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SN74LS02N. SN74LS02NSR. ACTIVE. SO. NS. Green (RoHS. & no Sb /Br). CU NIPDAU. LevelC-UNLIM. 0 to 74LS Lead Small Outline Integrated Circuit (SOIC), JEDEC MS, Narrow 74LS Absolute Maximum Ratings(Note 1). Note 1: The “Absolute Maximum . Details, datasheet, quote on part number: 74LS02 SRP High Speed Current Mode PWM Control IC for Switching Power Supply. HD 4-bit And/or.

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Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even. The description for each pin is given below.

The chip has four NOR gates in it. In the circuit two transistors are connected to form a NOR gate. Now let us consider a few states: The chip is available in different packages and is chosen depending on requirement. When one of buttons is pressed.

After verifying the three states, you can tell that we have satisfied the above truth table. In that state the current flow through base of both transistors will be zero.

Output of the gate is taken out from joint collector of both transistors. The chip also provides TTL outputs which are a must in some systems. Submitted by admin on 5 April Both transistors will be ON and voltage across dztasheet of them will be zero.


When both buttons are not pressed. When both buttons are pressed.

Because of this the chip can be used high speed applications. The two inputs are driven out from bases of two transistors.

7402 – 7402 Quad 2-Input NOR Gate Datasheet

No abstract text available Text: Has buffered outputs, improving the output transition characteristics. With that the total drop across both transistors will be zero.

Using continuously under heavy loads. Like this we can use each gate of the chip depending on requirement. For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. They are also plug in replace ments for LSTTL devices giving avalue of the IC ‘s internal equivalent capacitance which is calculated from the operating current.

(PDF) 74LS02 Datasheet download

And if your project doesn’t require a specific brand of ICselect from thedoesn’t require a specific brand of ICselect from the functionally equivalent Jameco Value Offering. TL — Programmable Reference Voltage.

The four NOR gates in the chip mentioned earlier are connected internally as shown below. Because transistor drop is zero Y1 will be LOW. The chipis basically used when NOR logic function is required. Here are a few cases why it is used. When you want logic inverter.


74LS02 datasheet & applicatoin notes – Datasheet Archive

The buttons are connected to change the logic of inputs. Using continuously under heavy loadsns Per input: It is really popular and is available everywhere.

This output is connected to a LED trough a current limiting resistor. We can use one or all gates. The internal circuit is composed of 3 stages, including. This LED is connected to detect the state of output. VCC-Connected to positive voltage to provide power to all four gates. Previous 1 2 Where high speed NOR operation is necessary. LIIF netlist writer version 4.

With them the switching delays of datasneet are minimized. They are also plug in replace ments for LSTTL devices giving a reductionC pd n pd isdelined as the value otthe IC ‘s internal equivalent capacitance which is calculated. Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in ICcurrent Per input: These two inputs are connected to buttons.