Table of Contents
IC Package:
Integrated circuits are available in the following three types of packing
1). Top hat ICPackage
2). Flat IC Package
3). Dual-in-Line IC Package
Top or To Hat IC Package
This IC package is available in up to 4 pins. In figure 8.21 (a), the 8-terminals package has been illustrated, which is called To-5. Metal “To” provides an electromagnetic shield to the IC chip. This type of shielding cannot be achieved through plastic or ceramic packages.
Figure 8.21
Flat IC Package
In figure (b), a flat IC package comprising 14 terminals has been illustrated. This IC package does not provide an electromagnetic shield to the chip. Contrary to “To”, this package can be installed on a circuit board quite easily.
Dual-in-Line Plastic IC Package
They have a very low price, and it is most vastly used in industries and consumer products, particularly in places where the temperature is low. It comprises a total of 14 pins; each side has 7 pins (figure c). Ceramic DIL can also be applied instead of plastic. A ceramic package is preferred over a plastic package in places where the temperature is high.
IC Symbol
IC has very simple symbols. It is normally denoted by a triangle or rectangular type symbol, as can be seen in figure 8.22. Remember that the internal circuit does not show in the symbol.
Figure 8.22
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