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. 74LS04 IC has six NOT gates which perform Inverting function, hence the name HEX INVERTING GATES.
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As shown in diagram, we have a transistor forming a NOT gate. In the circuit, When button is not pressed: The gates in this chip provide TTL logic outputs which are a dwtasheet in some applications.
Submitted by admin on 4 April The chip is basically used where a logic inverter is needed.
National Semiconductor – datasheet pdf
Hitachi bears no responsibility for failure or damage when used. For further information write to: Design your application so that the product is used within the ranges guaranteed by Hitachi particularly. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without written approval from Hitachi. Here are few cases where 74LS04 is used. The description for each pin is given below. Because base current is zero the transistor will be in OFF state.
Output 1Y is connected to LED through a resistor.
Inverter Gates in this chip provide output which is negated logic input. Even within the guaranteed ranges, consider normally foreseeable failure rates or failure modes in semiconductor devices and employ systemic measures such as fail- safes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other consequential damage due to operation of the Hitachi product.
The series are digital logic integrated circuits. Because base current is present the transistor will turn ON.
Design your application so that the product is used within the ranges guaranteed by Hitachi particularly for maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions and other characteristics. No one is permitted to reproduce or duplicate, in any form, the whole or part of this document without. Tokyo 03 Fax: Hitachi Semiconductor America Inc. Confirm that you have. The chip has six gates which do NOT operation.
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Datashret we draw truth table based on above cases, we will have. Under such case the output 1Y here will be HIGH, since output is nothing but voltage across transistor. This product is not designed to be radiation resistant.
Tun-Hwa North Road, Taipei Current through base of transistor will be zero. When button is pressed: We can use one or all six of these gates depending on requirement.
PDF 74LS04 Datasheet ( Hoja de datos )
Now let us take a single gate of the six and connect it as shown in circuit diagram. The LED is connected to know the output status. Under such case the output 1Y here will also be LOW, since output is nothing but voltage across transistor.
These NOT gates perform Inverting function. TL — Programmable Reference Voltage. We have six of these gates in 74LS04 chip. Voltage appears at base of transistor and current flows through it. Datasheeet here is 1A which is connected to button. Copyright ‘ Hitachi, Ltd. Hex Inverters with Open Collector Outputs.
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Under ON sate the total supply 74,s04 appears across the resistor and voltage across transistor will be zero. Products and product specifications may be subject to change without notice.
The internal connection of gates can be given as below. When you want TTL outputs. Under OFF sate the total supply voltage appears across the transistor. Confirm that you have received the latest product standards or specifications before final design, purchase or use.
Even within the guaranteed ranges, consider normally foreseeable.