Radiation-hardened multiplexers for manned spacecraft and satellites introduced by Intersil

MILPITAS, Calif., 28 Sept. 2015. Intersil Corp. in Milpitas, Calif., is introducing the ISL71840SEH and ISL71841SEH radiation-hardened multiplexers for manned spacecraft and satellites.

By Intelligent Aerospace staff
By Intelligent Aerospace staff

MILPITAS, Calif., 28 Sept. 2015. Intersil Corp. in Milpitas, Calif., is introducing the ISL71840SEH and ISL71841SEH radiation-hardened multiplexers for manned spacecraft and satellites.

The multiplexer power electronics devices offer solid electrostatic discharge (ESD) protection and signal chain accuracy and timing performance. The ISL71840SEH 30-volt 16-channel multiplexer is a drop-in replacement for Intersil's HS9-1840ARH, which has been aboard satellite and space exploration missions like the NASA Orion spacecraft flight test.

For applications with form factor constraints, the ISL71841SEH 30-volt 32-channel multiplexer offers high-performance and 41 percent reduced board space compared with an ISL71840SEH two-chip solution.

The ISL71840SEH and ISL71841SEH rad-hard multiplexers capitalize on Intersil's proprietary silicon-on-insulator process, which provides single event latch-up (SEL) robustness in heavy ion environments. The enhanced 8-kilovolt ESD protection eliminates the need for external protection diodes on the input pins.

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The ISL71840SEH and ISL71841SEH offer over-voltage protection on a per-switch basis to maintain the continuous processing of telemetry test points. If any input channel experiences an over-voltage condition, the remaining channels continue sending data to the A/D converter.

Both multiplexers provide a cold spare redundant capability, allowing the connection of two or three additional unpowered multiplexers to a common databus.

For more information contact Intersil online at www.intersil.com.

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