Determine tHI and tLO for the circuit given below.

• tHI = 7.95 µs, tLO = 6.24 µs
• tHI = 6.24 µs, tLO = 7.95 µs
• tHI = 3.97 µs, tLO = 3.21 µs
• tHI = 3.21 µs, tLO = 3.97 µs