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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74LS Datasheets

The description for each pin is given below. Both transistors will be ON and voltage across both of them will be zero. So the total supply voltage appears across the transistors Q1 and Q2.

We can use all four gates this way tosatisfy our needs. When both inputs are HIGH: It also analyzes transistor’s characteristics such as voltage and gain. Where high speed NAND operation is necessary.

74LS00 Datasheet PDF

With that the entire supply voltage appears across the transistor which is in OFF state. The 74xxyy ICs are logic gates of digital electronics. Use flip-flops to build a divider.


The chip is available in different packages and is chosen depending on requirement. Also each gate has two inputs.

The internal connection of four gates is shown 74l00. Use dividers to build a counter. So we can make 74ls00 a four NOT gate chip if necessary. Even at this case output will be HIGH according to the truth table. Now let us consider a simple application circuit of the chip NAND gate. Each gate can be used separately. It is really popular and is available everywhere.

With these three cases we have realized the truth table for chip NAND gate.

This chip has less 74s00 times which are needed for high speed applications. 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. There are many reasons of using 74LS00 in electronic circuits. It can be connected to any type of stereo audio source such as iPod, Computer, Laptop, CD Player, Walkman, Television, Satellite Receiver, Tape Deck or other stereo datasneet to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground.


It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors. When you want logic inverter.

74LS00 Datasheet

Here are a few examples where it is used. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings.

Headphone amplifier is small enough to fit in Altoids tin box, and thanks to low power consumption may be supplied from a single 9V battery. TL — Programmable Reference Voltage. So 74LS00 can be used in high frequency systems. It is a very useful bench test equipment for testing and finding out the frequency of various devices with unknown frequency such as oscillators, radio receivers, transmitters, function generators, crystals, etc.

Submitted by admin on 3 April In the case when any one input is HIGH: