MAX1482CPD+

Drivers, Receivers, Transceivers Overview

The MAX1482CPD+ is a full-duplex RS-485/RS-422 transceiver in a 14-pin PDIP package. It operates from a single +5V supply (4.75V to 5.25V) with a typical operating current of 20µA and a shutdown current of 0.1µA. The device supports data rates up to 250kbps and features slew-rate-limited drivers to minimize EMI. It includes thermal shutdown and short-circuit current limiting for driver protection, along with a fail-safe receiver that guarantees a logic-high output when inputs are open.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate limited drivers reduce electromagnetic interference and signal reflections on improperly terminated cables.
• Low-power operation with 20µA active current and 0.1µA shutdown mode consumption.
• Integrated thermal shutdown and foldback current limiting protect against driver overload and bus contention.
• Fail-safe receiver design ensures a high logic output state if the differential input lines are left open.

Drivers, Receivers, Transceivers Applications

• Low-power RS-485 and RS-422 communication networks
• Industrial control local area networks requiring reduced EMI
• Large multipoint LANs supporting up to 256 nodes

Drivers, Receivers, Transceivers Procurement Notes

Verify the component matches the specific Analog Devices/Maxim Integrated part number MAX1482CPD+. Confirm the suffix indicates the standard commercial temperature range (0°C to +70°C) and the 14-pin PDIP package configuration. Ensure the datasheet revision aligns with the required specifications before integration into production designs.

Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring full-duplex communication over RS-485 or RS-422 buses. It is suitable for systems prioritizing low power consumption and EMI reduction due to its slew-rate-limited drivers. Verify that the network topology supports up to 256 unit loads, leveraging the 1/8-unit-load input impedance specification.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX1482/MAX1483 family of low-power transceivers. While the MAX1483 provides half-duplex functionality, the MAX1482 variant specifically enables simultaneous transmission and reception. Both share identical electrical characteristics regarding power consumption, protection features, and interface standards.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1482CSD serves as a surface-mount alternative within the same series. For industrial temperature ranges (-40°C to +85°C), the MAX1482EPD is the direct equivalent. Cross-referencing pinouts and electrical limits is necessary when substituting with non-family RS-485 transceivers.

Drivers, Receivers, Transceivers FAQ

How does the MAX1482 achieve low power consumption?

It draws only 20µA during normal operation and enters a low-current shutdown mode consuming 0.1µA when both the driver and receiver are disabled.

What protects the drivers from damage during faults?

The device incorporates foldback current limiting to handle short circuits and thermal shutdown circuitry that forces outputs to a high-impedance state if excessive die temperature occurs.

Why is the 1/8-unit-load input impedance significant?

It allows up to 256 transceivers to be connected on a single bus, significantly exceeding the 32-node limit of standard RS-485 devices with 1-unit-load impedance.