you start from the notch of the I.C and then you go anti clockwise making the pin at the bottom of the notch 1 and the pin above the notch 14 .
To identify pin connections on an AND gate IC chip, refer to the datasheet provided by the manufacturer. The datasheet will have a pinout diagram showing the location and function of each pin on the chip. Additionally, you can use a multimeter to test for continuity between pins to confirm their connections.
read the datasheet or databook entry for the chip. there is no other reliable way.
IC 7402 is different from the other type of IC like 7404,7408,7432 and 7400 when it is connected to have an output desired... if you noticed all i mentioned ic is connected from left to the right. input pin 1 and 2, output pin 3 input pin 4 and 5, output pin 6 input pin 13 and 12, output pin 11 input pin 10 and 9, output pin 8 while in nor gate, to have the desired output it must be connected from right to left... input pin 2 and 3, output pin 1 input pin 5 and 6, output pin 4 input pin 8 and 9, output pin 10 input pin 11 and 12, output pin 13
The PIN (Pin Identification Number) of a 3-input OR gate typically refers to the specific pin configuration for that gate in a circuit or on an integrated circuit (IC) package. For a standard 3-input OR gate, it usually has three input pins and one output pin. The exact pin configuration can vary depending on the manufacturer and the specific IC, so it's important to refer to the datasheet for that component for accurate pin assignments. In general, the output pin will be labeled as 'Y' or similar, while the input pins are labeled as 'A', 'B', and 'C'.
Pin 1 of the IC7402 is an output pin because it is part of a quad 2-input NOR gate configuration. Each NOR gate within the IC has specific input and output pins, and pin 1 corresponds to the output of the first NOR gate. The output pin provides the logical result of the NOR operation performed on the two input signals connected to the associated input pins.
Reserve pin fool proves the connection by allowing the connection only in a single way.
the no connection pin may be used in future or it may be used for interfacing the external devices.
this shows you everything you need about them Pin Number Description 1 A Input Gate 1 2 B Input Gate 1 3 Y Output Gate 1 4 A Input Gate 2 5 B Input Gate 2 6 Y Output Gate 2 7 Ground 8 Y Output Gate 3 9 B Input Gate 3 10 A Input Gate 3 11 Y Output Gate 4 12 B Input Gate 4 13 A Input Gate 4 14 Positive Supply
F6 Trim means that STEM, BODY seating surface, GATE seating surface, bushing (or a deposited weld), for the backseat and stem hole guide, small internal parts that normally contact the service fluid, excluding the pin that is used to make a stem-to-gate connection (this pin shall be made of an austenitic stainless steel material) are made of a 13Cr material (typical specification type ASTM A276T410 or T420). See API STD 600 - 2009.
F6 Trim means that STEM, BODY seating surface, GATE seating surface, bushing (or a deposited weld), for the backseat and stem hole guide, small internal parts that normally contact the service fluid, excluding the pin that is used to make a stem-to-gate connection (this pin shall be made of an austenitic stainless steel material) are made of a 13Cr material (typical specification type ASTM A276T410 or T420). See API STD 600 - 2009.
there is a part of the circle that is straight. the pin closest to that straight part is negative
The best way to identify an old fraternal pin is to check online. Look for any marks, like names or symbols that can be identified.