SN74LV244ATDWR

The SN74LV244ATDWR is a high-speed, low-voltage octal buffer/driver designed by Texas Instruments. It is part of the 74LV family of logic devices, which are known for their low power consumption and high-speed performance. Here’s a detailed description of its features and specifications:

General Description:

• Functionality: The SN74LV244A is an octal buffer/driver with 3-state outputs. It is designed to drive capacitive loads and can be used in various applications, including data routing, signal buffering, and interfacing between different logic families.
• Logic Family: It belongs to the Low-Voltage CMOS (LV) logic family, which operates at lower supply voltages while maintaining high-speed performance.

Key Features:

• Number of Channels: The device contains eight independent buffer/driver channels, allowing it to handle multiple signals simultaneously.
• 3-State Outputs: Each output can be in one of three states: high, low, or high-impedance (floating), which is useful for bus-oriented applications.
• Supply Voltage: It operates with a supply voltage range of 2.0V to 5.5V, making it compatible with a variety of low-voltage systems.
• Input Voltage Levels: The input voltage levels are compatible with both TTL and CMOS logic levels, providing versatility in interfacing with different devices.
• Propagation Delay: The device features a low propagation delay, typically around 4.5 ns at 5V, which allows for fast signal transmission.
• Power Consumption: The SN74LV244A is designed for low power consumption, making it suitable for battery-operated devices and energy-efficient applications.

Pin Configuration:

• The SN74LV244ATDWR is available in a 20-pin TSSOP (Thin Shrink Small Outline Package) form factor, which is compact and suitable for surface-mount applications. The pin configuration includes:
  • Inputs (A1 to A8): These are the data inputs for the buffer/driver.
  • Outputs (Y1 to Y8): These are the corresponding outputs that reflect the state of the inputs.
  • Enable Pins (OE): The output enable pin controls the activation of the outputs. When enabled, the outputs reflect the inputs; when disabled, the outputs are in a high-impedance state.

Electrical Characteristics:

• Input and Output Voltage Levels: The device is designed to recognize input voltages as low as 0.8V for a logic high and as high as 2.0V for a logic low when powered at 5V.
• Output Drive Capability: The outputs can drive a load of up to 64 mA, making it suitable for driving LEDs or other components directly.

Applications:

• The SN74LV244ATDWR is commonly used in applications such as:
  • Data bus buffering
  • Signal isolation
  • Level shifting between different voltage domains
  • General-purpose logic interfacing

Conclusion:

The SN74LV244ATDWR from Texas Instruments is a versatile and efficient octal buffer/driver that provides reliable performance in low-voltage applications. Its combination of high-speed operation, low power consumption, and compatibility with various logic levels makes it an ideal choice for modern electronic designs.