MAX9121EUE+T

Drivers, Receivers, Transceivers Overview

The MAX9121EUE+T is a quad low-voltage differential signaling (LVDS) line receiver manufactured by Analog Devices Inc./Maxim Integrated. It accepts four LVDS differential inputs and translates them to LVCMOS outputs, supporting data rates up to 500Mbps over controlled-impedance media of approximately 100Ω. The device operates from a single +3.3V supply with a voltage range of 3.0V to 3.6V. Key electrical parameters include a maximum propagation delay of 2.7ns, a typical supply current of 15mA when enabled, and an operating temperature range of -40°C to +85°C. It is housed in a 16-pin TSSOP package.

Drivers, Receivers, Transceivers Feature Summary

• Flow-through pinout separates LVDS inputs from LVCMOS outputs to simplify PCB layout and reduce crosstalk.
• Fail-safe circuit forces the output high when inputs are open, undriven and shorted, or undriven and terminated.
• Wide common-mode input range supports ground potential differences and common-mode noise between driver and receiver.

Drivers, Receivers, Transceivers Applications

• Cellular Phone Base Stations
• Add/Drop Muxes
• Network Switches/Routers

Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'T' indicates tape-and-reel packaging, distinct from the tube-packaged MAX9121EUE+. Confirm the component is the receiver variant (MAX9121), not the integrated termination version (MAX9122). Ensure the datasheet revision matches the required specifications for your design implementation.

Drivers, Receivers, Transceivers Selection Notes

Select this component when point-to-point LVDS reception at 500Mbps is required without integrated termination. Unlike the MAX9122, the MAX9121 requires external termination resistors for point-to-point connections. Verify that the flow-through pinout aligns with the existing PCB footprint and signal routing strategy.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX9121/MAX9122 family of quad LVDS receivers. The MAX9121 differs from the MAX9122 by lacking integrated parallel termination resistors, requiring external components for impedance matching. Both share identical pinouts and functional characteristics except for the input termination structure.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet notes pin compatibility with the DS90LV048A. Designers should verify electrical parameter alignment before substitution. No other specific substitute part numbers are documented in the provided source material.