SN74LS02N. SN74LS02NSR. ACTIVE. SO. NS. Green (RoHS. & no Sb /Br). CU NIPDAU. LevelC-UNLIM. 0 to 74LS 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. Free 74LS02 semiconductor datasheets. Datasheet search.

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TL — Programmable Reference Voltage.

Output of the gate is taken out from dataeheet collector of both transistors. In the circuit two transistors are connected to form a NOR gate. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. This LED is connected to detect the state of output. This output is connected to a LED trough a current limiting resistor. Confirm that you have. When both buttons are pressed. When both buttons are not pressed.

The chip also provides TTL outputs which are a must in some systems. Confirm that you have received the latest product standards or specifications before final design, purchase or use.

When you want logic inverter. Hitachi bears no responsibility for failure or damage when used. Even within the guaranteed ranges, consider normally foreseeable.

Here are a few cases why it is used.

IC Datasheet: 74LS02

Products and product specifications may be subject to change without notice. These two inputs are connected to buttons. We can use one or all gates. Hitachi makes every attempt to ensure that its products are of high quality and reliability. The description for each pin is given below. The chip has four NOR gates in it. Hitachi Semiconductor America Inc. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without.

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Because of this the chip can be used high speed applications. This product is not designed to be radiation resistant.

Even within the guaranteed ranges, consider normally 7ls02 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. Tun-Hwa North Road, Taipei 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: Like this we can use each gate of the chip depending on requirement. Now let us consider datashset few states: 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. Because transistor drop is zero Y1 will be LOW. Where high speed NOR operation is necessary. The chip is available in different packages and is datashert depending on requirement. The chipis basically used when NOR logic function is required. The buttons are connected to change the logic of inputs. With that datasjeet total drop across both transistors will be zero.

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Hitachi Asia Hong Kong Ltd. The four NOR gates in the chip mentioned earlier are connected internally as shown below.

IC Datasheet: 74LS02

The two inputs are driven out from bases of two transistors. Submitted by admin on 5 April When one of buttons is pressed. In 74lx02 state the current flow through base of both transistors will be zero. For realizing the above truth table let us take simplified NOR gate and have it connected as shown below.

Copyright ‘ Hitachi, Ltd. It is really popular and is available everywhere. For further information write to: VCC-Connected to positive voltage to provide power to all four gates.

No one is permitted to reproduce or duplicate, in any form, the whole datazheet part of this document without written approval from Hitachi. Both transistors will be ON and voltage across both of them will be zero.