SN74HC245DW

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SN74HC245DW

+BOM

IC TXRX NON-INVERT 6V 20-SOIC

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  • 제조업체 부품 #SN74HC245DW

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사양

속성 가치
Series 74HC
Part Status Obsolete
Base Product Number 74HC245
Logic Type Transceiver, Non-Inverting
Number of Elements 1
Number of Bits per Element 8
Output Type 3-State
Current - Output High, Low 7.8mA, 7.8mA
Voltage - Supply 2V ~ 6V
Operating Temperature -40°C ~ 85°C (TA)
Mounting Type Surface Mount
Package 20-SOIC (0.295", 7.50mm Width)
Supplier Device Package 20-SOIC
Packaging Bulk, Tube

개요

Description

The SN74HC245DW is a high-speed CMOS octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. It belongs to the 74HC series, which is known for low power consumption and high noise immunity. This device features two-way communication between data buses, making it ideal for interfacing and data transfer between different parts of a digital system.
The SN74HC245DW can operate in both send and receive modes, controlled by a direction input (DIR) and an output enable input (OE). When OE is low, the device is enabled, allowing data transmission. DIR determines the direction of data flow, either from A to B or B to A. When OE is high, the outputs are in a high-impedance state, effectively isolating the buses.
Operating voltage ranges from 2V to 6V, and the device is designed for use in TTL systems. It comes in a 20-pin SOIC package, making it suitable for a variety of applications such as memory interfacing, microprocessor-based systems, and communication systems.

Equivalent

The SN74HC245DW is an octal bus transceiver with 3-state outputs. Equivalent products include the CD74HCT245, TC74HC245A, and 74HC245 from various manufacturers like Nexperia, ON Semiconductor, and Fairchild. These equivalents typically offer similar functionalities in terms of voltage, pin configuration, and logic operations, though differences in performance specifications may occur. Always verify datasheets to ensure compatibility with specific applications.

Features

The SN74HC245DW is an octal bus transceiver from Texas Instruments with three-state outputs. It is designed for asynchronous two-way communication between data buses. Key features include:
1. Bidirectional Data Transfer: It facilitates bidirectional data flow with separate control inputs for direction and output enable.
2. Three-State Outputs: This allows multiple devices to connect to the same bus line by enabling high-impedance states.
3. High-Speed CMOS Technology: Offers fast switching speeds with low power consumption, suitable for high-performance applications.
4. Wide Operating Voltage Range: Compatible with a range from 2V to 6V, providing flexibility in different system designs.
5. High Noise Immunity: Ensures reliable operation in noisy environments.
6. Output Drive Capability: Features balanced drive capability with up to 6 mA output at 5V.
7. Low Power Consumption: Designed for low power dissipation, making it energy efficient.
8. Industry Standard Pinout: 20-pin SOIC package, which is beneficial for ease of integration into existing designs.
These features make the SN74HC245DW suitable for a variety of applications requiring efficient data transmission between system components.

Pinout

The SN74HC245DW is an octal (8-bit) bidirectional bus transceiver with 3-state outputs, designed for asynchronous two-way communication between data buses. It features 20 pins in a small-outline integrated circuit (SOIC) package.
Key pins and functions include:
- Pins 2-9 (A1-A8): Data bus A.
- Pins 11-18 (B1-B8): Data bus B.
- Pin 1 (DIR): Direction control. Determines data flow direction between buses. High for A-to-B, low for B-to-A.
- Pin 19 (OE̅): Output enable. Active low. Disables outputs when high, placing them in a high-impedance state.
- Pin 10 (GND): Ground.
- Pin 20 (VCC): Positive supply voltage.
The SN74HC245DW is commonly used in digital systems for bus interfacing and data isolation. Its high-speed CMOS technology allows for low power consumption and compatibility with TTL logic levels, making it suitable for various applications requiring bidirectional data transfer and bus buffering.

Manufacturer

The SN74HC245DW is manufactured by Texas Instruments (TI), a global semiconductor company. Texas Instruments is renowned for designing and manufacturing a wide array of electronic components and integrated circuits used in various applications, including analog electronics, embedded processing, and digital logic devices. The company is headquartered in Dallas, Texas, and has a long history of innovation in the semiconductor industry, providing solutions for industries such as automotive, industrial, personal electronics, and communications.

Application

The SN74HC245DW is a high-speed CMOS octal bus transceiver designed for bidirectional data communication between different parts of a digital system. Its primary application areas include:
1. Microcontroller and microprocessor interfacing: Facilitates communication between CPUs and peripheral devices.
2. Memory systems: Used in data path management within RAM or ROM systems.
3. Data buses: Enables efficient data transfer across data buses in computing and communication devices.
4. Signal buffering: Acts as a buffer to strengthen weak signals in long-distance communication.
5. Logic level translation: Converts logic levels for compatibility between different voltage domains.
These features make it suitable for use in computers, industrial equipment, and consumer electronics.

Package

The SN74HC245DW is a high-speed CMOS octal bus transceiver with 3-state outputs. The package type "DW" indicates it is in a 20-pin SOIC (Small Outline Integrated Circuit) wide body package, which is a surface-mount package suitable for automated assembly.

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