MAX3093EEUE+

Overview

The MAX3093EEUE+ is a low-power, quad RS-422/RS-485 receiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply and supports data rates up to 10Mbps. The device features ±15kV ESD protection via IEC 1000-4-2 Air-Gap Discharge, ±8kV Contact Discharge, and ±15kV Human Body Model standards. Propagation delays are guaranteed within ±8ns tolerance for precise device-to-device matching. It includes a 1nA shutdown mode and fail-safe logic-high outputs for open circuits. The component is housed in a 16-pin TSSOP package and functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Provides robust electrostatic discharge protection on all receiver inputs to withstand harsh environmental conditions without latchup.
• Features guaranteed propagation-delay matching between devices to minimize skewing when receiving multiple data lines or clock signals simultaneously.
• Incorporates a quarter-unit-load input impedance that allows connection of up to 128 receivers on a single bus network.
• Includes a fail-safe feature that guarantees a logic-high output state if the differential input terminals remain in an open-circuit condition.

Applications

• Telecommunications equipment requiring reliable serial communication interfaces
• Rugged RS-422, RS-485, or RS-423 bus receiver implementations
• Systems with high sensitivity to electrostatic discharge events
• Level translation applications involving RS-422/RS-485 signal paths

Procurement Notes

Verify the specific ordering suffix 'EEUE+' corresponds to the required industrial temperature range (-40°C to +85°C) and the 16-pin TSSOP surface-mount package configuration. Confirm that the datasheet specifications align with the system's voltage requirements, as this variant is designed specifically for +5V operation rather than the +3.3V variant.

Selection Notes

Select this component when designing systems that require quad receivers with tight propagation delay tolerances for multi-drop networks. Ensure the design accommodates the +5V supply voltage requirement, as this part is not compatible with +3.3V logic levels found in the MAX3094E series. Consider the 1nA shutdown current for power-sensitive applications where bus idle states must minimize energy consumption.

Part Context

This component serves as a direct pin-compatible upgrade to the industry-standard '34C86 quad receiver. It replaces legacy discrete solutions or older interface chips by integrating enhanced ESD protection and lower power consumption into a compact surface-mount footprint. It belongs to the MAX3093E/MAX3094E family, distinguished by its specific supply voltage and delay matching characteristics.

Replacement Considerations

The MAX3093ECUE+ is available as a commercial grade alternative offering identical functionality but restricted to a 0°C to +70°C operating temperature range. Designers requiring extended thermal performance must ensure the EE suffix is maintained to guarantee reliability under industrial conditions.

FAQ

How does the MAX3093EEUE+ handle open circuit inputs?

The device incorporates a fail-safe feature that guarantees a logic-high output if the differential input terminals are left in an open-circuit state, preventing undefined logic levels during transmitter disconnection.

What is the maximum number of receivers supported on a single bus?

Due to its quarter-unit-load input impedance, the MAX3093EEUE+ allows up to 128 receivers to be connected to a standard RS-485 bus.

Does the device support low-power standby modes?

Yes, the MAX3093EEUE+ features a low-power shutdown mode where both enable inputs are driven low, resulting in high-impedance outputs and a typical supply current of less than 1nA.