SN74HC138DR Allicdata Electronics

SN74HC138DR Integrated Circuits (ICs)

Allicdata Part #:

296-1193-2-ND

Manufacturer Part#:

SN74HC138DR

Price: $ 0.08
Product Category:

Integrated Circuits (ICs)

Manufacturer: Texas Instruments
Short Description: IC 3-8 LINE DECOD/DEMUX 16-SOIC
More Detail: Decoder/Demultiplexer 1 x 3:8 16-SOIC
DataSheet: SN74HC138DR datasheetSN74HC138DR Datasheet/PDF
Quantity: 45000
2500 +: $ 0.07692
5000 +: $ 0.07226
12500 +: $ 0.06760
Stock 45000Can Ship Immediately
$ 0.08
Specifications
Series: 74HC
Packaging: Tape & Reel (TR) 
Part Status: Active
Type: Decoder/Demultiplexer
Circuit: 1 x 3:8
Independent Circuits: 1
Current - Output High, Low: 5.2mA, 5.2mA
Voltage Supply Source: Single Supply
Voltage - Supply: 2 V ~ 6 V
Operating Temperature: -40°C ~ 85°C
Mounting Type: Surface Mount
Package / Case: 16-SOIC (0.154", 3.90mm Width)
Supplier Device Package: 16-SOIC
Base Part Number: 74HC138
Description

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Logic-signal switches, multiplexers, and decoders are commonplace in modern electronics. They’re used to improve the speed and accuracy of a system by enabling instantaneous transformations between digital and analog states. In this article, we’ll explore the application field and working principle of the SN74HC138DR, a 3-to-8 line data selector/multiplexer.

The SN74HC138DR, produced by Texas Instruments, is a popular choice for multiplexing because it has an integrated active LOW enable input which can be used to quickly and reliably select one of 8 data lines in response to an input signal. It is an ideal choice for applications such as microprocessor-based bus control, multiplex flashing displays, and transmission rate down conversion.

It can operate over a wide voltage range, from 2.5 to 6V. It features low power consumption, is compatible with TTL logic systems and meets the high speed requirements of modern digital systems.

The SN74HC138DR is composed of two basic components: two 3-to-8 decoders, each with two data inputs, and a multiplexer. The multiplexer contains an output enable input and eight outputs, each of which can be connected to one of the eight data inputs.

When the output enable input is LOW, the multiplexer will select the data input corresponding to the active LOW address inputs. When the output enable input is HIGH, all of the outputs are disabled and the device will not respond to the address inputs. This allows for very fast switching between data inputs, and thus is suitable for applications where very high speed is desired.

The SN74HC138DR also has a strobe input which is used to implement data synchronization. When the strobe input is HIGH, the data output will remain disabled regardless of the value at the output enable input.

The SN74HC138DR can be used in applications such as analog-to-digital converters, serial port buffers, address latches, or audio processing. It is used when a high-speed or low-power multiplexing data source is needed, as it can switch between data sources very quickly and is capable of handling data rates up to 8MHz.

The SN74HC138DR is a great choice for any application that requires a multiplexer. With its wide voltage range and low power consumption, it can provide reliable operation in even the most demanding of environments. Its ability to quickly switch between data sources and the ability to synchronize data make it a great choice for applications where speed and accuracy are paramount.

The specific data is subject to PDF, and the above content is for reference

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