MAX1483ESA+T

Drivers, Receivers, Transceivers Overview

The MAX1483ESA+T is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply (4.75V to 5.25V) and supports data rates up to 250kbps. The device features a low operating current of 20µA and a shutdown mode consuming 0.1µA. It utilizes an 8-pin SOIC package with a -40°C to +85°C operating temperature range. Key electrical characteristics include a receiver input resistance of 96kΩ, driver short-circuit current limits, and thermal shutdown protection.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate-limited drivers minimize electromagnetic interference and reduce signal reflections on improperly terminated cables.
• 1/8-unit-load receiver input impedance allows for the connection of up to 256 transceivers on a single bus.
• Integrated foldback current limiting and thermal shutdown circuitry protect against driver overload and excessive power dissipation.
• Fail-safe receiver design guarantees a logic-high output state when the differential inputs are left open.

Drivers, Receivers, Transceivers Applications

• Low-power RS-485 and RS-422 communication networks
• EMI-sensitive industrial control applications
• Industrial-control local area networks
• Large-scale multipoint LANs requiring high node density

Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix '+T' corresponds to tape-and-reel packaging as specified in official documentation. Confirm the 'E' designation indicates the extended temperature range (-40°C to +85°C). Ensure the component matches the specific manufacturer's datasheet revision to validate pinout and electrical parameters before integration.

Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring low quiescent current and high bus capacity. The half-duplex configuration suits bidirectional serial communication where simultaneous transmission and reception are not required. Verify compatibility with the system's 5V logic levels and ensure proper termination resistors are used to leverage the slew-rate limitation benefits.

Drivers, Receivers, Transceivers Part Context

This part belongs to the MAX1482/MAX1483 family of low-power transceivers. The MAX1483 variant specifically provides half-duplex operation, distinguishing it from the full-duplex MAX1482. Both share identical electrical specifications regarding power consumption, unit load, and protection features, differing only in duplex capability.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1483CPA and MAX1483CSA are functional equivalents within the same family but operate over a commercial temperature range (0°C to +70°C). Substitution requires verifying that the application environment remains within the commercial range limits.

Drivers, Receivers, Transceivers FAQ

How does the MAX1483 achieve reduced EMI?

It employs slew-rate-limited drivers which slow down the signal transition edges, thereby minimizing high-frequency harmonics and reducing electromagnetic interference.

What is the maximum number of devices supported on the bus?

Due to the 1/8-unit-load receiver input impedance, the MAX1483 supports up to 256 transceivers on a single bus network.

How is the low-power shutdown mode activated?

Shutdown is initiated by driving the Receiver Enable (RE) pin high and the Driver Enable (DE) pin low simultaneously for at least 600ns.