Datasheet NC7S14 (ON Semiconductor) - 4

link to page 4 link to page 4 link to page 4 link to page 4 link to page 4 link to page 4
NC7S14 AC ELECTRICAL CHARACTERISTICS TA = +25
°
C TA = −40 to +85
°
C Symbol Parameter VCC (V) Conditions Min Typ Max Min Max Unit
tPLH Propagation Delay (Figure 4, 6) 5.0 CL = 15 pF − 4.5 21 − − ns tPHL 2.0 CL = 50 pF − 20 100 − 125 ns 3.0 − 12 27 − 35 4.5 − 8.5 20 − 25 6.0 − 7.5 17 − 21 tTLH Output Transition Time 5.0 CL = 15 pF − 3 8 − − ns tTHL (Figure 4, 6) 2.0 CL = 50 pF − 25 125 − 145 ns 3.0 − 16 35 − 45 4.5 − 11 25 − 30 6.0 − 9 21 − 24 CIN Input Capacitance Open − 2 10 − 10 pF CPD Power Dissipation Capacitance 5.0 (Note 2) − 7 − − − pF (Figure 5) 2. CPD is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption (ICCD) at no output loading and operating at 50% duty cycle. CPD is related to ICCD dynamic operating current by the expression: ICCD = (CPD) (VCC) (fIN) + (ICCstatic).
AC Loading and Waveforms
VCC INPUT OUTPUT CL CL includes load and stray capacitance Input PRR = 1.0 MHz; tW = 500 ns
Figure 4. AC Test Circuit Figure 6. AC Waveforms
VCC A INPUT Input = AC Waveforms; PRR = Variable; Duty Cycle = 50%.
Figure 5. ICCD Test Circuit www.onsemi.com 4