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.
|Published (Last):||2 May 2009|
|PDF File Size:||9.16 Mb|
|ePub File Size:||20.60 Mb|
|Price:||Free* [*Free Regsitration Required]|
Hitachi makes every attempt to ensure that its products are of high quality and reliability. It is really popular and is available everywhere. Submitted by admin on 5 April 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, datasbeet or use. When both buttons are pressed.
74LS02 Datasheet PDF –
The description for each pin is given below. This product is not designed to be radiation resistant. Hitachi Asia Hong Kong Ltd. With that the total drop across both transistors will be zero.
Hitachi bears no responsibility for failure or damage when used beyond the guaranteed ranges. The chip is available in different packages and is chosen depending on datazheet.
In that state the current flow through base of both transistors will be zero. Tokyo 03 Fax: Hitachi Semiconductor America Inc.
No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. Hitachi bears no responsibility for failure or damage when used.
74LS02 Datasheet(PDF) – Fairchild Semiconductor
The four NOR gates in the chip mentioned earlier are connected internally as shown below. The buttons are connected to change the logic of inputs. When you want logic inverter.
Even within the guaranteed datashheet, consider normally foreseeable. In the circuit two transistors are connected to form a NOR gate. For realizing the above truth table let us take simplified NOR gate and have it connected as shown below. Output of the gate is taken out from joint collector of both transistors. These two inputs are connected to buttons. We can use one or all gates. Now let us consider a few states: When one of buttons is pressed.
This LED is connected to detect the state of output. VCC-Connected to positive voltage to provide power to all four gates. Products and product specifications may be subject to change without notice.
TL — Programmable Reference Voltage.
Both transistors will be ON and voltage across both of them will be zero. 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.
No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without.
PDF 74LS02 Datasheet ( Hoja de datos )
This output is connected to a LED trough a current limiting resistor. Here are a few cases why it is used. The two inputs are driven out from bases of two transistors. Like this we can use each gate of the chip depending on requirement. Copyright ‘ Hitachi, Ltd. When both buttons are not pressed. Where high 47ls02 NOR operation is necessary. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly.
Even within the guaranteed ranges, consider datashwet 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 datashet to operation of the Hitachi product.
Tun-Hwa North Road, Taipei