Lattice Semiconductor

LC4256B-75TN176I

LC4256B-75TN176I Description

The LC4256B-75TN176I is an obsolete, surface-mount CPLD (Complex Programmable Logic Device) from Lattice Semiconductor's ispMACH® 4000B series. This device is designed for in-system programmability, offering flexibility and ease of integration into various embedded systems. It features 256 macrocells, 16 logic elements/blocks, and 128 I/Os, making it suitable for complex logic functions. The device operates within a voltage supply range of 2.3V to 2.7V and has a maximum propagation delay (tpd) of 7.5 ns, ensuring high-speed performance. It is packaged in a 176-pin TQFP format and is available in tray packaging. The LC4256B-75TN176I is REACH unaffected and classified under ECCN EAR99 and HTSUS 8542.39.0001. It has a moisture sensitivity level (MSL) of 3, allowing for 168 hours of exposure before assembly.

LC4256B-75TN176I Features

• High Logic Density: With 256 macrocells and 16 logic elements/blocks, the LC4256B-75TN176I can handle complex logic functions, making it ideal for applications requiring high-density logic integration.
• In-System Programmability: This feature allows for programming and reprogramming during system operation, providing flexibility and ease of updates without the need for hardware changes.
• Fast Performance: The maximum propagation delay of 7.5 ns ensures high-speed operation, making it suitable for time-critical applications.
• Robust I/O Capability: The device features 128 I/Os, providing ample connectivity options for interfacing with various peripherals and systems.
• Surface-Mount Technology: The surface-mount mounting type ensures reliable and efficient integration into compact and high-density PCB designs.
• Wide Operating Voltage Range: The 2.3V to 2.7V supply voltage range provides compatibility with a variety of power supply configurations.
• Compliance and Safety: The device is REACH unaffected, ensuring compliance with environmental regulations. It also has an MSL of 3, allowing for 168 hours of exposure before assembly, which is beneficial for manufacturing processes.

LC4256B-75TN176I Applications

The LC4256B-75TN176I is well-suited for a range of applications due to its high logic density, fast performance, and robust I/O capabilities. Some specific use cases include:

• Telecommunications: Ideal for implementing complex logic functions in communication systems, such as signal processing, protocol conversion, and interface management.
• Industrial Control: Suitable for industrial automation applications where high-speed logic and reliable I/O connectivity are required, such as in PLCs (Programmable Logic Controllers) and motor control systems.
• Consumer Electronics: Can be used in consumer electronics for tasks like signal routing, display control, and peripheral interfacing, where compact size and high performance are critical.
• Automotive Systems: Applicable in automotive electronics for functions such as engine control, sensor interfacing, and in-vehicle networking, where reliability and high-speed operation are paramount.

Conclusion of LC4256B-75TN176I

The LC4256B-75TN176I from Lattice Semiconductor is a versatile and high-performance CPLD that offers significant advantages for complex logic applications. Its in-system programmability, high logic density, and fast propagation delay make it an excellent choice for a variety of industries, including telecommunications, industrial control, consumer electronics, and automotive systems. Despite being marked as obsolete, the LC4256B-75TN176I remains a reliable and efficient solution for applications requiring robust logic integration and high-speed performance.