The Popular Integrated Circuits in KICAD

This article is made to help people who are beginners in KICAD to recognize some available ICs in KICAD which can be used in their future projects.

At the first, we should know what are the most common ICs which are used in the real life like:

- 555 timer.

- Operational Amplifiers.

- 74xx of series logic chips.

- Voltage regulators

- Audio Amplifiers.

Secondly, you have to make a new schematic. Then, chose place symbol and click anywhere in the white area of the schematic window.

Step 1: 555 TIMER

First one is the 555 TIMER.

The 555 timer IC is an integrated circuit (chip) used in a variety of timer, delay, pulse generation, and oscillator applications. Derivatives provide two (556) or four (558) timing circuits in one package. It was commercialized in 1972 by Signetics and it was reported to still be in wide use as of 2013.

· So if we just searched about 555 timer. There is a lot of types.
And the most common one is NE555.

Step 2: Operational Amplifier

An operational amplifier commonly known as op-amp is a two-input single-output differential voltage amplifier which is characterized by high gain, high input impedance and low output impedance.

The operational amplifier is called so because it has its origins in analog computers, and was mainly used to perform mathematical operations. Depending on its feedback circuit and biasing, an op-amp can be made to add, subtract, multiply, divide, negate, and interestingly even perform calculus operations like differentiation and integration.

Operational amplifiers can be used in construction of active filters, providing high-pass, low-pass, band-pass, band-reject and delay functions.

When we search about Op-Amp, we will find a lot of types. And the most common one is LM741.

Step 3: 74xx Series of Logic Chips

·There is a lot types of families in the 74xx ICs. So I will just mention some of them which are needed in most of some logic circuits.

The 7400 series of integrated circuits (ICs) were one of the most popular logic families of transistor–transistor logic (TTL) logic chips. In 1964, Texas Instruments introduced the first members of their ceramic semiconductor package series, the SN5400s. A low-cost plastic package SN7400 series was introduced in 1966 which quickly gained over 50% of the logic chip market, and eventually becoming de facto standardized electronic components.Over the decades, many generations of pin-compatible descendant families evolved to include support for low power CMOS technology, lower supply voltages, and surface mount packages.

Step 4: AND GATE

The AND gate is a basic digital logic gate that implements logical conjunction - it behaves according to the truth table to the right. A HIGH output (1) results only if all the inputs to the AND gate are HIGH (1). If none or not all inputs to the AND gate are HIGH, a LOW output results. The function can be extended to any number of inputs.

This IC has 4 AND gates inside and each of them are quad-2 inputs.(unit A,B,C and D)

Step 5: OR GATE

The OR gate is a digital logic gate that implements logical disjunction – it behaves according to the adjacent truth table. A HIGH output (1) results if one or both the inputs to the gate are HIGH (1). If neither input is high, a LOW output (0) results. In another sense, the function of OR effectively finds the maximum between two binary digits, just as the complementary AND function finds the minimum.

The same thing, four quad-2 inputs of OR gates in KICAD.

Step 6: INVERTER GATE

the inverter is an electronic circuit that produces an inverted version of the input at its output.

Step 7: NAND GATE

A NAND gate is an inverted AND gate.

Step 8: NOR GATE

it is the inverter gate of OR gate.

NOTE ‼ You have to know that there are more and more of these types
of these logic ICs which maybe you will use it in advanced level.

Step 9: AUDIO AMPLIFIER

An audio power amplifier (or power amp) is an electronic amplifier that amplifies low-power electronic audio signals such as the signal from radio receiver or electric guitar pickup to a level that is high enough for driving loudspeakers or headphones. Audio power amplifiers are found in all manner of sound systems including sound reinforcement, public address and home audio systems and musical instrument amplifiers like guitar amplifiers. It is the final electronic stage in a typical audio playback chain before the signal is sent to the loudspeakers.

Audio amp's Important applications include public address systems, theatrical and concert sound reinforcement systems, and domestic systems such as a stereo or home-theater system. Instrument amplifiers including guitar amplifiers and electric keyboard amplifiers also use audio power amplifiers.

There Is a lot of types in KICAD. For example we will choose the LM386 which is low voltage amplifier used in AM-FM radios and TV sound systems.

Step 10: REFRENCES

References.

1. https://arduinoinfo.mywikis.net/wiki/Popular-ICs

2. https://www.futurlec.com/74LS/74LS08.shtml

3. http://ee-classes.usc.edu/ee459/library/datasheets/DM74LS32.pdf

4. http://ee-classes.usc.edu/ee459/library/datasheets/DM74LS32.pdf

5. http://ecelabs.njit.edu/student_resources/datas/74ls00.pdf

6. http://ecelabs.njit.edu/student_resources/datas/74ls00.pdf