The TC74HC7244AP is an octal buffer/line driver with 3-state outputs belonging to the TC74HC series of high-speed CMOS logic devices manufactured by Toshiba Semiconductor and Storage. This device features non-inverting outputs and is designed to improve both the performance and density of high-speed memory systems. The 3-state outputs allow for multiple devices to share a common bus, making it suitable for bus-oriented applications. The key difference between the '240 and '244 is the pinout, with the '244 having separate enables for each set of four buffers.

Applications

• Memory address drivers: Used to drive the address lines of memory systems, providing sufficient current for reliable operation.
• Data bus buffering: Employed to isolate and buffer data lines on a data bus, preventing signal degradation.
• I/O port expansion: Provides additional I/O ports for microcontrollers or microprocessors.
• Logic level translation: Used to convert logic levels between different systems.
• Backplane drivers: Implemented in backplane systems to drive signals across the backplane.

Features

• High-speed operation: Offers fast propagation delay times due to the CMOS technology.
• Wide operating voltage range: Functions reliably with supply voltages from 2V to 6V.
• Low power consumption: Minimizes power requirements, making it suitable for battery-powered applications.
• Octal buffer: Contains eight independent buffers/line drivers.
• 3-state outputs: Allows outputs to be in a high, low, or high-impedance state.
• Non-inverting outputs: Outputs are the same logic level as the inputs.
• Dual Output Enable (OE): Offers two control inputs, each enabling or disabling four outputs.
• Package: Available in DIP package.

Benefits

• Increased system performance: High-speed operation minimizes delays in data transfer.
• Improved signal integrity: Buffers isolate and strengthen signals, reducing noise and distortion.
• Enhanced system flexibility: 3-state outputs allow multiple devices to share a common bus.
• Reduced power consumption: Low power requirements extend battery life in portable devices.
• Easy integration: Standard logic levels and packaging facilitate integration into existing systems.

Additional Details

The TC74HC7244AP utilizes CMOS technology, ensuring low static power dissipation. The output is designed to drive moderate capacitive loads. The operating temperature range is typically -40°C to +85°C. Detailed electrical characteristics, including input and output voltage levels, current consumption, and switching speeds, are available in the product datasheet. The dual enable pins offer added flexibility in controlling the output.