The TC74VHCT540AFTEK is an Octal Buffer/Line Driver with 3-State Outputs manufactured by Toshiba Semiconductor and Storage. This device belongs to the VHCT (Very High-Speed CMOS with TTL-compatible inputs) family, combining high-speed operation with TTL input compatibility. The 3-state outputs allow for bused applications where multiple devices share a common bus.

Applications:

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

Features:

• High-speed operation: tpd = 5.3 ns (typ.) at VCC = 5 V.
• Low power dissipation: ICC = 4 μA (max.) at VCC = 5 V.
• Wide operating voltage range: VCC = 4.5 V to 5.5 V.
• TTL input voltage levels.
• 3-State outputs for bus applications.
• Octal buffer configuration.
• TSSOP (Thin Shrink Small Outline Package) for surface mounting.

Benefits:

• High-speed data transfer due to short propagation delay.
• Reduced power consumption, especially important for battery-powered devices.
• TTL compatibility facilitates interfacing with existing TTL systems.
• 3-State outputs enable multiple devices to share the same bus without contention.
• TSSOP package allows for compact designs and efficient board utilization.

Technical Specifications:

The TC74VHCT540AFTEK operates within a supply voltage range of 4.5V to 5.5V. It has a typical propagation delay of 5.3ns at 5V. The inputs are TTL compatible, simplifying interfacing with TTL logic. The 3-state outputs provide high impedance when disabled, allowing other devices to drive the bus. The device is packaged in a TSSOP package suitable for surface mount assembly. The operating temperature range is typically -40°C to +85°C.

The VHCT series is ideal for applications requiring a high-speed buffer with TTL compatibility and the ability to share a common bus. The TC74VHCT540AFTEK offers excellent performance in a compact TSSOP package.