MAX3461ESD+

Drivers, Receivers, Transceivers Overview

The MAX3461ESD+ is a full-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a +5V supply (4.75V to 5.25V) and supports data rates up to 20Mbps with propagation delays under 20ns. The device features true fail-safe circuitry, ensuring a logic-high receiver output when inputs are open or shorted. It includes hot-swap capability for the driver enable pin and allows up to 128 transceivers on the bus due to its 1/4-unit-load receiver input impedance. The component is housed in a 14-pin SOIC package and functions within an operating temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Full-duplex operation with independent driver and receiver control
• Hot-swap protection prevents bus disturbances during board insertion
• True fail-safe receiver guarantees high output on open or shorted lines
• Low-power shutdown mode reduces supply current to approximately 1µA

Drivers, Receivers, Transceivers Applications

• High-speed RS-485 communications networks
• Profibus applications requiring specific output levels
• Industrial-control local area networks
• Level translation between different voltage domains

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix 'ESD+' indicates the industrial temperature range (-40°C to +85°C) and SOIC-14 package configuration. Confirm that the component matches the specific full-duplex variant with hot-swap capabilities rather than the half-duplex alternatives within the same family. Ensure compatibility with standard +5V power supplies before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring simultaneous transmission and reception on separate differential pairs. The inclusion of phase controls for transmitter and receiver polarity inversion makes it suitable for correcting twisted-pair reversals. Consider the 14-pin footprint requirements compared to the 8-pin half-duplex versions if space is constrained.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX3460–MAX3464 family of high-speed differential bus transceivers designed for RS-485 and RS-422 standards. Unlike the half-duplex variants such as the MAX3464, the MAX3461 provides full-duplex connectivity. It shares common features like thermal shutdown and current limiting with the broader series but distinguishes itself through its specific pinout and hot-swap functionality.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX3460 serves as a similar full-duplex alternative within the same family, differing primarily in the presence of a dedicated shutdown pin versus combined enable control.