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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For further information write to: Output of the gate is taken out from joint collector of both transistors. With that the total drop across both transistors will be zero.
When you want logic inverter. These two inputs are connected to buttons. The chip has four NOR gates in it. Products and product specifications may be subject to change without notice. The chipis basically used when NOR logic function is required. 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.
TL — Programmable Reference Voltage. Even within the guaranteed ranges, consider normally foreseeable. The chip is available in different packages and is chosen depending on requirement. Confirm that you have received the latest product standards or specifications before final design, purchase or use.
74LS02 Datasheet PDF –
The two inputs are driven out 74os02 bases of two transistors. When both buttons are pressed. 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.
The chip also provides TTL outputs which are a must in some systems. Hitachi Asia Hong Kong Ltd. Hitachi makes every attempt to ensure that its products are of high quality and reliability. The buttons are connected to change the logic of inputs.
This output is dayasheet to a LED trough a current limiting resistor. For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. We can use one or all gates.
The four NOR gates in the chip mentioned earlier are connected internally as shown below.
Confirm that you have. The description for each pin is given below. When one of buttons is pressed. 74lw02 them the switching delays of gates are minimized. Like this we can use each gate of the chip depending on requirement.
Because of this the chip can be used high speed applications.
Both transistors will be ON and voltage across both of them will be zero. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi.
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Copyright ‘ Hitachi, Ltd. Datasheeg let us consider a few states: Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. VCC-Connected to positive voltage to provide power to all four gates.
In the circuit two transistors are connected to form a NOR gate. Hitachi Semiconductor America Inc. It is really popular and is available everywhere.
Tokyo 03 Fax: Tun-Hwa North Road, Taipei After verifying the three states, you can tell that we have satisfied the above truth table. Where high speed NOR operation is necessary. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly. When both buttons are not pressed. No one is permitted to reproduce or duplicate, 74la02 any form, the whole or part of this document without. Because transistor drop is zero Y1 will be LOW.