Datasheet

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NC7ST86
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 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 Waveforms; PRR = Variable; 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
5.0
4.4 14
ns C
L
= 15 pF
Figures
1, 3
t
PHL
7.4 19
4.5
6.6 18 22
ns C
L
= 50 pF
13.1 29 33
5.5
5.6 16 20
12.5 28 32
t
TLH
, Output Transition Time 5.0 4 10 ns C
L
= 15 pF
Figures
1, 3
t
THL
4.5 11 25 31
ns C
L
= 50 pF
5.5 10 21 26
C
IN
Input Capacitance Open 2 10 pF
C
PD
Power Dissipation Capacitance 5.0 8 pF (Note 3) Figure 2