RS232/RS562 Transceivers

The RS232 standard (formally TIA-232) specifies data transmission over a simple unterminated, multiconductor cable at rates up to 20kbps. The standard specifies the electrical characteristics and connector for an all-encompassing point-to-point modem interface. Although the original specification was intended for modems, subsequent versions of the standard shed unneeded signals to expand its scope and use as a general purpose serial interface at data rates up to 1Mbps. The RS562 standard is a similar low voltage version of the RS232 standard, with the primary difference being RS232 specifies a minimum driver output voltage of ±5V and RS562 specifies a minimum driver output voltage of ±3.7V, easing power supply requirements.

Linear Technology offers single, dual, and combination transceivers of up to five RS232/RS562 drivers and receivers for 1.8V to 5.5V power supplies. Data terminal equipment (DTE) or data communications equipment (DCE) configurations are also available in 3.3V or 5V versions. Galvanically isolated modules, like the LTM2882, break ground loops and provide a convenient self-powered, isolated, low EMI solution that drastically reduces component count and design complexity.

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