The Intersil HCS154MS is a radiation hardened 4 to 16 line decoder/demultiplexer with two enable inputs. A high on either enable input forces the output to a high state. The Demultiplexing function is performed by using the four input lines to select the desired output states. The HCS154MS utilizes advanced CMOS/SOS technology to achieve high-speed operation. This device is a member of the radiation hardened, high-speed, CMOS/SOS logic family. The HCS154MS is supplied in a 24-lead ceramic flatpack (K suffix) or an SBDIP package (D suffix).


  • 3 micron radiation hardened SOS CMOS
  • Total dose 200k RAD (Si)
  • SEP effective LET no upsets: >100 MEV-cm2/mg
  • Single Event Upset (SEU) immunity < 2 x 10-9 errors/bit-day (Typ)
  • Dose rate survivability: >1 x 1012 Rads (Si)/s
  • Dose rate upset >1010 RAD(Si)/s 20ns pulse
  • Cosmic ray upset immunity <2 x 10-9 errors/gate day (Typ)
  • Latch-up free under any conditions
  • Military temperature range: -55 °C to +125 °C
  • Significant power reduction compared to LSTTL ICs
  • DC operating voltage range: 4.5V to 5.5V
  • Input logic levels
    • VIL = 30% of VCC Max
    • VIH = 70% of VCC Min
  • Input current levels Ii ≤ 5µA at VOL, VOH




Design & Development