EQCO850SC.1

Specialized Overview

The EQCO850SC.1 is a single coax transceiver designed for Fast Ethernet applications over 50Ω coaxial cable infrastructure. It integrates a transmitter and receiver with an adaptive equalizer to support full-duplex bidirectional connections at a data rate of 125 Mbps. The device operates from a single 3.3V supply, consuming approximately 62.5 mA during simultaneous transmission and reception. It features integrated termination resistors and supports Power over Ethernet (PoE). The component is housed in a 16-pin, 4mm QFN package with a 0.65mm pin pitch.

Specialized Feature Summary

• Integrated transmitter and receiver with adaptive equalizer for full-duplex communication over a single coax cable
• Compatible with IEEE 802.3 FX compliant physical layer controllers
• Supports Power over Ethernet distribution alongside data signals
• Includes internal termination resistors to minimize external discrete component count

Specialized Applications

• Industrial and medical camera networks
• Home networking utilizing existing 50Ω coax infrastructure
• TV, set-top box, and PVR inter-room links

Specialized Procurement Notes

Verify the specific ordering suffix (.1 or .3) against current availability as the datasheet indicates End Of Life status for the .1 variant. Confirm that the target application utilizes 50Ω coaxial cabling, as this part is distinct from the 75Ω EQCO875SC series. Ensure compatibility with the required operating temperature range of -10°C to +70°C before procurement.

Specialized Selection Notes

Select the EQCO850SC.1 specifically for systems requiring 50Ω coaxial impedance matching. This model is functionally identical to the EQCO850SC.3 regarding silicon and package but differs in production status. Ensure the connected PHY supports 4B/5B encoding and DC-balanced signals at 125 Mbps. Verify that PoE voltage levels do not exceed the tolerance of the CCUT pin if cable cut detection is utilized.

Specialized Part Context

This component belongs to the EqcoLogic NV single coax transceiver family, distributed by Microchip Technology. It serves as the 50Ω counterpart to the EQCO875SC series, which targets 75Ω systems. Both variants share the same 16-pin QFN package and core functionality, differing primarily in their output termination impedance to match the respective coaxial cable standards.

Specialized Replacement Considerations

The EQCO850SC.3 shares the same silicon and package as the EQCO850SC.1. However, the datasheet lists the EQCO850SC.1 as End Of Life. Verify if the EQCO850SC.3 is available for direct substitution based on current manufacturing qualification status.