## Overview

The MaxLinear SP208ECT-L is a high-performance RS-485/RS-422 transceiver designed for robust, long-distance differential data communication in industrial, automation, and instrumentation applications. The device provides a low-power, high-speed interface for half-duplex or full-duplex communication on balanced differential lines. It integrates electrostatic discharge (ESD) protection, failsafe receivers, and wide common-mode voltage tolerance, making it suitable for noisy and harsh electrical environments.

## Communication Features

* Interface standards: RS-485, RS-422 compliant
* Data rate: Up to 20 Mbps
* Topology: Supports multidrop bus systems with up to 32 nodes per bus
* Half-duplex or full-duplex operation depending on configuration
* Differential input sensitivity: 200 mV minimum
* Driver output differential voltage: 1.5 V minimum into 54 Ω load

The SP208ECT-L provides reliable high-speed data transmission over long twisted-pair cables, with compatibility for industrial and commercial networking systems.

## Electrical Characteristics

* Supply voltage (Vcc): 5 V ±10% typical
* Driver output high voltage (VOH): ≥2.5 V at RL = 54 Ω
* Driver output low voltage (VOL): ≤0.5 V at RL = 54 Ω
* Driver short-circuit current: ±250 mA typical
* Driver differential output swing: ±1.5 V minimum
* Receiver input resistance: 12 kΩ typical
* Receiver input voltage range: -7 V to +12 V common-mode voltage
* Receiver differential threshold: ±200 mV typical

These parameters ensure compatibility with standard RS-485 and RS-422 bus requirements while supporting robust communication over long distances and in electrically noisy environments.

## Protection Features

* ESD protection: ±15 kV on the data lines per IEC 61000-4-2
* Thermal shutdown: Protects the device in case of excessive junction temperature
* Short-circuit protection: Output drivers can withstand indefinite short-circuits without damage
* Failsafe receiver: Receiver outputs a logic high when the input is open, shorted, or terminated

The integrated protection features enhance reliability in industrial and harsh environments where cable faults or transient voltages are common.

## Timing and Performance

* Driver propagation delay: 30 ns typical, 70 ns maximum
* Receiver propagation delay: 30 ns typical, 80 ns maximum
* Driver rise/fall time: 15 ns typical
* Receiver output enable/disable time: 40 ns typical
* Receiver input capacitance: 10 pF typical

High-speed switching and low propagation delays allow for high-throughput communication and minimal timing skew in bus networks.

## Power Consumption

* Driver active supply current: 60 mA typical at Vcc = 5 V
* Receiver supply current: 10 mA typical
* Standby mode: Receiver input shorted to Vcc or GND results in minimal current draw
* Low-power design suitable for embedded and battery-powered applications

The device is optimized for low power operation while maintaining high-speed performance and signal integrity.

## Packaging and Mechanical Data

* Package: 8-pin SOIC (Small Outline Integrated Circuit)
* Lead finish: RoHS-compliant tin-lead or lead-free
* Operating temperature range: -40°C to +85°C ambient
* Storage temperature range: -65°C to +150°C
* Pin spacing and footprint: Compatible with standard 8-pin SOIC PCB designs

The compact package supports integration into space-constrained designs while allowing easy soldering and automated assembly.

## Applications

* Industrial fieldbus networks and automation control
* Data acquisition systems and instrumentation
* Building and process control with long cable runs
* Motor control networks and servo systems
* Embedded systems requiring robust RS-485/RS-422 interfaces

The combination of high-speed, wide common-mode voltage tolerance, and integrated protection makes the SP208ECT-L ideal for reliable differential signaling in industrial environments.

## Summary

The MaxLinear SP208ECT-L is a high-speed, low-power RS-485/RS-422 transceiver featuring robust ESD protection, failsafe receiver operation, and wide common-mode voltage tolerance. It supports data rates up to 20 Mbps and is optimized for long-distance, multi-node bus networks in industrial and embedded applications. Its low propagation delay, compact SOIC package, and integrated fault protection make it a reliable and versatile solution for differential data communication under harsh electrical conditions.