74138 DECODER PDF

74LS is a member from ’74xx’family of TTL logic gates. The chip is designed for decoding or de-multiplexing applications and comes with 3. The 74LS is a high speed 1-of-8 Decoder/Demultiplexer. This device is ideally suited for high speed bipolar memory chip select address decoding. The. The 74LS is a 3-to-8 Decoder/Demultiplexer designed to be used in high- performance memory decoding or data-routing applications requiring very short.

Author: Zolozuru Dokinos
Country: Andorra
Language: English (Spanish)
Genre: Marketing
Published (Last): 22 November 2012
Pages: 302
PDF File Size: 9.50 Mb
ePub File Size: 8.79 Mb
ISBN: 519-4-63947-818-5
Downloads: 67690
Price: Free* [*Free Regsitration Required]
Uploader: Migami

74LS Decoder Pinout, Features, Circuit & Datasheet

The memory unit data exchange rate determines the performance of any application and the delays of any kind are not tolerable there. Product successfully added to your wishlist!

After connecting the enable pins as shown in circuit diagram you can use the input line to get the output. How to use 74LS Decoder For understanding dceoder working of device let us construct a simple application circuit with a few external components as shown below. Choose an option 3. 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.

In such applications using 74LS line decoder is ideal because the delay times of this device are decodwr than the typical access time of the memory. All inputs are clamped with high-performance Schottky diodes to suppress line-ringing and to simplify system design.

  LIBRO PLAZOLA HABITACIONAL PDF

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

Standard frequency crystals — use these crystals to 7438 a clock input to your microprocessor. It features fully buffered inputs, each of which represents only one normalized load to its driving circuit.

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

Select options Learn More. Features 74ls features include; Designed Specifically for High-Speed: A line decoder can be implemented without external inverters and a line decoder requires only one inverter. You must be logged in to leave a review.

Submitted by admin on 26 October Reviews 0 Leave A Review You must be logged in to leave a review. 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.

74LS138, 3-to-8 Decoder / Demultiplexer – 74138

Here the outputs are connected to LED to show which output decodfr goes LOW and do remember the outputs of the device are inverted. Product already added to wishlist!

  AUSTRO-HUNGARIAN BATTLESHIPS 19148 PDF

In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. The 74lS decode one of eight lines dependent on the conditions at the three binary select inputs and the three enable inputs. The LM is a quadruple, independent, high-gain, internally compensated operational amplifiers designed to have operating characteristics similar to the LM 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. Add to cart Learn More. The chip is designed for decoding or de-multiplexing applications and comes with 3 inputs to 8 output setup.

74LS HD74LSP 3 to 8 Decoder/Demultiplexer | Warefab

The three buttons here represent three input lines for the device. Inputs include clamp diodes. This enables the use of current limiting resistors to interface inputs to voltages in excess of V CC. For understanding the working let us consider the truth table of the device.

TL — Programmable Reference Voltage. An enable input can be used as a data input for demultiplexing applications.