requiring asymmetrical timing control
• System synchronizer circuits using single-line input signals
• Delay line generation for programming other timing operations

Specialty Logic Procurement Notes

Verify the specific ordering suffix to confirm the package type and shipping quantity. The 'DW' suffix indicates the SOIC-16 wide package. Confirm RoHS compliance status and Pb-Free designation as required by project specifications. Ensure the component meets AEC-Q100 qualification if automotive application requirements are necessary.

Specialty Logic Selection Notes

Select this component when interfacing directly with mechanical switches or relays without requiring Form C inputs. Choose the internal oscillator mode for simplified designs needing only one external capacitor. Consider cascading capabilities if extended delay times or multiple synchronized outputs are required for the system logic.

Specialty Logic Part Context

This part belongs to the MC14490 series of hex contact bounce eliminators manufactured by onsemi. It is designed for CMOS logic families and provides a robust solution for cleaning noisy digital signals derived from physical switching mechanisms. The device integrates both the timing generation and the debouncing logic into a single integrated circuit.

Specialty Logic Replacement Considerations

MC14490DWR2 is a direct substitute but lacks RoHS compliance.