The TC74LCX240FT(EL,K) is an octal buffer/line driver with 3-state outputs manufactured by Toshiba Semiconductor and Storage. This device is part of the LCX family of logic gates, known for their low-voltage operation and high-speed performance. It is commonly used to buffer signals, drive high-capacitance loads, and isolate sections of a digital circuit.

Applications

• Memory interfacing
• Bus driving
• Line driving
• Clock buffering
• Data isolation

Features

• Octal buffer/line driver configuration
• 3-state outputs for bus driving applications
• Low-voltage operation (2.0V to 3.6V)
• High-speed performance (propagation delay typically around 5ns)
• Low power consumption
• TTL-compatible inputs
• Package: TSSOP20 (Thin Shrink Small Outline Package)

Benefits

• Increases signal driving capability for high-capacitance loads.
• Enables bi-directional bus communication with 3-state outputs.
• Reduces power consumption in low-voltage systems.
• Provides fast signal propagation for high-speed applications.
• Simplifies interfacing with TTL logic devices.

Additional Details

The TC74LCX240FT(EL,K) consists of eight independent buffer/line drivers, each with a 3-state output. The 3-state outputs can be in one of three states: logic high, logic low, or high impedance (disconnected). The output enable (OE) input controls the state of all eight outputs. When OE is low, the outputs are enabled and follow the inputs. When OE is high, the outputs are in the high-impedance state, allowing multiple devices to share the same bus. The low-voltage operation of the LCX family makes it suitable for battery-powered devices and other low-power applications. The fast propagation delay ensures minimal signal distortion in high-speed circuits. The EL and K suffixes likely refer to specific tape and reel packaging options. The TSSOP20 package provides a small footprint and good thermal performance for surface mount applications.