SN74LVC244APW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low Voltage, CMOS Logic, Octal Bus Buffer
• Package: TSSOP (Thin Shrink Small Outline Package)
• 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 Channels: 8
• Output Current: ±24 mA
• Propagation Delay Time: 4.2 ns (typical)

Detailed Pin Configuration

The SN74LVC244APW has a total of 20 pins, which are distributed 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

The SN74LVC244APW is a high-speed octal buffer with 3-state outputs. It is designed to drive bus lines in a wide range of applications. The device operates at low voltage levels and offers compatibility with both TTL and CMOS logic levels. The 3-state outputs allow multiple devices to be connected to the same bus without any conflict.

Advantages and Disadvantages

Advantages: - High-speed operation - Low power consumption - Wide supply voltage range - 3-state outputs for bus sharing

Disadvantages: - Limited output current capacity - Not suitable for high-voltage applications

Working Principles

The SN74LVC244APW works by receiving input signals on its eight input pins (A1-A8) and amplifying them to the corresponding output pins (Y1-Y8). The enable pin (G) controls the operation of the device, while the output enable pin (OE) enables or disables the outputs. When the OE pin is high, the outputs are active, and when it is low, the outputs are in a high-impedance state.

Detailed Application Field Plans

The SN74LVC244APW is commonly used in various applications, including:

1. Microprocessor/Controller Interfacing: It can be used to interface microprocessors or controllers with external memory or peripheral devices.
2. Data Communication Systems: It is suitable for driving bus lines in data communication systems, such as UART, SPI, or I2C interfaces.
3. Industrial Automation: The device can be utilized in industrial automation systems for signal buffering and level shifting.
4. Automotive Electronics: It finds applications in automotive electronics for signal amplification and isolation.
5. Consumer Electronics: The SN74LVC244APW is used in various consumer electronic devices, including TVs, audio systems, and gaming consoles.

Detailed and Complete Alternative Models

1. SN74LVCH244A: Similar to SN74LVC244APW but operates at a higher voltage range (1.65V to 3.6V).
2. SN74AHC244: A CMOS logic octal buffer with 3-state outputs, compatible with TTL levels.
3. SN74HCT244: A high-speed CMOS octal buffer with 3-state outputs, suitable for mixed-voltage systems.

These alternative models offer similar functionality but may have different voltage ranges, speed characteristics, or package options.

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