Description
The Intersil ATCS374MS is a radiation hardened octal D-type flip-flop with three-state outputs. The eight edge-triggered flipflops enter data into their registers on the low to high transition of clock (CP). The Output Enable (OEN) controls the three-state outputs and is independent of the register operation. When OEN is high, the outputs will be in the high impedance state.

Features
• 1.25 Micron Radiation Hardened SOS CMOS
• Total Dose 300K RAD (Si)
• Single Event Upset (SEU) Immunity <1 x 10-10 Errors/Bit-Day (Typ)
• SEU LET Threshold >80 MEV-cm2/mg
• Dose Rate Upset >1011 RAD (Si)/s, 20ns Pulse
• Latch-Up Free Under Any Conditions
• Military Temperature Range: -55°C to +125°C
• Significant Power Reduction Compared to ALSTTL Logic
• DC Operating Voltage Range: 4.5V to 5.5V
• Input Logic Levels
    - VIL = 0.8V Max
    - VIH = VCC/2V Min
• Input Current ≤1µA at VOL, VOH