The NXP 74F257A is a high-performance, quad 2-input multiplexer with 3-state outputs that is designed to select four bits of data from two sources under the control of a common data select input. The device is part of the 74F series, which is known for its fast switching speeds and high reliability, making it an ideal choice for a wide range of digital applications.

Key Features

• Logic Type: Multiplexer
• Number of Circuits: 4
• Inputs per Circuit: 2
• Output Type: 3-State
• Propagation Delay Time: Typically 4.5ns at 5V
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 4.5V to 5.5V
• Power Consumption: Low power dissipation

Applications

The 74F257A is versatile and can be used in various applications such as:

• Data routing and signal gating
• Function generation
• Arithmetic operations
• Computer memory addressing and decoding

Design Advantages

The NXP 74F257A offers several design advantages, including:

• Its quick switch times allow for high-speed operations, which is essential for modern digital applications.
• The 3-state outputs enable connection to common bus lines, which reduces the need for additional hardware and simplifies design.
• High noise immunity ensures stable performance in electrically noisy environments.
• Compatible with TTL logic levels, making it easy to integrate with other TTL components in a system.

Quality and Reliability

NXP Semiconductors is known for its commitment to quality and reliability. The 74F257A, like all NXP products, is manufactured to meet high standards, ensuring dependable performance in critical applications. It is available in a standard 16-pin DIP or SOIC package, allowing for flexibility in PCB design and compatibility with standard socket and surface mount assembly processes.