Total dose response of Maxim analog multiplexers at two dose rates

Samples of MAX338CPE and MAX358CPE 8 channel CMOS analog multiplexers were irradiated at 100 and 0.01 rads/s to a total dose of /spl sim/16 krads. Both part types showed a significant increase in leakage current at a total dose as low as 1-2 krads. The only low dose rate sensitivity was for on-resistance in the MAX358, which appears to be a time dependent effect and not a true dose rate effect.