The 54HCT240/BRAJC is a high-speed CMOS octal buffer/line driver with inverted 3-state outputs manufactured by Freescale Semiconductor (now NXP Semiconductors). The 54HCT series is designed for high-speed operation and is TTL compatible, meaning it can interface directly with TTL logic levels. The '240' designation indicates its specific logic function: an octal buffer with inverted outputs and 3-state control. 3-state outputs allow the device to be in a high, low, or high-impedance state.

Applications:

• Memory address drivers
• Clock drivers
• Line drivers
• Bus interface
• Data transmission

Features:

• High-speed CMOS logic
• Octal buffer/line driver configuration
• Inverted outputs
• 3-state outputs
• TTL compatible inputs
• Wide operating voltage range (4.5V to 5.5V)

Benefits:

• Fast propagation delays
• High output drive capability
• Enables isolation of devices from a bus
• Direct interface with TTL logic
• Reliable performance

Additional Details:

The 54HCT240/BRAJC is designed to drive high-capacitance loads and is commonly used as a memory address driver or bus driver. The 3-state outputs are controlled by an enable input. When the enable input is low, the outputs are active and the device functions as an inverting buffer. When the enable input is high, the outputs are in a high-impedance state, effectively disconnecting the device from the bus. This allows multiple devices to share the same bus. The TTL compatible inputs allow the device to be directly interfaced with TTL logic without the need for external level shifting. Consult the datasheet for detailed electrical characteristics, timing diagrams, and application notes. The octal configuration means that there are eight independent buffer/driver circuits within a single package.