74LS Absolute Maximum Ratings(Note 1). Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be. 74LS02 is a LOGIC GATE IC and member of 74XXYY IC series which are logic Where to use 74LS02 IC 74LS02 NOR Gate IC Datasheet. 74LS02 datasheet, 74LS02 pdf, 74LS02 data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, Quad 2-Input NOR Gate.

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No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without.

Tokyo 03 Fax: It is really popular and is available everywhere. In the circuit two transistors are connected to form a NOR gate. The four NOR gates in the chip mentioned earlier are connected internally as shown below. We can use one or all gates. The buttons are connected to change the logic of inputs. The chip also provides TTL outputs which are a must in some systems.

Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. The two inputs are driven out from bases of two transistors. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.

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The chip has four NOR gates in it. Now let us consider a few states: This product is not designed to be radiation resistant. Hitachi makes every attempt to ensure that its products are of high quality and reliability. Output of the gate is taken out from joint collector of both transistors. Tun-Hwa North Road, Taipei When both buttons are pressed. TL — Programmable Reference Voltage. Here are a few cases why it is used.

For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. Confirm that you have. Copyright ‘ Hitachi, Ltd. Because transistor drop is zero Y1 will be LOW. The chip is available in different packages and is chosen depending on requirement. Hitachi Semiconductor America Inc. Confirm that you have received the latest product standards or specifications before final design, purchase or use.

This LED is connected to detect the state of output. Like this we can use each gate of the chip depending on requirement.

SNLS02 Datasheet(PDF) – ON Semiconductor

When you want logic inverter. Hitachi Asia Hong Kong Ltd.

Where high speed NOR operation is necessary. After verifying the three states, you can tell that we have satisfied the above truth table. When both buttons are not pressed.

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VCC-Connected to positive voltage to provide power to all four gates. For further information write to: Both transistors will be ON and voltage across both of them will be zero. Hitachi bears no responsibility for failure or damage when used. The description for each pin is given below.

74LS02 Datasheet

Products and product specifications may be subject to change without notice. In that state the current flow through base of both transistors will be zero. With that the total drop across both transistors will be zero.

Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly. With them the switching delays of gates are minimized. The chipis basically used when NOR logic function is required.

These two inputs are connected to buttons. Because of this the chip can be used high speed applications.