74HC245BQ

圖片僅供參考

74HC245BQ

+物料清單

Nexperia

  • 製造商Nexperia

  • 製造商部分 #74HC245BQ

  • 有存貨23187

365 天品質保證

7*24 小時服務保證

90-日售後保障

正品保證

規格

屬性 價值

概述

Description

The 74HC245BQ is a high-speed CMOS device from the 74HC family, commonly used as an octal bus transceiver with 3-state outputs. It is designed for asynchronous two-way communication between data buses and can drive up to 15 LSTTL loads. The device features two data direction pins (DIR and OE) that control the direction of data flow and enable or disable the outputs, respectively.
Key features of the 74HC245BQ include:
1. Bidirectional Data Transfer: Allows data to flow both ways by toggling the direction control pin (DIR).
2. 3-State Outputs: Provides high, low, and high-impedance output states, which is useful for bus-oriented applications.
3. CMOS Technology: Offers low power consumption and high noise immunity.
4. Wide Supply Voltage Range: Typically operates from 2V to 6V.
5. High-Speed Operation: Designed for high-speed data transmission.
It's commonly used in microcontroller and microprocessor systems where efficient data management between components is necessary. The 74HC245BQ is suitable for use in various applications, including computing, networking, and consumer electronics.

Equivalent

The 74HC245BQ is an octal transceiver with 3-state outputs. Equivalent products include:
1. SN74HC245 from Texas Instruments
2. CD74HC245 from Texas Instruments
3. MC74HC245 from ON Semiconductor
4. NXP 74HC245D
5. HCF245 from STMicroelectronics
These chips offer similar functionality and pin configuration, often used for bidirectional data transfer between buses. Always verify the datasheet to ensure compatibility with your specific application.

Features

The 74HC245BQ is an octal transceiver with 3-state outputs, designed for asynchronous two-way data communication between data buses. It features high-speed CMOS technology and is compatible with TTL outputs. Key features include:
1. Bidirectional Communication: It allows for the transfer of data in both directions, making it versatile for various applications.
2. 3-State Outputs: The outputs can be in a high, low, or high-impedance state, facilitating connection to a common bus line without causing interference.
3. Enable/Disable Function: It includes a direction control (DIR) and an output enable (OE) input for easy control over data flow direction and output driving.
4. Wide Operating Voltage: Operates over a voltage range of 2.0 V to 6.0 V, offering flexibility for different system requirements.
5. High Noise Immunity and Low Power Consumption: Ensures reliable performance in noisy environments while maintaining low power usage.
6. Standard Pin Configuration: Compatible with industry-standard pin layouts for seamless integration into existing designs.
The 74HC245BQ is commonly used in applications requiring efficient data bus management and interfacing between different logic levels.

Pinout

The 74HC245BQ is an 8-bit transceiver with three-state outputs. It is used for asynchronous bidirectional data transfer between two buses. The device features:
- Pin Count: 20 pins.
- Functionality: It allows the transmission of data between two separate buses, typically denoted as bus A and bus B.
Key Pin Functions:
- V_CC (Pin 20): Power supply pin.
- GND (Pin 10): Ground pin.
- A1-A8 (Pins 2-9): Data inputs/outputs for bus A.
- B1-B8 (Pins 18-11): Data inputs/outputs for bus B.
- DIR (Pin 1): Direction control pin. Determines the direction of data flow (from A to B or B to A).
- OE (Pin 19): Output enable pin. When low, it enables the transceiver function; when high, it disables the outputs (three-state).
The 74HC245BQ is used in digital systems for bus interfacing, allowing for controlled data flow in either direction as required by the system design.

Manufacturer

The 74HC245BQ is manufactured by Nexperia. Nexperia is a global semiconductor company headquartered in Nijmegen, Netherlands. It specializes in producing discrete and MOSFET components, logic devices, and analog ICs. Originally part of NXP Semiconductors, Nexperia was spun off as a separate entity in 2017. The company focuses on efficiency, robust manufacturing processes, and high-volume production, supplying essential components used in automotive, industrial, computing, and consumer applications.

Application

The 74HC245BQ is an 8-bit transceiver with 3-state outputs, commonly used in digital circuits for data bus interfacing. Key application areas include:
1. Microcontroller Systems: Facilitates data transfer between microprocessors and peripheral devices.
2. Memory Interfacing: Enables communication between memory modules and processing units.
3. Data Communication: Used in systems requiring bidirectional data flow.
4. Buffering: Provides signal buffering to prevent loading effects, ensuring data integrity.
5. Bus Isolation: Isolates different parts of a system to allow for independent operation and prevent bus contention.
These applications leverage the device's ability to control data direction and manage multiple data lines efficiently.

Package

The 74HC245BQ is typically available in an SO20 package, which is a 20-lead small outline package. This type of package is surface-mount and suitable for compact designs in various electronic applications.

與74HC245BQ相關的產品