74HC240D,653 Octal Inverting Buffer/Line Driver | High-Speed CMOS | SOIC-20 SMD

Description

The 74HC240 is a high-speed, silicon-gate CMOS octal buffer/line driver featuring 3-state outputs. It contains eight independent inverting buffers organized into two 4-bit groups. Each group is controlled by a separate active-LOW Output Enable (OE-bar) input, allowing for high-efficiency bus management.

When the Output Enable is LOW, the buffer inverts the input signal and drives the output. When the Output Enable is HIGH, the outputs enter a high-impedance (high-Z) state, effectively disconnecting the IC from the data bus. This design is specifically tailored for applications requiring bus-oriented communication, memory address driving, and signal inversion in high-density digital systems.

Note: Product images are shown for reference only. The actual product may vary in appearance, manufacturer marking, or logo depending on stock availability.

Features

• Octal (8) inverting buffers
• 3-state outputs for clean bus sharing
• Two separate active-LOW Output Enable (OE-bar) controls (one for each 4-bit group)
• High-speed CMOS (HC) technology
• Wide operating voltage range (2V to 6V)
• Compact SOIC-20 surface-mount package

Benefits

• Inverting logic eliminates the need for external NOT gates in many bus architectures
• High current drive capability is ideal for long or capacitive PCB traces
• Independent group control simplifies bus arbitration
• Excellent noise immunity and low power draw characteristic of the HC series

Applications

• Inverting Data Bus Drivers
• Memory Address Bus Buffering
• Microprocessor System Bus Expansion
• Clock Distribution with Signal Inversion
• Peripheral Interface Control

Package Includes

• 1 x 74HC240D,653 Octal Inverting Buffer/Line Driver IC (SOIC-20 SMD)

Specifications