DATASHEET IC 74138 PDF

DATASHEET IC 74138 PDF

Lead Small Outline Integrated Circuit (SOIC), JEDEC MS, Narrow. DM74LSSJ. M16D. Lead Small Outline Package (SOP), EIAJ TYPE II. 74LS, 74LS Datasheet, 74LS pdf, buy 74LS, 74LS 3 to 8 Decoder. 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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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. All of its essential components and connections are illustrated by graphic symbols arranged to describe operations as clearly as possible but without regard to the physical form of the various items, components or connections.

Logic IC 74138

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. Standard frequency crystals — use these crystals to provide a clock input to your microprocessor.

This enables the use of current limiting resistors to interface inputs to voltages in excess of V CC. 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: Reviews 0 Leave A Review You must be logged in to leave a review.

Two active-low and one active-high enable inputs reduce the need for external xatasheet or inverters when expanding.

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Ic 74ls Logic Diagram – Wiring Diagram Third Level

The chip is designed for decoding or de-multiplexing applications and comes with 3 inputs to 8 output setup. The design is also made for the chip to be used in high-performance memory-decoding or data-routing applications, requiring very short propagation delay times.

A line decoder can be implemented with no 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. Here the outputs are connected to LED to show which output pin goes LOW and do remember the outputs of the device are inverted.

An enable input can be used as a data input for demultiplexing applications. 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.

This means that the effective system delay introduced by the Schottky-clamped system decoder is negligible. This means that the effective system delay introduced by the decoder is negligible to affect the performance. Posted by Rose J.

These devices contain four datashet 2-input AND gates. Description Resources Learn Videos Blog 74ls Schottky-clamped TTL MSI circuits are designed to be used kc high-performance memory decoding or data-routing applications requiring very short propagation delay times.

In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. Product already added to wishlist! 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. As shown in table first three rows the enable datasbeet needed to be connected appropriately or irrespective of input lines all outputs will be high.

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The 74lS decode one of eight lines dependent on the conditions at the three binary select inputs and the three enable inputs. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and to simplify system design. Select options Learn More. TL — Programmable Reference Voltage.

A line decoder can be implemented without external inverters and a line 741138 requires only one inverter. Also the chip inputs are clamped with high-performance Schottky diodes to suppress line-ringing and simplify system design.

The memory unit data exchange rate determines the performance of any application and the delays of any kind are not tolerable there.

The LM is a quadruple, independent, high-gain, internally compensated operational amplifiers designed to datashret operating characteristics similar to the LM 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.

In such applications using 74LS line decoder is ideal because the delay 741138 of this device are less than the typical access time of the memory.

For understanding the working let us consider the truth table of the device.