An IC is rated I_OH(max)= 600 µA and I_OL(max)= 60 mA. Express the IC's fan- out in terms of standard TTL unit loads (UL).

Question

Quizplus · Accepted Answer

In TTL logic, a standard TTL unit load (UL) for the HIGH state is defined as 40 µA, and for the LOW state, it is 1.6 mA. To calculate the fan-out, divide the given current by the standard unit load current for each state. For the HIGH state: 600 µA / 40 µA = 15 UL. For the LOW state: 60 mA / 1.6 mA = 37.5 UL.

An IC Is Rated IOH(max) = 600 µA and IOL(max)

An IC Is Rated I_OH(max)= 600 µA and I_OL(max)