DP83953VUL

Specialized Overview

The DP83953VUL is a Repeater Interface Controller with Security Features, Internal Drivers and Integrated Filters (RIC2A). It integrates driver and filter circuitry into the RIC II design. The device features thirteen network interface ports: one AUI compatible port and twelve IEEE 802.3 10BASE-T compatible ports with built-in drivers and analog transmit filters. It operates on a single 5V supply.

Specialized Feature Summary

• Integrates transmit filters and drivers on a per-port basis to facilitate EMI compliance without additional components.
• Provides security features using on-chip CAMs to prevent unauthorized eavesdropping and intrusion on a per-port basis.
• Supports cascading for larger hub applications via an Inter-RIC bus without introducing additional repeater hops.
• Includes separate partition state machines for each port and on-chip event counters for network statistics gathering.

Specialized Applications

• Managed repeater solutions compliant with IEEE 802.3 Repeater Specifications.
• Hub management applications requiring port status information and processor interfaces.
• Cascaded repeater systems constructed by connecting multiple RIC2A devices.

Specialized Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity upon receipt. Check for obsolescence status as the datasheet indicates this product may be obsolete. Ensure compatibility with existing system designs due to pin definition changes from previous generations.

Specialized Selection Notes

Select this component for managed hub designs requiring integrated physical layer drivers. Note that it is not a drop-in replacement for the DP83952 due to modified pin definitions and rearranged power/ground locations. Consider the increased current drive requirements necessary to implement the integrated drivers and transmit filters compared to earlier models.

Specialized Part Context

The DP83953 (RIC2A) is an enhanced version of the DP83952 (RIC II). It was originally manufactured by National Semiconductor Corporation before its acquisition by Texas Instruments. The device represents a specific generation of Ethernet repeater controllers designed for 10BASE-T networks with integrated security logic.

Specialized Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet explicitly states that the RIC2A is not a drop-in replacement for the RIC II due to modified pin definitions and power/ground pin rearrangements.