MAX3098EACSE

Overview

The MAX3098EACSE is a triple RS-422/RS-485 receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of +3V to +5.5V and supports data rates up to 32Mbps. The device features fault-detection circuitry with independent alarm outputs for each channel and a delayed general fault output. It provides ±15kV ESD protection via Human Body Model, IEC 1000-4-2 Air-Gap Discharge, and ±8kV Contact Discharge. The extended common-mode input range spans from -10V to +13.2V. The component is housed in a 16-pin Small Outline (SO) package and functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Triple differential receivers designed for high-speed data transmission up to 32Mbps
• Integrated fault detection identifies open-circuit, short-circuit, low differential voltage, and common-mode range violations
• Capacitor-programmable delay on the ALARMD output prevents erroneous alarms during slow signal edge rates
• Robust electrostatic discharge protection rated at ±15kV HBM and ±15kV IEC Air-Gap

Applications

• Motor-shaft encoder interfaces requiring A, B, and Z signal reception
• High-speed industrial communication systems utilizing RS-485 or RS-422 protocols
• Telecommunications equipment demanding reliable signal integrity
• Embedded control systems operating in electrically noisy environments

Procurement Notes

Verify the specific suffix ACSE confirms the 16-pin SO package and the 0°C to +70°C commercial temperature grade. Ensure the ordering part number matches the exact functional requirements for the motor encoder application. Confirm compliance with RoHS directives as specified in the manufacturer documentation before finalizing procurement orders.

Selection Notes

Select this component when three independent receiver channels are required for absolute positioning feedback. The MAX3098EACSE is suitable for applications needing fault status monitoring without external logic. Compare against the MAX3097E if different fault threshold sensitivities are preferred. Verify that the 16-pin SO footprint fits the target PCB layout constraints.

Part Context

This device belongs to the MAX3097E/MAX3098E family of rugged interface receivers. It serves as a specialized solution for motion-control feedback loops where signal degradation must be detected immediately. The MAX3098 variant offers specific fault thresholds optimized for certain encoder types compared to the MAX3097.

Replacement Considerations

The MAX3097EACSE is a pin-compatible alternative within the same series but utilizes different fault detection thresholds. Other standard RS-485 receivers lack the integrated fault alarm outputs and may require additional components to achieve similar diagnostic capabilities.

FAQ

How is the delayed fault output time configured?

The delay time for the ALARMD output is set by connecting an external capacitor between the DELAY pin and GND. The duration depends on the capacitance value and the supply voltage.

What conditions trigger the individual fault alarms?

Individual alarms trigger upon detecting open circuits, short circuits, differential voltages below the preset threshold, or common-mode voltages outside the -10V to +13.2V range.

Does the device include transmitter drivers?

No, the MAX3098EACSE contains only receivers. It does not include driver circuitry for transmitting signals onto the bus.