The HD74HC245-T(ELL-E) is an octal bus transceiver with 3-state outputs manufactured by Renesas Electronics America. This device belongs to the HD74HC series, which is known for its high-speed CMOS logic and TTL compatibility. The '245' indicates that this is a transceiver designed to transmit and receive data between two buses. The '(ELL-E)' suffix typically indicates specific packaging and environmental compliance details.

Applications

• Bus Interfacing: Used to interface between two buses in a digital system.
• Data Buffering: Employed as a buffer to isolate and protect data lines.
• Memory Interfacing: Used to interface memory devices with a microprocessor or microcontroller.
• I/O Port Expansion: Suitable for expanding the number of I/O ports in a microcontroller system.
• Bi-Directional Data Transfer: Supports bi-directional data transfer between two systems.

Features

• Octal Transceiver: Provides eight channels for simultaneous data transfer.
• 3-State Outputs: Offers 3-state outputs, allowing for bus isolation when the device is disabled.
• High-Speed Operation: Operates at high speeds, suitable for fast data transfer applications.
• TTL Compatible Inputs: Inputs are compatible with TTL (Transistor-Transistor Logic) voltage levels.
• Wide Operating Voltage Range: Operates over a wide voltage range, typically from 2V to 6V.
• Low Power Dissipation: Minimizes power consumption for energy-efficient operation.
• Surface Mount Package: Comes in a surface mount package for easy integration into circuit boards.

Benefits

• Efficient Bus Interfacing: Provides efficient data transfer between two buses.
• Bus Isolation: 3-state outputs allow for bus isolation when the device is disabled.
• High-Speed Data Transfer: High-speed operation enables fast data transfer.
• Flexible Voltage Operation: Wide operating voltage range allows for use in various systems.
• Energy-Efficient Operation: Low power dissipation reduces energy consumption.

Additional Details

The HD74HC245-T(ELL-E) has a direction control input (DIR) that determines the direction of data transfer. The output enable input (OE) controls the state of the outputs. When OE is high, the outputs are in a high-impedance state. Detailed specifications, including timing parameters, electrical characteristics, and package dimensions, can be found in the Renesas datasheet for the HD74HC245. The 'T(ELL-E)' suffix usually denotes specific packaging or environmental compliance details (e.g., tape and reel packaging for automated assembly, or lead-free construction).