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 darasheet. 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.

74LS Datasheets

We can use all four gates this way tosatisfy our needs. It is really popular and is available everywhere. After verifying the cases, you can tell that we have satisfied the above truth table.

Here are a few examples where it is used.

When you want logic inverter. With that both inputs of the gate will be LOW. 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. Now let us consider a simple application circuit of the chip NAND gate.


With that the entire supply voltage appears across the transistor which is in OFF state. So 74LS00 can be used in high frequency systems. The circuit includes an auto ranging as well as reset switch and produces very accurate and stable readings.

Also each gate has two inputs. Arduino Prototype uses all standard through-hole components for easy construction, two of which are hidden underneath IC socket.

74LS00 Datasheet

The meter is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. This chip has less transition times which are needed for high speed applications.

There are many reasons of using 74LS00 in electronic circuits. Submitted by admin on 3 April It is an irreplaceable tool for troubleshooting and repairing electronic equipment by determining performance and health of electrolytic capacitors.

In the case when any one input is HIGH: Under normal circumstances both buttons are not pressed and are open. The output waveforms can be both amplitude and frequency modulated.

74LS00 Datasheet PDF

Use dividers to build a counter. Here we have connected two inputs to two buttons and output is connected to a LED. The description for each pin is given below.


When both inputs are HIGH: 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. Even at this case output will be HIGH according to the truth table. This LC Meter allows to measure incredibly small inductances making it perfect tool for making all types of RF coils and inductors.

Use flip-flops to build a divider. The internal connection of four gates is shown below. The chip is available in different packages and is chosen depending on requirement. TL — Programmable Reference Voltage.

So the total supply voltage appears across the transistors Q1 and Q2. Each gate can be used separately. It also analyzes transistor’s characteristics such as voltage and gain. It’s small, power efficient, yet customizable through onboard 2 x 7 perfboard that can be used for connecting various sensors and connectors. So we can make 74ls00 a four NOT gate chip if necessary.