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One advantage TTL has over CMOS is that TTL is ________.

  • A.less expensive
  • B.not sensitive to electrostatic discharge
  • C.faster
  • D.more widely available

Answer: B

Correct answer: not sensitive to electrostatic discharge

CMOS inputs are insulated gates that a static discharge can puncture, so the devices need careful handling; TTL inputs are transistor junctions and are far more robust. On the other three counts CMOS now matches or beats TTL.

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