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How do you identify the pins of an IC package?
DIP IC Pin Numbering IC pins are all numbered, e.g. pin 1, pin 2, pin 3, etc. On a DIP IC, a half-circle will show at which end of the IC pin 1 is. Pin 1 may also be marked by a dot next to pin 1. With the dot or half-circle on the left, pin 1 of a DIP IC will always be the bottom left pin.
What are the pins on ICs?
By convention, the pins on an IC are numbered counterclockwise, starting with the upper-left pin closest to the clocking mark. So, for example, with the clocking notch orienting the chip at the 12 o’clock position, the pins of a 14-pin IC are numbered 1 through 7 down the left side and 8 through 14 up the right side.
How do I find my IC code?
Read the serial number from the top side of the IC. The top side of the IC is facing up when the chip is standing on its pins. You may require a magnifying glass while reading the IC serial information. Open your Internet browser and enter the IC’s serial number into either the Google or Yahoo search engines.
How many pin does IC 74LS02 have?
14 Pin
The 74LS02 is a 14 Pin Quad 2-Input NOR Gate IC. NOR gates utilize advanced silicon-gate CMOS technology to achieve operating speeds similar to HC gates with the low power consumption of standard CMOS integrated circuits.
How are IC named?
A lot of IC names are rather arbitrary: typically a prefix indicating manufacturer or series, and a number. However, in the case of that particular chip (and discrete logic chips in general), the name tells you a lot. The “SN” is a prefix specific to TI. The “74” indicates a 7400 series logic devices.
How do I know if I have a bad IC?
Touch the IC with your finger just by starting the voltage supply to it. Notice if the IC is getting heat up as it naturally gets or if you are not able to touch it after few 10-12 seconds. If the ic is getting heat up extremely faster then the IC is surely to be damaged.
What is an electronic datasheet?
A datasheet is a document, printed or electronic that provides details about a product, like a computer, computer component, or software program. The datasheet includes information that helps in making a buying decision about a product by providing technical specifications about the product.
Where is the pin 1 on an IC?
The white strip on the left side of the picture looks like a similar indicator to the notch in most ICs, hence pin 1 would be on the bottom-left of the supplied picture. Chips are marked various ways, but the conventions are pretty universal.
How can you tell if a chip has pin 1?
Sometimes a chip has a notched corner to indicate where pin 1 lives. The white silkscreen on the circuit board shows an exaggerated picture of this notching, by the lower-left corner. The 486 is a good example of a chip with a notched corner, while the 68030 has a gold stripe to indicate pin 1.
What does pin 1 mean on a circuit board?
Pin 1 is clearly marked with an arrow on the circuit board. If the chip were loose it would be a little less clear because not only is there a dot by pin 1, but there is also apparently a dot by the opposite corner. It may be just a coincidental mold mark, but it’s still potentially confusing. And here, a simple dot to indicate the orientation.
Where does pin 1 go in a picture?
In your picture, pin 1 is therefore in the lower left corner with numbers proceeding to the right accross the bottom row, then from right to left along the top row. Again, think of going around counter-clockwise when viewed from the top starting at some uniquely marked gap.