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74LS04N DATASHEET PDF

74LS Absolute Maximum Ratings(Note 1). Note 1: The “Absolute Maximum Ratings” are those values beyond . This datasheet has been downloaded from. 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. 74LS04N from Fairchild Semiconductor. Find the PDF Datasheet, Specifications and Distributor Information.

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Choose the appropriate package depending on requirement. The description for each pin is given below. The chip is basically used where a logic inverter is needed.

Inverter Gates in this chip provide output which is negated logic input. The chip has six gates which do NOT operation. When you want TTL outputs. The gates in this chip provide TTL logic outputs which are a must in some applications.

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The internal connection of gates can be given as below. As shown in diagram, we have a transistor forming a NOT gate. Input here is 1A which is connected to button.

Output 1Y is connected to LED through a resistor. The LED is connected to know the output status. Current through base of transistor will be zero.

74LS04 Datasheet

Because base current is zero the transistor will be in OFF state. Under OFF sate the total supply voltage appears across the transistor. Under such case the output 1Y here will be HIGH, since output is nothing but datasheeg across transistor. Voltage appears at base of transistor and current flows through it. Because base current is present the transistor will turn ON.

Under ON sate the total supply voltage appears across the resistor and voltage across transistor will be zero. Under such case the output 1Y here will also be LOW, since output is nothing but voltage across transistor. We have six of these gates in 74LS04 chip.

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We can use 74,s04n or all six of these gates depending on requirement. Submitted by admin on 4 April The series are digital logic integrated circuits. These NOT gates perform Inverting function. Here are few cases where 74LS04 is used.

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Now let us take a single gate of the six and connect it as shown in circuit diagram. In the circuit, When button is not pressed: When button is pressed: If we draw truth table based on above cases, we will have.

TL — Programmable Reference Voltage.