MAX3098EAESE+T

Overview

The MAX3098EAESE+T is a triple RS-422/RS-485 receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3V to +5.5V supply and supports data rates up to 32Mbps. The device features fault-detection circuitry with independent alarm outputs for each receiver channel, identifying open-circuit, short-circuit, low differential voltage, and common-mode range violations. It includes ±15kV ESD protection via Human Body Model and IEC 1000-4-2 standards. The component is housed in a 16-pin QSOP package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Triple high-speed receivers with integrated fault detection for open-circuit, short-circuit, low differential voltage, and common-mode range violations
• Robust electrostatic discharge (ESD) protection rated at ±15kV using Human Body Model and IEC 1000-4-2 standards
• Capacitor-programmable delay on the ALARMD output to prevent erroneous fault indications during slow edge rates
• Extended common-mode input range spanning from -10V to +13.2V

Applications

• Motor-shaft encoder interfaces requiring A, B, and Z signal reception
• High-speed telecommunications systems utilizing RS-485 or RS-422 protocols
• Embedded systems demanding reliable communication with fault status monitoring

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm the exact package type and temperature grade. Confirm RoHS compliance status through current datasheets or environmental certificates provided by Analog Devices. Ensure the procurement source provides valid traceability for industrial-grade components.

Selection Notes

Select this component when designing systems that require simultaneous monitoring of three differential receiver channels with explicit fault reporting capabilities. It is suitable for applications needing extended common-mode voltage tolerance and high-speed data transmission up to 32Mbps. Consider the 16-pin QSOP footprint constraints and the requirement for external capacitors if programmable delay functionality is necessary.

Part Context

This part belongs to the MAX3097E/MAX3098E family of triple RS-422/RS-485 receivers. The MAX3098 variant specifically offers tighter differential fault thresholds compared to the MAX3097. Both devices share identical pinouts and core functionalities but differ in the sensitivity settings for detecting low differential input voltages.

Replacement Considerations

The MAX3097EAESE+T serves as a functional substitute within the same family, differing primarily in fault-detection threshold specifications. Verify compatibility regarding differential voltage limits before implementation.

FAQ

How is the delayed fault output time configured?

The ALARMD output delay is set by connecting a capacitor between the DELAY pin and ground. The delay duration depends on the capacitance value and the supply voltage.

What types of faults can the MAX3098E detect?

The device detects open-circuit conditions, short-circuit conditions, low differential input voltage signals, and violations of the common-mode input voltage range.

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

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