IC 74138 DATASHEET PDF


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Lead Small Outline Integrated Circuit (SOIC), JEDEC MS, Narrow. DM74LSSJ. M16D. Lead Small Outline Package (SOP), EIAJ TYPE II. Home > Integrated Circuits > 74 Series > 74LS Series. 74LS – 74LS 3 to 8 Decoder/Demultiplexer Datasheet – Buy 74LS Technical Information. 74LS is a member from ’74xx’family of TTL logic gates. The chip is 74LS – 3 to 8 Line Decoder IC . 74LS Decoder Datasheet.

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Drivers Motors Relay Servos Arduino. Nye on Dec 29, How to use 74LS Decoder For understanding the working of device let us construct a simple application circuit with a few external components as shown below. A line decoder can be implemented without external inverters and a line decoder requires only one inverter. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding.

Logic IC 74138

The three enable pins of chip in which Two active-low and one active-high reduce the need for external gates or inverters when expanding. Product already added to wishlist! These devices contain four independent 2-input AND gates.

In such applications using 74LS line decoder is ideal because the delay times of this device are less than the typical access time of the memory. Features and Electrical characteristics of 74LS Decoder Designed specifically for high speed Incorporates three enable pins to simplify cascading De-multiplexing capability Schottky clamped for high performance ESD protection Balanced propagation delays Inputs accept voltages higher than VCC Supply voltage: The memory unit data exchange rate determines the performance of any application and the delays of any kind are not tolerable there.

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Posted by Kirsten T. Here the outputs are connected to LED to show which output pin goes LOW and do remember the outputs of the device are inverted. TL — Programmable Reference Voltage. Submitted by admin on 26 October For understanding the working let us consider the truth table of the device. This device is ideally suited for high speed bipolar memory chip select address decoding. This way we can realize all the truth table by toggling the three buttons B1, B2 and B3 Three inputs A0, A1 and A2 and with that we have three input to eight output decoder.

Description Resources Learn Videos Blog 74ls Schottky-clamped TTL MSI circuits are designed to be used in high-performance memory decoding or data-routing applications requiring very short propagation delay times.

Reviews 0 Leave A Review You must be logged in to leave a review. After connecting the enable pins as shown in circuit diagram you can use the input line to get the output.

74LS Decoder Pinout, Features, Circuit & Datasheet

This amplifier exhibit low supply-current drain and input bias and offset currents that is much less than that of the LM Wiring Diagram Third Level. An enable input can be used as a data input for demultiplexing applications. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. It features fully buffered inputs, each of which represents only one normalized load to its driving circuit.

All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and to simplify system design. Also the chip inputs are clamped with high-performance Schottky diodes to suppress line-ringing and simplify system design.

Choose an option 20 28 Features 74ls features include; Designed Specifically for High-Speed: A line decoder can be implemented with no external inverters, and a line decoder requires only one inverter. The 74lS decode one of eight lines dependent on the conditions at the three binary select inputs and the three enable inputs.

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As shown in table first three rows the enable pins needed to be connected appropriately or irrespective of input lines all outputs will be high. Product dahasheet added to your wishlist! When employed with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory are usually less than the typical access time of the memory.

The chip is designed for decoding or de-multiplexing applications and comes with 3 inputs to 8 output setup. The LM is a quadruple, catasheet, high-gain, internally compensated operational amplifiers daatasheet to have operating characteristics similar to the LM Choose an option 3.

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This enables the use of current limiting resistors to interface inputs to voltages in excess of V CC. As mentioned earlier the chip is specifically designed to be used in high-performance memory-decoding or data-routing applications which require very short propagation delay times.

Select options Learn More. In high performance memory systems these decoders can be used to minimize the effects of system decoding. Inputs include clamp diodes.

Add to cart Learn More. This means that the effective system delay introduced by the Schottky-clamped system decoder is negligible. For understanding the working of device let us construct a simple application circuit with a few external components as shown below.