DP83257VF

Controllers Overview

The DP83257VF is an FDDI Physical Layer Controller (PLAYER) device manufactured by National Semiconductor. It implements a complete Physical Layer entity as defined by the Fiber Distributed Data Interface standards. The component is housed in a 160-BFQFP package, specifically identified as a 160-QFP with dimensions of 28x28 mm. This integrated circuit serves as the interface controller for Fiber Distributed Data Interface networks, managing the physical layer signaling and data transmission requirements for compliant systems.

Controllers Feature Summary

• Implements a complete Physical Layer entity for Fiber Distributed Data Interface
• Functions as a PLAYER device for FDDI network integration
• Provides dedicated interface control for fiber optic data transmission

Controllers Applications

• Fiber Distributed Data Interface network implementations
• Physical layer controller design for FDDI stations
• High-speed fiber optic communication system interfaces

Controllers Procurement Notes

Verify the manufacturer origin, as National Semiconductor assets are managed by Texas Instruments. Confirm the specific package variant matches the 160-BFQFP specification. Ensure compatibility with existing FDDI infrastructure requirements before procurement. Check for obsolescence status given the age of the technology.

Controllers Selection Notes

Select this component only when designing or maintaining legacy FDDI systems requiring a dedicated physical layer controller. The 160-pin QFP package requires appropriate PCB layout considerations for high pin count density. Evaluate if the specific PLAYER functionality aligns with the network topology requirements.

Controllers Part Context

This device belongs to the class of FDDI controllers designed for implementing the physical layer of fiber optic networks. It is part of the broader family of interface controllers used in enterprise and industrial networking environments prior to the widespread adoption of Ethernet-based solutions.

Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Legacy FDDI components often require direct replacement with identical part numbers due to specific protocol implementation requirements.