MAX3097ECEE+T

Overview

The MAX3097ECEE+T is a triple RS-485/RS-422 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 a capacitor-programmable delayed fault output (ALARMD) to prevent erroneous alarms during slow edge rates. ESD protection is rated at ±15kV via the 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 0°C to +70°C.

Feature Summary

• Triple high-speed receivers with integrated fault detection for open-circuit, short-circuit, low differential voltage, and common-mode range violations.
• Capacitor-programmable delayed fault output allows error-free operation at slow data rates by filtering transient faults.
• Robust ESD protection rated at ±15kV using the Human Body Model and IEC 1000-4-2 air-gap discharge method.

Applications

• Motor-shaft encoders
• Telecommunications systems
• Embedded systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm the exact package type and temperature range. Confirm RoHS compliance status directly from the manufacturer's datasheet or certification documents before procurement. Ensure the intended application environment aligns with the specified operating temperature limits.

Selection Notes

Select this component when designing systems requiring triple-channel RS-485 or RS-422 reception with built-in diagnostic capabilities. It is suitable for applications needing extended common-mode input ranges and robust ESD protection without external components. Consider the 16-pin QSOP footprint constraints and the requirement for an external delay capacitor if the ALARMD function is utilized.

Part Context

This part belongs to the MAX3097E/MAX3098E family of high-speed receivers designed for industrial and motor-control applications. The MAX3097E variant provides three receivers with fault detection, while the MAX3098E offers similar functionality with slightly different fault thresholds. Both families share the same pinout and core architecture, differing primarily in electrical characteristics and temperature grades.

Replacement Considerations

The MAX3098E series serves as a functional alternative within the same family, offering identical pinouts and packaging options. Verify that the specific fault detection thresholds of the replacement part meet the system requirements, as the MAX3098E exhibits different differential fault threshold voltages compared to the MAX3097E.

FAQ

How is the delayed fault output time configured?

The delay time for the ALARMD output is set by connecting a capacitor between the DELAY pin and GND. The duration can be calculated using equations provided in the datasheet based on the supply voltage.

What types of faults can the MAX3097E detect?

The device detects open-circuit conditions, short-circuit conditions, low differential voltage signals, and common-mode range violations on its receiver inputs.

Is the ALARMD output active high or active low?

The ALARMD output is active high. A high logic level indicates a fault condition on at least one receiver input pair, while a low level indicates no fault.