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Name: 74HC139D
Brand: Toshiba Semiconductor and Storage
SKU: 74HC139D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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Toshiba Semiconductor and Storage 74HC139D

Part No.:: 74HC139D

Manufacturer:: Toshiba Semiconductor and Storage

Package:: 16-SOIC (0.154, 3.90mm Width)

Datasheet:: 74HC139D.pdf

Description:: IC DECODER/DEMUX 1X2:4 16SOIC

In Stock:: 2895

Quantity:: Add To Cart

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74HC139D Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
74HC
ProductStatus:
Obsolete
Type:
Decoder/Demultiplexer
Circuit:
1 x 2:4
IndependentCircuits:
2
Current-OutputHighLow:
5.2mA, 5.2mA
VoltageSupplySource:
Single Supply
Voltage-Supply:
2V ~ 6V
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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74HC139D information

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74HC139D Typical application Circuitry

74HC139D

The 74HC139D is a fundamental component of the 74HC series, renowned for its incorporation of high-speed CMOS technology. This series is celebrated for its seamless blend of CMOS efficiency with high-speed operational capabilities, making it ideally suited for a vast array of digital applications. Specifically, the 74HC139D is a dual 2-to-4 line decoder/demultiplexer, designed to facilitate efficient data distribution from two input lines to four output lines in each section, thereby doubling the demultiplexing or decoding capabilities within a single device. This functionality is crucial in applications requiring the distribution of digital signals across multiple pathways, such as in digital control systems, signal routing applications, and when expanding the output options of microcontrollers.

1. Series Overview: The 74HC139D is part of the 74HC series, which is recognized for devices that offer the dual advantages of low power consumption and high-speed operation typical of CMOS technology. This series is adept at interfacing within digital systems, where the 74HC139D enhances functionality by providing precise and efficient signal decoding and demultiplexing capabilities.

2. Pin Configuration and Application: The 74HC139D is presented typically in an SOIC-16 package, allocating its pins to support its dual-functionality effectively. The device features two independent sections, each with its address inputs (A0 and A1 for the first section, pins 2 and 3; A0' and A1' for the second section, pins 14 and 13), an enable input (G for the first section, pin 1; G' for the second section, pin 15), and four output lines (Y0 to Y3 for the first section, pins 4 to 7; Y0' to Y3' for the second section, pins 12 to 9). The enable inputs are active low, meaning the decoder section is operational when G or G' is held low. A Vcc pin (pin 16) supplies power to the device, and a GND pin (pin 8) provides the common ground.

3. Establishing Circuit Connections: Optimal operation of the 74HC139D requires a supply voltage (Vcc) typically ranging from 2V to 6V, accommodating various logic level needs. The address inputs (A0, A1, A0', A1') dictate the active output line in each section, contingent upon the enable inputs (G, G') being low. When enabled, each section decodes the address inputs to activate one of the four outputs, driving it low while the others remain high, demonstrating the device's capability to decode or demultiplex signals with high precision.

4. Digital System Integration: The dual 2-to-4 line configuration of the 74HC139D allows for versatile application in digital systems, making it indispensable in scenarios that require efficient signal distribution to multiple pathways from a limited number of inputs. Its capacity to decode or demultiplex signals is particularly beneficial in designing complex control systems, enhancing microcontroller output capabilities, and simplifying signal routing processes.

5. Signal Integrity Considerations: Integrating the 74HC139D into electronic designs calls for attention to signal integrity. This includes employing decoupling capacitors near the Vcc and GND pins to ensure a stable power supply and carefully planning the PCB layout to reduce potential signal interference, ensuring that the device functions reliably and effectively in various applications.

In summary, the 74HC139D exemplifies the innovative engineering of the 74HC series, offering a powerful solution for signal decoding and demultiplexing within digital systems. By employing a thoughtful approach to circuit design, capitalizing on the device's dual decoding/demultiplexing functionality, and prioritizing signal integrity, the 74HC139D supports the creation of advanced, high-performance electronic designs. This component showcases the fusion of functionality and operational efficiency, meeting the diverse needs of modern digital applications with precision and reliability.

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6. What is the process for return or replacement of 74HC139D?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of 74HC139D.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

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