1-9. Types of Noise to be Noted

Types of noise to be noted


Care should be exercised as to switching noise when using CMOS logic ICs. Major types of noise include:
(a) Switching noise (overshoot, undershoot, ground bounces)
(b) Signal reflection
(c) Crosstalk noise

See the figure below.  Each type of noise is detailed in the following subsections. These types of noise are caused by the output slew rate (di/dt or dv/dt) and the output trace. Care should also be taken as to electromagnetic interference (EMI) noise generated under multiple combined conditions and electromagnetic susceptibility (EMS) noise emitted by nearby electronic devices.

Usage Considerations of CMOS Logic ICs

1-1. Handling of Unused Input Pins
Details
1-2. Input Rise and Fall Time Specifications
Details
1-3. Multiple Outputs from a General-Purpose CMOS Logic IC Come Into Conflict (Short-Circuiting)
Details
1-4. Connecting a Load Capacitance to a CMOS Output Pin
Details
1-5. Calculating the Operating Supply Current and Power Dissipation
Details
1-6. Level Shifting Using an Input-Tolerant Function
Details
1-7. Example of Application of the Power-Down Protection Function (Partial Power-Down)
Details
1-8. Input-Tolerant and Output Power-Down Protection Functions Available with Each Series
Details
1-9-1. Countermeasures for Reducing Switching Noise
Details
1-9-2. Countermeasures for Signal Reflection
Details
1-9-3. Countermeasures for Crosstalk
Details
1-10. Countermeasures for Hazards
Details
1-11. Countermeasures for Metastability
Details
1-12. Countermeasures for Latch-Up
Details
1-13. Countermeasures for ESD Protection
Details

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