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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The buttons are connected to change the logic of inputs. Tokyo 03 Fax: The two inputs are driven out from bases of two transistors. Like this we can use each gate of the chip depending on requirement. When you want logic inverter. 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.
Because transistor drop is zero Y1 will be LOW.
Hitachi Asia Hong Kong Ltd. Products and product specifications may be subject to change without notice. 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.
74LS02 Datasheet PDF
Because of this the chip can be used high speed applications. TL — Programmable Reference Voltage. Now let us consider a few datashedt For further information write to: Hitachi Semiconductor America Inc.
Copyright ‘ Hitachi, Ltd. Where high speed NOR operation is necessary.
In that state the current flow through base of both transistors will be zero. Even within the guaranteed ranges, consider normally foreseeable. This output is connected to a LED trough a current limiting resistor. The four NOR gates in the chip mentioned earlier are connected internally as shown below. When one of buttons dxtasheet pressed.
74LS02 Hoja de datos ( Datasheet PDF ) – Quadruple 2-input Positive NOR Gates
For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. The chip has four Datasueet gates in it. The description for each pin is given below. The chip is available in different packages and is chosen depending on requirement.
74s02 bears no responsibility for failure or damage when used beyond the guaranteed ranges. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. Submitted by admin on 5 April This product is not designed to be radiation resistant. Confirm that you have received the latest product standards or specifications before final design, purchase or use.
The chipis basically used when NOR logic function is required. Output of the gate is taken out from joint collector of both transistors.
Here are a few cases why it is used. When both buttons are pressed. These two inputs are connected to buttons.
Design your application so that the product is used within the ranges guaranteed by Hitachi particularly. It is really popular and is available everywhere. We can use one or all gates. After verifying the three states, you can tell that we have satisfied the above truth table. This LED is connected to detect the state of output. Tun-Hwa North Road, Taipei Hitachi makes every attempt to ensure that its products are of high quality and reliability.
With them the switching delays of gates are minimized. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without.
With that the total drop across both transistors will be zero. In the circuit two transistors are connected to form a NOR gate. Both transistors will be ON and voltage across both of them will be zero. Hitachi bears no responsibility for failure or damage when used. The chip also provides TTL outputs which are a must in some systems. VCC-Connected to positive voltage to provide power to all four gates. Confirm that you have. When both buttons are not pressed.