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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74LS02 Datasheet PDF

The four NOR gates in the chip mentioned earlier are connected internally as shown below. For realizing the above truth table let us take simplified NOR gate 744ls02 have it connected as shown below. Even within the guaranteed ranges, consider normally foreseeable. When you want logic inverter. Copyright ‘ 7l4s02, 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.


The chip also provides TTL outputs which are a must in some systems.

It is really popular and is available everywhere. 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. Both transistors will be ON and voltage across both of them will be zero. Hitachi bears no responsibility for failure or damage when used.

74LS02 Datasheet(PDF) – Fairchild Semiconductor

The chip has four NOR gates in it. Because of this the chip can be used high speed applications.

Hitachi Semiconductor America Inc. When one of buttons is pressed. Products and product specifications may be subject to change without notice.

With that the total drop across both transistors will be zero. This LED is connected to detect the state of output. No one is permitted to reproduce or duplicate, in datssheet form, the whole or part of this document without. The two inputs are driven out from bases of two transistors. After verifying the three states, you can tell that we have satisfied the above truth table.


Hitachi Asia Hong Kong Ltd. Submitted by admin on 5 April Where high speed NOR operation is necessary. Hitachi makes every attempt to ensure that its products are of high quality and reliability. When both buttons are not pressed. Tun-Hwa North Road, Taipei Confirm that you have.

74LS02 Datasheet

Now let us consider a few states: This product is not designed to be radiation resistant. In the circuit two transistors are connected to form a NOR gate.

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.

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