Note The ”Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaran- teed The device should not be operated at. µA. VCC = MAX, VIN = V. IIH. Input HIGH Current. mA. VCC = MAX, VIN = V. IIL. Input LOW Current. – mA. VCC = MAX, VIN = V. IOS. Part Number: 74LS00, Maunfacturer: National Semiconductor, Part Family: 74, File type: PDF, Document: Datasheet – semiconductor.

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The 74xxyy ICs are logic gates of digital electronics.

74LS00 Datasheet PDF

Also each gate has two inputs. The chip is available in different packages and is chosen depending on requirement. The description for each pin is given below. There are many reasons of using 74LS00 in electronic circuits.


Here are a few examples where it is used. Each gate can be used separately. When you want logic inverter. So we can make 74ls00 a four NOT gate chip if necessary. Where high speed NAND operation is necessary. This chip has less transition times which are needed for high speed applications. So 74LS00 can be used in high frequency systems. The internal connection of four gates is shown below.

So the total supply voltage appears across the transistors Q1 and Q2. With that the entire supply voltage appears across the transistor which is in OFF state. Darasheet transistors will be ON and voltage across both of them will be zero.

After verifying the cases, you can tell that we have satisfied the above truth table. Here we have connected two inputs to two buttons and output is connected to a LED.

74LS Datasheets

Under normal circumstances both buttons are not pressed and are open. With that both inputs of the gate will be LOW.


In case one of buttons is closed. Even at this case output will dattasheet HIGH according to the truth table. With these three cases we have realized the truth table for chip NAND gate.

We can use all four gates this way tosatisfy our needs. Submitted by admin on 3 April It is really popular and is available everywhere. In the case when any datasheey input is HIGH: When both inputs are HIGH: Now let us consider a simple application circuit of the chip NAND gate. TL — Programmable Reference Voltage.