DP83910AV

Specialized Overview

The DP83910AV is a CMOS Serial Network Interface (SNI) designed as a direct-pin equivalent to the bipolar DP8391. It provides Manchester data encoding and decoding for IEEE 802.3 Ethernet/Thin-Ethernet LANs, interfacing the DP8390 NIC to the DP8392 CTI or transceiver cable. Operating at 10 Mbit/s, it converts NRZ controller data to differential Manchester signals for transmission and decodes received Manchester data back to NRZ using a Phase Lock Loop. The device includes an on-board crystal oscillator, collision signal translator, and diagnostic loopback. It typically consumes less than 70 mA of current and requires isolation in both Ethernet and thin wire Ethernet applications.

Specialized Feature Summary

• Direct pin-out duplicate of the DP8391 with TTL/MOS compatible controller interface
• Integrated Manchester encoder/decoder with receive clock recovery and squelch circuitry
• Externally selectable half-step or full-step transmit modes for Ethernet I and IEEE 802.3 compatibility
• Diagnostic loopback capability for system integrity testing

Specialized Applications

• IEEE 802.3 Compatible Ethernet Local Area Networks
• Thin-Ethernet (10BASE2) implementations
• 10BASE-T Transceiver Interfaces

Specialized Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm package integrity for the 28-PLCC variant. Ensure design compliance with mandatory isolation requirements specified in the datasheet. Review Texas Instruments discontinuation notices for long-term supply constraints. Validate that external components meet the strict oscillator accuracy specifications required by the standard.

Specialized Selection Notes

Select this component when a functional replacement for the bipolar DP8391 is required in CMOS form factor. Ensure the design supports the necessary isolation transformers for differential signals. Verify that the host controller matches the TTL/MOS interface voltage levels. Confirm that the application environment accommodates the specified operating temperature range and power consumption characteristics.

Specialized Part Context

This part belongs to the DP83910A series of Serial Network Interfaces manufactured by Texas Instruments. It completes the three-chip set alongside the DP8390 NIC and DP8392 CTI to implement a complete network solution. The 'V' suffix denotes the 28-Plastic Chip Carrier package, distinguishing it from the DIP version.

Specialized Replacement Considerations

DP83910AV/63SN is listed as a similar alternative.