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At least from an EE perspective its interesting to contemplate "here's the highest performance discrete RTL technology that could be designed in 1960 using 1960
by VLM 9y ago
At least from an EE perspective its interesting to contemplate "here's the highest performance discrete RTL technology that could be designed in 1960 using 1960 transistors... You have free reign to design a RTL NAND gate using any 2017 production transistor you want. In the spirit of IBM mainframes, no power limit. Can your NAND gate break 150 MHz? Can your NAND gate break 15 GHz?"
"You can buy FETs that have 1970s performance specs in 2017, very cheaply in fact, but in 2017 you can also buy FETs that output many watts of power at 10 GHz x-band microwave freqs. Here's a DEC flip-chip module containing two flipflops that topped out around 30 or so MHz in 1965, your assignment is to use modern transistors in the lab to make a modern work-alike operate over 10 GHz"
- pjc50 9y agoAt that speed the simple fact of using discrete components kills it, surely? Multiple picofarads of parasitic capacitance on the leads, plus gate capacitance itself? > buy FETs that output many watts of power at 10 GHz x-band microwave freqs. Part number? Gate drive for that must be 'interesting'.