SN74LVC244ADWR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low Voltage, CMOS Logic, Octal Bus Buffer
• Package: SOIC-20 (Small Outline Integrated Circuit), Wide Body
• Essence: High-speed, low-power buffer with 3-state outputs
• Packaging/Quantity: Tape and Reel, 2500 pieces 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: ±24mA
• Propagation Delay Time: 4.2 ns (max) at 3.3V
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVC244ADWR has a total of 20 pins, which are assigned as follows:

• Pin 1: Output 1 (Y1)
• Pin 2: Output 2 (Y2)
• Pin 3: Output 3 (Y3)
• Pin 4: Output 4 (Y4)
• Pin 5: Output 5 (Y5)
• Pin 6: Output 6 (Y6)
• Pin 7: Output 7 (Y7)
• Pin 8: Output 8 (Y8)
• Pin 9: Ground (GND)
• Pin 10: Input 1 (A1)
• Pin 11: Input 2 (A2)
• Pin 12: Input 3 (A3)
• Pin 13: Input 4 (A4)
• Pin 14: Input 5 (A5)
• Pin 15: Input 6 (A6)
• Pin 16: Input 7 (A7)
• Pin 17: Input 8 (A8)
• Pin 18: Enable (G)
• Pin 19: Supply Voltage (VCC)
• Pin 20: Output Enable (OE)

Functional Features

• High-speed operation with low power consumption
• 3-state outputs for bus-oriented applications
• Compatible with TTL (Transistor-Transistor Logic) input and output levels
• Supports mixed-mode signal operation on all ports
• Provides protection against electrostatic discharge (ESD)

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Low power consumption helps in reducing overall energy usage - 3-state outputs enable easy interfacing with other devices - Compatibility with TTL ensures versatility in various applications - ESD protection enhances reliability and durability

Disadvantages: - Limited number of buffers/drivers (8 in total) - Propagation delay time may affect real-time applications - Operating temperature range may restrict certain environments

Working Principles

The SN74LVC244ADWR is a buffer/line driver IC that amplifies and controls the signals passing through it. It operates by receiving input signals from the A1 to A8 pins and providing amplified output signals on the Y1 to Y8 pins. The G pin acts as an enable/disable control, while the OE pin enables/disables the outputs.

When the G pin is high, the inputs are enabled, and the outputs follow the input signals. When the G pin is low, the outputs are disabled, and the outputs enter a high-impedance state (3-state). This feature allows multiple devices to share a common bus without interfering with each other.

Detailed Application Field Plans

The SN74LVC244ADWR is widely used in various applications, including:

1. Microprocessor/Controller Interfacing: It acts as a buffer between the microprocessor/controller and other peripheral devices, ensuring proper signal transmission.

2. Memory Systems: It facilitates data transfer between memory modules and the memory controller, enhancing system performance.

3. Communication Systems: It enables efficient signal buffering and line driving in communication systems, such as UART (Universal Asynchronous Receiver-Transmitter) interfaces.

4. Industrial Automation: It plays a crucial role in controlling and interfacing various sensors, actuators, and control devices in industrial automation systems.

5. Automotive Electronics: It is utilized in automotive electronics for signal amplification and driving in applications like engine control units and infotainment systems.

Detailed and Complete Alternative Models

Some alternative models to SN74LVC244ADWR that offer similar functionality are:

1. 74HC244: High-speed CMOS logic octal buffer with 3-state outputs.
2. CD74HCT244: High-speed CMOS logic octal buffer/line driver with 3-state outputs.
3. MC74VHC244: High