Radiation Mitigation Solutions Majority Voter

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Advanced high performance semiconductor devices can be sensitive to Single Event Effect (SEE) when exposed under radiation in the Space environment. Those events can lead at least to data corruption or in worst case to the self destruction of the device. Therefore, those SEE events shall be mitigated to ensure the relevant reliability and life time of the application. A safe design for a mission critical Space application shall include a mitigation device.

The 3DRC3508ES2861 is a 3-input, high-speed octal majority voter module with built-in triple redundancy. With the three 8-bit inputs used for majority voting, the module provides the result of the vote as an output, along with an error signal indicating if there is a difference between any of the input bits (also 8-bit).

Operating on a power supply range from 1.65 V to 5.5 V, the module can be used in any type of redundancy configuration, thanks to the cold sparing function.

The 3DRC3508ES2861 is immune to SET and SEL by design, and insensitive to SEU/MBU by process (CMOS IC), qualifying its use in the space environment. Its integration into digital systems improves reliability through the use of the TMR. This space-qualified module is ITAR-free.

Key features

  • Voltage supply range: 1.65 V to 5.50 V

    Input voltage up to 5.5 V at any Vcc

    Provides logic-level down translation to Vcc

  • Cold sparing capability

    Internal power-on reset (POR) circuitry

    Power savings & low dissipated power

  • Up to 100 Mbps data rate

    13 ns maximum propagation delay at 3.3 V

  • Temperature Range -55°C / +125°C

  • Radiation tolerance:

    TID > 30 krad(Si)

    SEL LETth > 74.7 MeV.cm²/mg at +125°C

    SET LETth > 74.7 MeV.cm²/mg at +125°C

  • Space quality grade

    Technology proven for 15 to 18 years missions in Space

    Worldwide delivery guarantee

Line Up

Line Up

Each 3D PLUS standard product and SiP solution are defined by a specific part number based on the part number decoder provided below. The ordering information consist as a minimum of the following 3 items for fully define a product:

  • The product’s Part Number
  • The temperature range
  • The quality grade

For High Reliability products or SiPs for Aerospace applications, a Source Control Drawing (SCD#) referenced 3DPA-xxxx is available for each product. It shall be used for its procurement in addition to other ordering information.

Interfaces Part Number Decoder

Product Part Number Description Package Temperature
Majority Voter 3DRC3508ES2861  1.65 V to 5.5 V supply range

four dual 3-input voter gates, with individual error outputs.
Up 100 Mbps data rate

SOP54 C, I, M


Design Tools

Design Tools

Majority Voter

3DRC3508ES2861 - Assembly Recommendations PDF - 791 ko Download
3DRC3508ES2861 - Footprint PDF - 676 ko Download


Other technical documentation is available under request: Applications Notes, IBIS, RTL, Step and Mechanical file, Radiation Report.

Product Part Number Data Sheet
Majority Voter 3DRC3508ES2861 Data Sheet PDF - 368ko Download