The 54F38FMQB is a Quad 2-Input NAND Buffer with Open-Collector Outputs, manufactured by National Semiconductor (now Texas Instruments). This device is part of the Fairchild Advanced Schottky TTL (FAST) logic family, providing high speed and improved performance. It is designed for applications requiring a buffered NAND function with the flexibility of open-collector outputs for wired-OR logic or driving higher voltage loads.

Applications

• Wired-OR Logic: Used to implement wired-OR logic functions by connecting the open-collector outputs together.
• Bus Driving: Can drive bus lines with appropriate pull-up resistors.
• Interfacing with Higher Voltage Systems: Used to interface with systems operating at higher voltage levels.
• Memory Addressing: Can be implemented in memory addressing schemes.
• Military and Aerospace Applications: The '54' designation signifies suitability for military temperature ranges and high-reliability applications.

Features

• Quad 2-Input NAND Buffer: Contains four independent 2-input NAND buffers.
• Open-Collector Outputs: Provides open-collector outputs for wired-OR logic and interfacing with different voltage levels.
• High-Speed Operation: Offers high-speed performance due to the FAST technology.
• TTL Compatibility: Compatible with TTL logic levels.
• Military Temperature Range: Operates over a wide temperature range suitable for military applications.

Benefits

• Flexible Logic Design: Open-collector outputs allow for flexible logic design and implementation.
• Interfacing Capability: Can interface with systems operating at different voltage levels.
• High Performance: Provides high speed and reliable performance.
• Easy Integration: TTL compatibility simplifies integration with existing digital systems.
• Wired-OR Implementation: Simplifies the implementation of wired-OR logic functions.

Additional Details

The 54F38FMQB is typically packaged in a flatpack package. The 'QB' suffix indicates that it meets specific quality and reliability requirements, often associated with military or high-reliability applications. It operates with a supply voltage of 5V. The open-collector outputs require external pull-up resistors. The device incorporates internal protection circuitry to prevent damage from electrostatic discharge (ESD).