DP83950BVQB

Specialized Overview

The DP83950BVQB is a Repeater Interface Controller (RIC) designed for IEEE 802.3 multiport repeater implementations. It integrates 13 network ports, comprising one AUI-compatible port and twelve configurable twisted-pair or external transceiver ports. The device operates on a single 5V supply with a power consumption of 380mA. It functions within an ambient temperature range of 0°C to 70°C. The component is housed in a 160-pin PQFP surface-mount package.

Specialized Feature Summary

• Complies with IEEE 802.3 repeater specifications including segment partition and jabber lockup protection state machines.
• Integrates selectable on-chip twisted-pair transceivers and supports external transceiver bypass for coaxial applications.
• Includes on-chip Manchester encoder/decoder, phase-locked loop, and elasticity buffer for preamble regeneration.
• Provides separate partition state machines per port with status information for LED displays and processor interfaces.

Specialized Applications

• Implementation of IEEE 802.3 compliant multiport repeater units.
• Construction of large hub systems through cascading RICs over an Inter-RIC bus.
• Managed Hub applications utilizing the serial management interface for data collection.

Specialized Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm pinout configuration and package type. Ensure the component meets the required environmental operating temperature range and voltage specifications for the target application design.

Specialized Selection Notes

Select this controller when designing hubs requiring up to 13 connections per chip. Consider the integrated transceiver option for simplified PCB layouts or the external mode if using legacy coaxial media. Verify compatibility with the system processor interface requirements for register access and interrupt handling.

Specialized Part Context

This component belongs to the National Semiconductor RIC family, now part of Texas Instruments' portfolio. It serves as a modular building block for Ethernet networking hardware, specifically enabling the creation of scalable hub architectures by connecting multiple units via the Inter-RIC bus.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.