MAX1482ESD+T

Drivers, Receivers, Transceivers Overview

The MAX1482ESD+T is a low-power, full-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 draws only 20µA of no-load supply current and features a shutdown mode consuming 0.1µA. It utilizes a 1/8-unit-load receiver input impedance, allowing up to 256 transceivers on the bus. The component includes slew-rate-limited drivers for EMI reduction, thermal shutdown protection, and fail-safe receiver inputs. It is housed in a 14-pin SOIC package with an operating temperature range of -40°C to +85°C.

Drivers, Receivers, Transceivers Feature Summary

• Slew-rate-limited drivers minimize electromagnetic interference and reduce signal reflections caused by improperly terminated cables.
• Low-current shutdown mode reduces power consumption to 0.1µA when both driver and receiver are disabled.
• Fail-safe receiver input guarantees a logic-high output state if the differential input lines are left open-circuit.

Drivers, Receivers, Transceivers Applications

• Low-Power RS-485/RS-422 Networks
• Transceivers for EMI-Sensitive Applications
• Industrial-Control Local Area Networks
• Large 256-Node LANs

Drivers, Receivers, Transceivers Procurement Notes

Verify the ordering suffix matches the required specifications. The 'E' suffix indicates an extended temperature range of -40°C to +85°C, while the 'SD' suffix denotes the 14-pin SOIC package type. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors before procurement.

Drivers, Receivers, Transceivers Selection Notes

Select the MAX1482ESD+T for applications requiring full-duplex communication capabilities. Ensure the system design accommodates the specified 4.75V to 5.25V supply voltage range. Verify that the 250kbps maximum data rate meets the network requirements and that the 1/8-unit-load input impedance allows for the desired number of nodes on the bus.

Drivers, Receivers, Transceivers Part Context

This component belongs to the MAX1482/MAX1483 family of low-power transceivers designed for RS-485 and RS-422 communication standards. The MAX1482 variant specifically provides full-duplex operation, distinguishing it from the half-duplex MAX1483. Both share identical low-power characteristics and slew-rate limiting features.

Drivers, Receivers, Transceivers Replacement Considerations

The MAX1483ESD+T serves as a functional substitute for half-duplex applications within the same family. Other compatible options include the MAX1482CSD+T for commercial temperature ranges and the MAX1482CPD+T for through-hole DIP packaging alternatives.

Drivers, Receivers, Transceivers FAQ

How does the MAX1482ESD+T achieve reduced electromagnetic interference?

The device incorporates slew-rate-limited drivers that slow down the signal transition times. This minimizes high-frequency harmonics and significantly reduces electromagnetic interference compared to standard RS-485 transceivers.

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

Due to its 1/8-unit-load receiver input impedance, the MAX1482ESD+T allows up to 256 transceivers to be connected on the same bus, exceeding the standard limit of 32 units.

Under what conditions does the device enter the low-power shutdown mode?

The device enters shutdown mode when the Receiver Enable (RE) pin is driven high and the Driver Enable (DE) pin is driven low simultaneously. In this state, the typical supply current drops to 0.1µA.