MAX3098EBEEE+

Overview

The MAX3098EBEEE+T is a triple RS-422/RS-485 receiver featuring integrated fault-detection circuitry and dedicated fault-status outputs. It operates on a single +3V to +5.5V supply with a maximum data rate of 32Mbps. The device provides ±15kV ESD protection via Human Body Model and IEC 1000-4-2 standards. It detects open-circuit, short-circuit, low differential voltage, and common-mode range violations. The part includes a capacitor-programmable delay for the ALARMD output to prevent erroneous alarms at slow edge rates. It is housed in a 16-pin QSOP package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Detects open-circuit conditions, short-circuit conditions, low differential voltage signals, and common-mode range violations.
• Provides ±15kV ESD protection using Human Body Model and IEC 1000-4-2 Air-Gap Discharge methods.
• Features independent universal fault outputs (ALARMA, ALARMB, ALARMZ) and a delayed general fault output (ALARMD).
• Includes a capacitor-programmable delay to ensure error-free operation even at slow data rates.

Applications

• Motor-shaft encoders requiring A, B, and Z out-outputs.
• High-speed triple RS-485/RS-422 receivers with extended electrostatic discharge protection.
• Telecommunications systems utilizing RS-485/RS-422 interfaces.
• Embedded systems demanding robust fault detection capabilities.

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact package type and temperature range. Confirm that the component meets RoHS compliance requirements for your target market. Ensure the supplier provides valid traceability documents. Check for any recent product lifecycle changes or obsolescence notices directly from Analog Devices. Validate pin compatibility if replacing existing designs.

Selection Notes

Select this component when high-speed signal integrity monitoring is required for motor control or industrial communication networks. The built-in fault detection eliminates the need for external diagnostic circuitry. Verify that the system's common-mode voltage stays within the specified -10V to +13.2V range. Ensure the application benefits from the programmable delay feature to filter transient noise. Confirm power supply constraints align with the 3V to 5.5V operational window.

Part Context

This device belongs to the MAX3097E/MAX3098E family of high-speed receivers designed for robust industrial environments. It shares functional similarities with industry-standard parts but offers a smaller 16-pin QSOP footprint. The MAX3098 variant specifically provides three receivers with fault detection, distinguishing it from simpler dual-receiver options. It complements Maxim Integrated's portfolio of motion-control feedback solutions.

Replacement Considerations

Direct substitutes include other MAX3098 variants with different packages, such as MAX3098EAESE+ (SOIC) or MAX3098EACEE+ (QSOP, commercial grade). Verify pinout compatibility before substitution. Cross-reference electrical characteristics to ensure fault thresholds match the original design requirements. Check for equivalent ESD protection levels and propagation delays.

FAQ

How is the delayed fault output time determined?

The ALARMD output delay is set by connecting a capacitor between the DELAY pin and GND. The delay time depends on the supply voltage and the capacitance value, following specific equations provided in the datasheet.

What types of faults can the MAX3098 detect?

It detects open-circuit conditions, short-circuit conditions, low differential input voltage signals, and receiver inputs outside the common-mode voltage range.

Does the device require pull-up resistors for fault outputs?

No, the fault outputs are active push-pull and do not require external pull-up resistors.