SN74LVC244ADBR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low Voltage, CMOS Logic, Octal Bus Buffer
• Package: SSOP-20
• Essence: High-speed, low-power buffer with 3-state outputs
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 80 MHz
• Number of Buffers/Drivers: 8
• Output Current: ±24 mA
• Propagation Delay Time: 4.2 ns (max) at 3.3V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVC244ADBR has a total of 20 pins, arranged as follows:

__ __ A1 |1 \__/ 20| VCC A2 |2 19| OE# B1 |3 18| B1 B2 |4 17| A1 A3 |5 16| B2 A4 |6 15| A2 B3 |7 14| GND B4 |8 13| B3 GND |9 12| A3 Y1 |10 11| B4 ‾‾ ‾‾

Functional Features

• High-speed operation allows for efficient data transfer.
• Low power consumption makes it suitable for battery-powered devices.
• 3-state outputs enable bus sharing and reduce contention.
• Supports bidirectional data flow.

Advantages

• Wide supply voltage range allows for compatibility with various systems.
• High output current capability enables driving capacitive loads.
• 3-state outputs provide flexibility in bus design.
• Low propagation delay time ensures fast signal transmission.

Disadvantages

• Limited number of buffers/drivers (8) may not be sufficient for complex applications.
• Operating temperature range (-40°C to +85°C) may not be suitable for extreme environments.
• SSOP-20 package may require careful handling during assembly.

Working Principles

The SN74LVC244ADBR is a CMOS logic buffer that operates at low voltages. It receives input signals and amplifies them to drive output lines. The 3-state outputs allow the device to be connected to a common bus, enabling multiple devices to share the same communication lines. When the output enable (OE#) pin is high, the outputs are in the high-impedance state, effectively disconnecting them from the bus.

Detailed Application Field Plans

The SN74LVC244ADBR is commonly used in various applications, including:

1. Microcontrollers: It can be used to interface microcontrollers with external devices, such as sensors, displays, or memory modules.
2. Communication Systems: It is suitable for buffering and line driving in communication systems, ensuring reliable signal transmission.
3. Industrial Automation: The IC can be utilized in industrial automation systems for signal conditioning and level shifting.
4. Automotive Electronics: It finds application in automotive electronics for interfacing different components and driving bus lines.
5. Consumer Electronics: The buffer is used in consumer electronic devices like TVs, set-top boxes, and gaming consoles for signal amplification and bus control.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the SN74LVC244ADBR are:

1. SN74LVC244A: This is the non-inverting version of the SN74LVC244ADBR.
2. 74HC244: A popular alternative from the 74HC series, which operates at higher voltages.
3. CD74HCT244: A CMOS buffer with TTL-compatible inputs and higher output current capability.

These alternatives can be considered based on specific requirements and compatibility with existing systems.

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