SN74LS240DWR

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SN74LS240DWR

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IC BUFFER INVERT 5.25V 20-SOIC

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thuộc tính Giá trị
Series 74LS
Part Status Active
Logic Type Buffer, Inverting
Number of Elements 2
Number of Bits per Element 4
Output Type 3-State
Current - Output High, Low 15mA, 24mA
Voltage - Supply 4.75V ~ 5.25V
Operating Temperature 0°C ~ 70°C (TA)
Mounting Type Surface Mount
Package / Case 20-SOIC (0.295", 7.50mm Width)
Supplier Device Package 20-SOIC
Base Product Number 74LS240

Tổng quan

Description

The SN74LS240DWR is an octal buffer/driver with 3-state outputs, part of Texas Instruments' 7400 series of integrated circuits. It is designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device features two sets of four buffers, each with its own output enable control, allowing for selective enabling of output lines. This ensures efficient data transfer and isolation in digital circuits.
The SN74LS240DWR operates with a wide supply voltage range, typically around 5V, and offers low power consumption. With its 3-state outputs, it can effectively connect multiple outputs to a common bus line without interference, provided only one is active at a time. The device is packaged in a 20-pin SOIC (Small Outline Integrated Circuit) for surface mounting, making it suitable for compact PCB designs.
Common applications include memory interfacing, data communication systems, and microprocessor-based equipment. The IC is popular for its reliability, ease of use, and versatility in various digital circuit applications.

Equivalent

The SN74LS240DWR is an octal buffer/line driver with 3-state outputs. Equivalent products include the 74LS240 from manufacturers like Nexperia and ON Semiconductor, as well as the 74HCT240 and 74HC240 which offer similar functionality with different logic families. Always check the datasheets for pin compatibility and electrical characteristics before substitution.

Features

The SN74LS240DWR is an octal buffer and line driver with 3-state outputs, designed for improving both the performance and density of three-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. Here are its key features:
1. Octal Buffer/Driver: Contains eight independent buffer and line driver circuits.
2. 3-State Outputs: Outputs can be in one of three states: high, low, or high-impedance (off), allowing for multiple connections to a common bus.
3. Inverting Logic: Provides inverted output signals, which can be useful for certain applications requiring negated signals.
4. High-Performance: Designed for high-speed and low-power operation, suitable for high-density applications.
5. Wide Supply Voltage Range: Operates on a voltage range typical of TTL ICs, which is usually around 4.75 V to 5.25 V.
6. Integrated Circuit Package: Available in a surface-mount package, part of the Logic family of ICs, facilitating compact and easy integration into various designs.
These features make the SN74LS240DWR well-suited for use in digital circuits where buffering and logic level inversion are needed.

Pinout

The SN74LS240DWR is a part of the SN74LS240 series, which is a group of octal buffer/line drivers with 3-state outputs. The device typically comes in a 20-pin package.
In terms of function, the SN74LS240DWR has the following features:
- It contains eight independent buffers or line drivers.
- It has two sets of four buffers, each set controlled by its own enable input.
- It is designed for asynchronous communication between data buses.
- It offers high drive capability and can drive up to 15 LS-TTL loads.
- The outputs are 3-state, meaning they can be in a high, low, or high-impedance state, allowing for multiplexed applications.
This device is used in situations where you need to buffer a signal or drive a data bus with multiple devices, providing good signal integrity over longer traces or through noisy environments.

Manufacturer

The SN74LS240DWR is manufactured by Texas Instruments (TI). Texas Instruments is an American technology company headquartered in Dallas, Texas. It specializes in designing and manufacturing semiconductors and various integrated circuits, which are used in a wide array of electronic applications, including industrial, automotive, personal electronics, and communications equipment. TI is one of the largest semiconductor companies worldwide and is known for its innovation in analog and embedded processing technologies.

Application

The SN74LS240DWR is an octal buffer/line driver with 3-state outputs, commonly used in digital circuits. Its primary application areas include:
1. Bus Driving: Facilitates communication between microprocessors and peripheral devices by driving data buses.
2. Signal Isolation: Isolates different parts of a circuit to prevent interference.
3. Data Transmission: Enhances signal integrity over longer transmission lines.
4. Address/Data Multiplexing: Used in memory systems to separate address and data lines.
5. Level Shifting: Converts voltage levels between different parts of a system.
6. Clock Distribution: Ensures consistent timing signals across a circuit.
These applications make it suitable for computer systems, communication devices, and instrumentation equipment.

Package

The SN74LS240DWR is a digital integrated circuit from Texas Instruments. It comes in a 20-pin SOIC (Small Outline Integrated Circuit) package type, which is designed for surface-mount technology. The "DWR" suffix indicates this specific package variant suitable for automated assembly processes.

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