The TC74VHCT244AFK is a high-speed CMOS octal bus buffer with TTL-compatible inputs and 3-state outputs from Toshiba Semiconductor and Storage. This device is designed for applications requiring high-speed data transmission and the ability to isolate sections of a bus. The TC74VHCT244AFK features two 4-bit buffer sections with separate output enable controls.

Applications:

• Bus Interfacing
• Memory Addressing
• Data Multiplexing
• Data Transmission
• Digital Systems

Features:

• High-speed operation: tpd = 5.0 ns (typ.) at VCC = 5 V
• Low power dissipation: ICC = 4 µA (max.) at Ta = 25°C
• TTL-compatible input thresholds
• Output drive capability: 15 LSTTL loads
• Symmetrical output impedance: |IOH| = IOL = 12 mA (min.)
• Balanced propagation delays: tPLH ≈ tPHL
• Wide operating voltage range: VCC = 4.5 V to 5.5 V
• Pin and function compatible with 74HCT244

Benefits:

• High Speed: Enables faster data transfer and improved system performance.
• Low Power Consumption: Reduces energy consumption, suitable for battery-powered devices.
• TTL Compatibility: Simplifies interfacing with TTL logic levels.
• High Output Drive: Provides sufficient current to drive multiple bus lines.
• 3-State Outputs: Allows isolating sections of a bus for multiple devices to share the same bus lines.
• Separate Output Enables: Provides flexibility in controlling data flow on different sections of the bus.

Additional Details:

The TC74VHCT244AFK is available in a VSSOP20 (Very Shrink Small Outline Package). The device consists of two 4-bit buffers, each with its own output enable (OE) input. When OE is low, the corresponding buffer is enabled and the outputs follow the inputs. When OE is high, the outputs are in a high-impedance state. All inputs are equipped with protection circuits against static discharge. The device operates over a temperature range of -40°C to +85°C.