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. In the case when any one input is HIGH: 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.

Use flip-flops to build a divider. With that both inputs of the gate will be LOW.

It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors. Use dividers to build a counter. So the total supply voltage appears across the transistors Q1 and Q2. Here are a few examples where it is used.

Both transistors will be ON and voltage across both of them will be zero. Even at this case output will be HIGH according to the truth table. 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 system to transmit stereo sound with excellent clarity throughout your home, office, yard or camp ground.

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When both inputs are HIGH: Here we have connected two inputs to two buttons and output is connected to a LED. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors. After verifying the cases, you can tell that we have satisfied the above truth table. Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket. We can use all four gates this way tosatisfy our needs.

It’s small, power efficient, yet customizable through onboard 2 x 7 perfboard that can be used ratasheet connecting various sensors and connectors. When you want logic inverter.

74LS00 Datasheet PDF

The output waveforms can be both amplitude and frequency modulated. So we can make 74ls00 a four NOT gate chip if necessary. Submitted by admin on 3 April Now let us consider a simple application circuit of the chip NAND gate. In case one of buttons is closed.

The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings. With that the entire supply voltage appears across the transistor which is in OFF state.

It is really popular and is available everywhere. Each gate can be used separately. It also analyzes transistor’s characteristics such as voltage and gain. Where high speed NAND operation is necessary. Also each gate has two inputs. The chip is available in different packages and is chosen depending on requirement.


The meter is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. You can control lights, fans, AC system, computer, printer, amplifier, robots, garage door, security systems, motor-driven curtains, motorized window blinds, door locks, sprinklers, motorized projection screens and anything else you can think of.

There are many reasons of using 74LS00 in electronic circuits. Under normal circumstances both buttons are not pressed and are open. With these three cases we have realized the truth table for chip NAND gate.

74LS00 Datasheet(PDF) – List of Unclassifed Manufacturers

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. So 74LS00 can be used in high frequency systems.

This chip has less transition times which are needed for high speed applications. The internal connection of four gates is shown 7l4s00. TL — Programmable Reference Voltage.

The description for each pin is given below.