Description
The Intersil HCS139MS is a Radiation Hardened 2-to-4 line Decoder/Demultiplexer with an active low enable (E). Data on the select inputs (A0, A1) cause one of the four normally high outputs to go to a low logic level. The Demultiplexing function is performed by using the enable input as the data input.

Features
• 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 RAD (Si)/s
• Dose Rate Upset >1010 RAD (Si)/s, 20ns Pulse
• 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