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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When one of buttons is pressed. With that the total drop across both transistors will be zero. Submitted by admin on 5 April Tun-Hwa North Road, Taipei It is really popular and is available everywhere. The chip has four NOR gates in it. This output is connected to a LED trough a current limiting resistor. Like this we can use each gate of datashewt chip depending on requirement.
In the circuit two transistors are connected to form a NOR gate. These two inputs are connected to buttons. 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 that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.
After verifying the three states, you can tell that we have satisfied the above truth table. VCC-Connected to positive voltage to provide power to all four gates.
In that state the current flow through base of both transistors will be zero. Because transistor drop is zero Y1 will be LOW. The description for each pin is given below. Now let us consider a few states: For further information write to: Because of this the chip can be used high speed applications. We can use one or all gates. Confirm that you have.
74LS02 Datasheet pdf – Quad 2-Input NOR Gate – Fairchild Semiconductor
This product is not designed to be radiation resistant. Hitachi bears no responsibility for failure or damage when used. This LED is connected to detect the state of output. Output of the gate is taken out from joint collector of both transistors.
Confirm that datasheeh have received the latest product standards or specifications before final design, purchase or use. The chipis basically used when NOR logic function is required. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without. Ddatasheet you want logic inverter.
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. When both buttons are pressed. TL — Programmable Reference Voltage. The buttons are connected to change the logic of inputs. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly.
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Copyright ‘ Hitachi, Ltd. Products and product specifications may be subject to change without notice. Here are a few cases why it is used. The chip is available in different packages and is chosen depending on requirement. Hitachi Semiconductor America Inc.
The two inputs are driven out from bases of two transistors. Where high speed NOR operation is necessary.
No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. Both transistors will be ON and voltage across both of them will be zero. Even within the guaranteed ranges, consider normally foreseeable. When both buttons are not pressed. Hitachi Asia Hong Kong Ltd.
The four NOR gates in the chip mentioned earlier dataasheet connected internally as shown below. For realizing the above truth table let us take dataxheet NOR gate and have it connected as shown below.
Hitachi makes every 74lls02 to ensure that its products are of high quality and reliability. Tokyo 03 Fax: The chip also provides TTL outputs which are a must in some systems. With them the switching delays of gates are minimized.