EQCO125T40C1-I/8EX

Overview

The EQCO125T40C1-I/8EX is a single-chip equalizer, driver, and reclocker designed for high-speed asymmetric full-duplex communication. It supports downstream bit-rates from 1.25 Gbps to 12.5 Gbps and simultaneous uplink signaling at 20.833 Mbps or 41.666 Mbps using 8b/10b coding. The device operates on a single 1.25 V supply and features an integrated auto-adaptive equalizer and reference-less Clock-Data Recovery (CDR) to restore signal integrity. It is housed in a 16-pin, 4x4 mm QFN package with a 0.65 mm pin pitch and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Supports CoaXPress standards and generic 8b/10b applications across multiple speeds
• Enables simultaneous power transmission over coax alongside data channels
• Integrates termination resistors for differential signaling without external components

Applications

• CoaXPress compliant systems supporting all standards and speeds
• Links for high-definition cameras
• High-speed capture cards requiring long cable lengths
• Machine vision, military, aerospace, medical, broadcast, and surveillance cameras
• Intelligent traffic systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product status documentation before procurement. The EQCO125T40C1-I/8EX variant may be subject to discontinuation notices; confirm active availability through authorized Microchip Technology distributors. Ensure that the selected component matches the required package type and temperature grade specified in the design requirements.

Selection Notes

Select this component when designing asymmetric links requiring up to 12.5 Gbps downlink speeds over coaxial cables. It is suitable for camera-side implementations where lower cost is prioritized compared to the full X40 family. Consider the integrated CDR and equalizer capabilities for extending link distances beyond standard trace limitations while maintaining signal integrity.

Part Context

This part belongs to the EQCO125X40 Family, which includes variants like the EQCO125X40-A01 and EQCO125X40-B2. The T40 designation indicates a lower-cost version intended primarily for the device (camera) side, whereas the X40 series supports both device and host (frame grabber) roles. All variants share the same core architecture and package dimensions.

Replacement Considerations

Microchip recommends the EQCO125X40C1T-I/3DW as a replacement for the discontinued EQCO125T40C1-I/8EX. Verify compatibility regarding package dimensions and electrical specifications before substitution.