74LVC245ABQ

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74LVC245ABQ

+物料清單

Bus Transceivers

  • 製造商Nexperia

  • 製造商部分 #74LVC245ABQ

  • 有存貨8361

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概述

Description

The 74LVC245ABQ is an octal bus transceiver with 3-state outputs, part of the LVC family known for low-voltage, high-speed digital logic. It is designed to operate with a supply voltage range of 1.2V to 3.6V, making it suitable for both standard 5V TTL and low voltage CPU interface applications. The device is commonly used to interface between different parts of a system, allowing data transfer between buses.
Key features include:
1. Direction Control: It has a direction control pin (DIR) that determines the direction of data flow.
2. Output Enable: The output enable pin (OE) controls the 3-state outputs, allowing for connected outputs to be placed in a high-impedance state.
3. Low Power Consumption: It offers significant power savings due to its low static power dissipation.
4. High-Speed Operation: The device is designed for high-speed data communications.
The 74LVC245ABQ is often employed in computing, telecommunications, and various electronic applications that require efficient data buffering and level translation.

Equivalent

The 74LVC245ABQ is a transceiver IC. Equivalent products include:
1. SN74LVC245A from Texas Instruments
2. MC74LCX245 from ON Semiconductor
3. 74HC245 from Nexperia
4. 74LV245 from STMicroelectronics
These equivalents may have variations in specifications like voltage levels or package types, so it's important to verify compatibility based on the specific application requirements.

Features

The 74LVC245ABQ is an octal bus transceiver with 3-state outputs, designed for asynchronous two-way data communication between data buses. It features:
1. Voltage Range: Operates from 1.2V to 3.6V, making it suitable for both low and high voltage applications.
2. 3-State Outputs: Allows for connection to multiple bus lines without interference, as outputs can be in a high-impedance state.
3. Direction Control: The DIR pin determines the direction of data flow, either from A to B or B to A.
4. Output Enable: The OE pin controls the transceiver function, enabling or disabling data flow.
5. Low Power Consumption: Incorporates CMOS technology that reduces power usage, ideal for battery-powered devices.
6. High-Speed Operation: Capable of fast signal processing, suitable for modern high-speed systems.
7. Overvoltage Tolerance: Tolerant of up to 5.5V on input pins, which protects against voltage spikes.
8. Schmitt-Trigger Action: Provides better noise immunity and stable operation in noisy environments.
These features make the 74LVC245ABQ suitable for varied data communication needs in computing and electronic systems.

Pinout

The 74LVC245ABQ is an octal transceiver with 3-state bus-compatible outputs, designed for asynchronous two-way communication between data buses. It has a total of 20 pins. Here’s a quick breakdown of its pin functions:
1. A0-A7 (Pins 2-9): These are the data inputs/outputs for one side of the transceiver (bus A).
2. B0-B7 (Pins 18-11): These are the data inputs/outputs for the other side of the transceiver (bus B).
3. DIR (Pin 1): Direction control input. It determines the direction of data flow. When DIR is high, data flows from A to B. When DIR is low, data flows from B to A.
4. OE (Pin 19): Output Enable input. When OE is low, the transceiver is operational. When OE is high, all outputs are in a high-impedance state, effectively disconnecting them from the buses.
5. VCC (Pin 20): Supply voltage pin.
6. GND (Pin 10): Ground pin.
The 74LVC245ABQ is commonly used in digital circuits where bidirectional communication is needed between buses.

Manufacturer

The 74LVC245ABQ is manufactured by Nexperia. Nexperia is a global semiconductor company that specializes in producing discrete and MOSFET components, as well as logic devices. Originally part of NXP Semiconductors, Nexperia became an independent entity in 2017 following its acquisition by Chinese investors led by Wingtech Technology. The company focuses on efficiency and performance, providing essential components that facilitate various electronic devices and systems. Nexperia operates worldwide, serving industries such as automotive, industrial, computing, and consumer electronics.

Application

The 74LVC245ABQ is a high-speed CMOS octal bus transceiver with 3-state outputs, designed for asynchronous communication between data buses. Its application areas include:
1. Microcontroller Interfacing: Facilitates communication between microcontrollers and peripheral devices.
2. Memory Module Interfacing: Used in communication between memory modules and processors.
3. Data Communication Systems: Employed in systems requiring direction-controlled data transfer.
4. Level Shifting: Converts signals between different voltage levels.
5. Consumer Electronics: Utilized in devices requiring efficient and compact data management.
6. Instrumentation: Assists in signal routing and data management in measurement devices.
Its features, such as low power consumption and high-speed operation, make it suitable for these applications.

Package

The 74LVC245ABQ is typically available in a DHVQFN package, which stands for Dual Flat No-Lead Very Thin Quad Flat Package. This package type is compact, offering a small footprint and low profile suitable for high-density applications.

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