74LS02 DATASHEET PDF

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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Search Results for 74LS02 : 2 documents found

These two inputs are connected to buttons. Hitachi bears no responsibility for failure or damage when used.

The chip also provides TTL outputs which are a must in some systems. Fatasheet North Road, Taipei When both buttons are not pressed. Output of the gate is taken out from joint collector of both transistors. VCC-Connected to positive voltage to provide power to all four gates. The chipis basically used when NOR logic function is required.

For further information write to: Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail- safes, so 74ld02 the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.

Copyright ‘ Hitachi, Ltd. This output is connected to a LED trough a current limiting resistor. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. In the circuit two transistors are connected to form a NOR gate. The chip is available in different packages and is chosen depending on requirement. Here are a few cases why it is used. When both buttons are pressed.

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Hitachi Semiconductor America Inc. Even within the guaranteed ranges, consider normally foreseeable.

The two inputs are driven out from bases of two transistors. When you want logic inverter. Confirm that you have received the latest product standards or specifications before final design, purchase or use. With that the total drop across both transistors will be zero.

With them the switching delays of gates are minimized. Like this we can use each gate of the chip depending on requirement. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without. The chip has four NOR gates in it. This product is not designed to be radiation resistant.

After verifying the three states, you can tell that we have satisfied the above truth table. Because of this the chip can be used high speed applications. Because transistor drop is zero Y1 will be LOW. TL — Programmable Reference Voltage.

Submitted by admin on 5 April Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. Where high speed NOR operation is necessary. The description for each pin is given below.

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Now let us consider a few states: Design your application so that the product is used within the ranges guaranteed by Hitachi particularly.

The buttons are connected to change the logic of inputs. Products and product specifications may be subject to change without notice. This LED is connected to detect the state of output. Hitachi Asia Daatsheet Kong Ltd. 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.

Tokyo 03 Fax: In that state the current flow through base of both transistors will be zero.

Both transistors will be ON and voltage across both of them will be zero. The four NOR gates in the chip mentioned earlier are connected internally as shown below. Hitachi makes every attempt to ensure that its products are of high quality and reliability.

Confirm that you have.

74LS02 Datasheet

For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. It is really popular and is available everywhere. We can use one or all gates. When one of buttons is pressed.