74HC238D

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74HC238D

+BOM

IC DECODER 1 X 3:8 16SOIC

365 1일 품질 보증

7*24 영업 시간 서비스 보증

90-판매 후 1일 보증

정품 보증

사양

속성 가치
Package Tape & Reel (TR),Cut Tape (CT)
Series 74HC
ProductStatus Active
Type Decoder/Demultiplexer
Circuit 1 x 3:8
IndependentCircuits 1
Current-OutputHighLow 5.2mA, 5.2mA
VoltageSupplySource Single Supply
Voltage-Supply 2V ~ 6V
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 16-SOIC (0.154, 3.90mm Width)

개요

Description

The 74HC238D is a high-speed, CMOS 3-to-8 line decoder/demultiplexer. It is part of the 74HC series, which is known for low power consumption and high noise immunity. The device takes three binary weighted address inputs (A0, A1, A2) and activates one of the eight outputs (Y0 to Y7) based on the input combination, while the other outputs remain low. It features three enable inputs (E1, E2, E3) that can be used to control output states, allowing the chip to be used in applications requiring address decoding and demultiplexing.
The 74HC238D operates with a supply voltage ranging from 2V to 6V, making it suitable for a wide range of digital applications. The chip is designed to interface easily with TTL, NMOS, and CMOS logic levels. Its fast switching characteristics make it useful in high-speed applications. Typical uses include memory address decoding, data routing, and signal demultiplexing in microprocessors, communication systems, and other digital circuits. The device is typically packaged in a small outline package (SO) or plastic small outline package (SOIC).

Equivalent

The 74HC238D is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Equivalent products include the CD74HC238, SN74HC238, MC74HC238, and TC74HC238. These chips perform similar functions and are often interchangeable in circuits, though it's crucial to compare datasheets for specific electrical characteristics and pin configurations to ensure compatibility.

Features

The 74HC238D is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Key features include:
1. High-Speed Operation: It operates at a high speed with a typical propagation delay of 15 ns at Vcc = 5V.
2. Wide Supply Voltage Range: Supports a wide voltage range from 2V to 6V, enhancing versatility for various applications.
3. Low Power Consumption: It has low power consumption due to its CMOS technology, making it energy-efficient.
4. Output Capability: The outputs are capable of sinking or sourcing 6 mA at Vcc = 5V, enabling it to drive LEDs or other loads directly.
5. Three Enable Inputs: Comes with three enable inputs (1 active high, 2 active low) to improve control flexibility.
6. High Noise Immunity: Provides high noise immunity due to the use of Schmitt-trigger action at the inputs.
7. Wide Operating Temperature: Suitable for operations in a wide temperature range from -40°C to +125°C.
8. Pin-Compatible: Compatible with other standard logic families, allowing easy integration.
These features make the 74HC238D a versatile choice for applications requiring signal demultiplexing or address decoding.

Pinout

The 74HC238D is a high-speed CMOS 3-to-8 line decoder/demultiplexer. It has a 16-pin count configuration. The primary function of the 74HC238D is to decode a 3-bit binary input into one of eight outputs. It features three address inputs (A0, A1, A2), three chip select inputs (E1, E2, E3), and eight outputs (Y0 to Y7). The device is active-high, meaning that the selected output is high, while all other outputs are low. The chip select inputs are used to enable or disable the device, contributing to more extensive decoding applications by cascading several devices. The 74HC238D is commonly used in memory address decoding, data routing, and as a demultiplexer in various digital applications.

Manufacturer

The 74HC238D is manufactured by Nexperia. Nexperia is a global semiconductor company that specializes in the production of discrete and logic devices, as well as power MOSFETs. It was originally part of NXP Semiconductors but became an independent entity in 2017. Nexperia focuses on efficiency and quality in high-volume production, serving markets such as automotive, industrial, computing, and consumer electronics.

Application

The 74HC238D is a high-speed CMOS 3-to-8 line decoder/demultiplexer. Its primary application areas include digital circuits where decoding or demultiplexing is needed, such as:
1. Microprocessor Memory Systems: Used to select one of many memory or I/O devices.
2. Control Systems: Decoding control signals for activating specific parts of a system.
3. Data Routing: Directing data signals from a single source to multiple destinations.
4. Address Decoding: In embedded systems to expand the addressable memory range.
5. LED/LCD Drivers: Controlling multiple displays or indicators.
6. Communication Systems: Channel selection in multiplexed communication setups.
These applications leverage its ability to handle multiple outputs controlled by fewer inputs efficiently.

Package

The 74HC238D is an integrated circuit with an SOIC (Small Outline Integrated Circuit) package type. It typically comes in a 16-pin SOIC package, which is widely used for surface-mount technology applications.

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