DESCRIPTION:
Maxwell Technologies 54HC4049 high speed CMOS Logic Hex Inverting Buffers features a greater than 100 krad(Si) total dose tolerance, depending upon space misssion. These parts have a modified input protection structure that enables them to be used as logic level translators which will convert high-level logic to a low-level logic while operating off the low-level logic supply. For example, 15V input pulse levels can be down-converted to 0V to 5V logic levels. The modified input protection structure protects the input from negative electrostatic discharge. The 54HC4049 can be used as simple buffers or inverters without level translation.

FEATURES:
• High speed CMOS logic hex inverting Buffers
• RAD-PAK® radiation hardened against natural space radiation
• Single Event Effects:
   - SEL: > 120 MeV/mg/cm2
• Total dose hardness:
• - > 100 Krad (Si), depending upon space mission
• Package:
   -16 Pin RAD-PAK® Flat Pack
• Typical propagation delay:
   - 6ns at VCC = 5V, CL = 15pF, TA = 25°C
• High-to-Low voltage level converter for up to VI = 16V
• Fanout (over temperature range)
   -10 LSTTL loads (Standard Outputs)
   -15 LSTTL loads (Bus Driver Outputs)
• Balanced propagation delay and transition times
• Significant power reduction compared to LSTTL logic ICs
• 2V to 6V operation
• High noise immunity
• -NIL = 30%, NIH = 30% of VCC at VCC = 5V