Datasheet

3 www.fairchildsemi.com
NC7WZ86
AC Electrical Characteristics
Note 3: C
PD
is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption (I
CCD
) at no output
loading and operating at 50% duty cycle. (See Figure 2.) C
PD
is related to I
CCD
dynamic operating current by the expression:
I
CCD
= (C
PD
)(V
CC
)(f
IN
) + (I
CC
static).
AC Loading and Waveforms
C
L
includes load and stray capacitance
Input PRR = 1.0 MHz; t
w
= 500 ns
FIGURE 1. AC Test Circuit
Input = AC Waveform; t
r
= t
f
= 1.8 ns;
PRR = 10 MHz; Duty Cycle = 50%
FIGURE 2. I
CCD
Test Circuit
FIGURE 3. AC Waveforms
Symbol Parameter
V
CC
T
A
= +25°CT
A
= −40°C to +85°C
Units Conditions
Figure
(V) Min Typ Max Min Max Number
t
PLH
, Propagation Delay 1.8 ± 0.15 2.0 6.7 12.5 2.0 13.0
ns
t
PHL
2.5 ± 0.2 1.2 4.1 7.0 1.2 7.5 C
L
= 15 pF,
Figures
1, 3
3.3 ± 0.3 0.8 3.0 4.8 0.8 5.2 R
L
= 1 MΩ
5.0 ± 0.5 0.5 2.2 3.5 0.5 3.8
t
PLH,
Propagation Delay 3.3 ± 0.3 1.2 3.8 5.4 1.2 5.9
ns
C
L
= 50 pF,
Figures
1, 3
t
PHL
5.0 ± 0.5 0.8 2.9 4.2 1.0 4.6 R
L
= 500Ω
C
IN
Input Capacitance 0 2.5 pF
C
PD
Power Dissipation Capacitance 3.3 15
pF (Note 3) Figure 2
5.0 19