74HC245PW

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74HC245PW

Bus Transceivers

  • 제조업체
  • Mfr.부분 #74HC245PW
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사양

개요

Description

The 74HC245PW is an 8-bit bidirectional bus transceiver designed for data communication between two different voltage levels or devices. It features a high-speed CMOS technology, which allows for low power consumption and increased performance compared to traditional logic families. The chip can transmit and receive data, making it ideal for applications requiring parallel data transfer, such as interfacing microcontrollers with peripherals.
Key features include:
- Dual Directionality: It can operate in both send and receive modes, controlled by the direction control pin (DIR).
- High-Speed Operation: Capable of operating at speeds up to 25 MHz.
- 3-State Outputs: The outputs can be set to high, low, or high-impedance (tri-state), allowing multiple devices to share the same bus without interference.
- Wide Supply Voltage Range: Operates typically from 2V to 6V, making it versatile for various applications.
Applications include data bus interfacing, memory buffer, and signal level shifting between different logic families. The 74HC245PW is commonly used in digital circuits due to its reliability and efficiency.

Features

The 74HC245PW is an octal bus transceiver with three-state outputs, designed for high-speed data transmission between devices. Key features include:
1. Voltage Range: Operates from 2V to 6V, suitable for various logic levels.
2. High-Speed Operation: Capable of high-speed switching, with a propagation delay of around 6 ns at 5V.
3. Three-State Outputs: Offers high-impedance outputs, allowing multiple devices to share the same bus without interference.
4. Bidirectional Data Flow: Supports data transmission in both directions, making it versatile for different applications.
5. Control Pins: Includes enable (OE) and direction (DIR) control pins to manage data flow effectively.
6. Low Power Consumption: Consumes minimal power, making it suitable for battery-operated devices.
7. Compact Package: Available in a 20-pin DIP package (74HC245PW) for easy integration into circuits.
These features make the 74HC245PW ideal for applications in data communication, microcontroller interfacing, and bus systems.

Package

The 74HC245PW is packaged in a TSSOP (Thin Shrink Small Outline Package) with 20 pins. It is designed for surface mounting and provides a compact size suitable for space-constrained applications.

Pinout

The 74HC245PW is an octal bus transceiver with 3-state outputs. It has a total of 20 pins. The pin configuration includes:
1. A1-A8 (Pins 2-9): Data inputs from the A bus.
2. B1-B8 (Pins 11-18): Data outputs to the B bus.
3. DIR (Pin 1): Direction control input. When HIGH, data flows from A to B; when LOW, it flows from B to A.
4. OE (Pin 19): Output enable input. When LOW, the outputs are enabled; when HIGH, they are in a high-impedance state.
5. GND (Pin 10): Ground connection.
6. VCC (Pin 20): Positive supply voltage.
The 74HC245PW is commonly used for data buffering, level shifting, and bus systems in digital circuits.

Manufacturer

The 74HC245PW is manufactured by Nexperia, a semiconductor company that specializes in the production of discrete, logic, and MOSFET components. Nexperia was spun off from NXP Semiconductors in 2017 and focuses on providing high-performance, reliable products for various applications, including automotive, industrial, and consumer electronics. As a company, Nexperia emphasizes efficiency in manufacturing and product quality, serving a global market with its extensive portfolio of electronic components.

Application

The 74HC245PW is an octal bus transceiver used for data transmission between devices. Its application areas include:
1. Parallel data communication in microcontroller and microprocessor systems.
2. Bus-oriented applications in digital circuit design.
3. Level shifting between different voltage domains.
4. Memory interfacing and data buffering.
5. Signal isolation and multiplexing in communication systems.
6. General-purpose data transfer in embedded systems.
7. GPIO expansion in various electronic devices.

Equivalent

Equivalent products to the 74HC245PW chip include the 74HCT245, 74ALS245, and 74AS245. Other comparable options may be found in various logic families, such as the 74F245 and 74LVC245, depending on specific application requirements like voltage levels and speed. Always verify specifications for compatibility.

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