MAX3280EAUK+TG11

Overview

The MAX3280EAUK+TG11 is a single RS-485/RS-422 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 52Mbps. The device features true fail-safe circuitry, guaranteeing a logic-high output when inputs are open or shorted. It provides ±15kV Human Body Model ESD protection on the A and B input pins. Packaged in a compact 5-pin SOT23 form factor, it is designed for multidrop clock distribution and high-speed communication networks.

Feature Summary

• True fail-safe architecture ensures a stable logic-high receiver output when differential inputs are left open or shorted together.
• Integrated electrostatic discharge protection rated at ±15kV (Human Body Model) and ±6kV IEC 1000-4-2 contact discharge on receiver inputs.
• Low package-to-package skew time of 8ns maximum, facilitating precise synchronization in multidrop clock distribution applications.
• High input impedance equivalent to 1/4-unit-load, allowing connection of up to 128 receivers on a single bus.

Applications

• Multidrop clock distribution systems
• Telecom rack equipment interfaces
• Industrial control network nodes
• Base station communication modules

Procurement Notes

Verify the specific suffix 'G11' against official manufacturer documentation to confirm exact RoHS compliance status and tape-and-reel specifications. Ensure the ordering code matches the required automotive qualification if applicable, as standard variants differ from the '/V' qualified parts. Confirm lead-free status through the datasheet revision history.

Selection Notes

Select this component for designs requiring a minimal footprint with a 5-pin SOT23 package. It is suitable for systems needing high noise immunity via true fail-safe outputs without an enable pin. Consider the MAX3281E or MAX3283E if active high or low enable functionality is required, or the MAX3284E for compatibility with low-voltage FPGA logic levels.

Part Context

This part belongs to the MAX3280E family of single receivers optimized for RS-485 and RS-422 standards. The family includes variants with enable pins (MAX3281E/MAX3283E) and low-voltage logic support (MAX3284E). All share common electrical characteristics regarding speed, ESD protection, and fail-safe behavior, differing primarily in pin configuration and control features.

Replacement Considerations

Direct functional substitutes within the same package include the MAX3280EAUK+T. For designs requiring an enable pin, the MAX3281EAUT+T or MAX3283EAUT+T may be considered, though pinouts differ. Verify thermal resistance and operating temperature ranges (-40°C to +125°C) match system requirements.