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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Now let us consider a few states: No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.

VCC-Connected to positive voltage to provide power to all four gates. In the circuit two transistors are connected to form a NOR gate.

SN54/74LS02 Motorola QUAD 2-INPUT NOR GATE ChipFind Datasheet Archive |

Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply datzsheet range, heat radiation characteristics, installation conditions and other characteristics. This LED is connected to detect the state of output.


In that state the current flow through base of both transistors will be zero. Tun-Hwa North Road, Taipei Datwsheet both buttons are pressed. The four NOR gates in the chip mentioned earlier are connected internally as shown below. Even within the guaranteed ranges, consider normally foreseeable.

74LS02 Datasheet(PDF) – Hitachi Semiconductor

The chipis basically used when NOR logic function is required. With them the switching delays of gates are minimized. Submitted by admin on 5 April When you want logic inverter. The chip has four NOR gates in it. Hitachi bears no responsibility for failure or damage when used.

It is really popular and is available everywhere. Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. After verifying the three states, you can tell that we have satisfied the above truth table.

Design your application so that the product is used within the ranges guaranteed by Hitachi particularly. Both transistors will be ON and voltage across both of them will be zero.

We can use one or all gates. 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. The two inputs are driven out from bases of two transistors. For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. This product is not designed to be radiation resistant. Products and product specifications may be subject to change without notice. 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.


PDF 74LS02 Datasheet ( Hoja de datos )

The chip is available in different packages and is chosen depending on requirement. Confirm that you have. When both buttons are not pressed. The buttons are connected to change the logic of inputs.

Output of the gate is taken out from joint collector of both transistors. For further information write to: