MAX9122EUE+

Drivers, Receivers, Transceivers Overview

The MAX9122EUE+ 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 features integrated parallel termination resistors nominally valued at 107Ω, eliminating the need for discrete components. It operates from a single +3.3V supply with an operating temperature range of -40°C to +85°C. Key electrical parameters include a maximum propagation delay of 2.7ns, a maximum pulse skew of 300ps, and a typical supply current of 15mA.

Drivers, Receivers, Transceivers Feature Summary

• Integrated termination resistors eliminate the requirement for external discrete components
• Flow-through pinout simplifies PCB layout and reduces crosstalk between inputs and outputs
• Fail-safe circuit ensures high output state when inputs are open or undriven

Drivers, Receivers, Transceivers Applications

• Digital Copiers
• Laser Printers
• Cellular Phone Base Stations
• Add/Drop Muxes
• Network Switches/Routers

Drivers, Receivers, Transceivers Procurement Notes

Verify that the component matches the specific MAX9122 variant with integrated termination, distinct from the MAX9121 which requires external resistors. Confirm the package type is TSSOP-16 and the suffix indicates lead-free compliance. Ensure the supplier provides valid traceability documentation for the Analog Devices/Maxim Integrated brand.

Drivers, Receivers, Transceivers Selection Notes

Select this component when integrated termination is required to save board space and reduce stub lengths in high-speed LVDS applications. It is suitable for designs needing guaranteed 500Mbps performance with low power consumption. Consider the flow-through pinout for simplified routing compared to standard layouts.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX9121/MAX9122 family of quad LVDS receivers. The MAX9122 specifically distinguishes itself by including internal 107Ω termination resistors, whereas the MAX9121 has high-impedance inputs requiring external termination. Both share identical pinouts and electrical characteristics except for the input termination structure.

Drivers, Receivers, Transceivers Replacement Considerations

The datasheet notes pin compatibility with the DS90LV048A. Verify functional equivalence regarding termination requirements and signal integrity specifications before substitution.

Drivers, Receivers, Transceivers FAQ

What is the difference between the MAX9121 and MAX9122?

The MAX9122 includes integrated parallel termination resistors (nominally 107Ω), while the MAX9121 has high-impedance inputs that require external termination resistors.

How does the fail-safe feature work?

The fail-safe circuit sets the output high when the inputs are open, or when they are undriven and shorted or parallel terminated, preventing false data reception due to noise.

What is the maximum data rate supported?

The device is guaranteed to receive data at speeds up to 500Mbps (250MHz).