MAX14954ETO+T

Signal Buffers, Repeaters, Splitters Overview

The MAX14954ETO+T is a ruggedized quad PCIe redriver with equalization, designed for extended temperature operation. It supports PCIe Gen III (8.0GT/s), Gen II (5.0GT/s), and Gen I (2.5GT/s) data rates. The device features four channels with programmable input equalization up to 16dB and output deemphasis up to 9dB. Operating from a single +3.0V to +3.6V supply, it draws typical current of 260mA in active mode and 150mA in standby. Electrical characteristics include a propagation delay of 160ps typ, deterministic jitter of 10.5psP-P typ, and random jitter of 0.5psRMS typ at 8GT/s. It operates within a -40°C to +85°C temperature range.

Signal Buffers, Repeaters, Splitters Feature Summary

• Provides programmable input equalization and output deemphasis to compensate for circuit-board loss and restore signal integrity.
• Features electrical idle detection and receiver detection on each channel to manage power states and prevent noise redriving.
• Housed in a flow-through 42-pin TQFN package optimized for resistance to vibration and shocks in harsh environments.

Signal Buffers, Repeaters, Splitters Applications

• Industrial and Embedded PCs
• Computer on Modules
• Carrier Boards
• Test Equipment
• Medical Equipment

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific suffix 'T' against official documentation to confirm tape-and-reel packaging status, as datasheets may primarily list tube packaging for the base model. Ensure compatibility with lead-free/RoHS requirements indicated by the '+' designation. Confirm availability through authorized distributors given potential lifecycle changes.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this component when designing systems requiring robust signal restoration for PCIe links over long traces or lossy media. Consider its industrial temperature rating and mechanical ruggedness for applications subject to vibration. Evaluate the need for per-channel equalization control and receiver detection capabilities versus simpler redriver solutions.

Signal Buffers, Repeaters, Splitters Part Context

This part belongs to the MAX14954 family of ruggedized PCIe redrivers. It shares functional similarities with other Maxim Integrated signal conditioning ICs but is distinctively rated for extended temperatures and mechanical stress. It complements standard commercial-grade redrivers by offering enhanced durability for industrial deployments.

Signal Buffers, Repeaters, Splitters Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices/Maxim Integrated technical support for direct replacements or pin-compatible alternatives if discontinuation occurs.

Signal Buffers, Repeaters, Splitters FAQ

How does the MAX14954 handle electrical idle signals?

The device detects electrical idle when the differential input falls below the threshold limit and squelches the output to prevent unwanted noise redriving. It resumes normal operation when the input signal exceeds the high limit.

What is the purpose of the RXDET pin?

The RXDET pin initiates receiver detection on a rising or falling edge when the EN pin is high. This feature allows the device to remain in low-power standby until a valid receiver is detected on at least one channel.

Can the MAX14954 operate with PCIe Gen I signals?

Yes, while optimized for Gen III (8.0GT/s) and Gen II (5.0GT/s), the device is fully compatible with and can handle Gen I (2.5GT/s) data rates.