Description
The Intersil HCTS393MS is a Radiation Hardened 4-stage riple-carry binary counter. All counter stages are master-slave flip-flop. The state of the stage advances one count on the negative transition of each clock pulse. A high voltage level on the MR line resets all counters to their zero state. All inputs and outputs are buffered.

Features
• 3 Micron Radiation Hardened CMOS SOS
• 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
• Fanout (Over Temperature Range)
    - Standard Outputs: 10 LSTTL Loads
• Military Temperature Range: -55°C to +125°C
• Significant Power Reduction Compared to LSTTL ICs
• DC Operating Voltage Range: 4.5V to 5.5V
• LSTTL Input Compatibility
    - VIL = 0.8V Max
    - VIH = VCC/2 Min
• Input Current Levels Ii ≤ 5µA at VOL, VOH