3
www.fairchildsemi.com
NC7S04
AC Electrical Characteristics
Note 3: 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. (See Figure 2.) CPD is related to ICCD dynamic operating current by the expression:
ICCD = (CPD) (VCC) (fIN) + (ICCstatic).
AC Loading and Waveforms
CL 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. ICCD Test Circuit
FIGURE 3. AC Waveforms
Symbol
Parameter
VCC
TA = +25°CTA = 40°C to +85°C
Units
Conditions
Figure
(V)
Min
Typ
Max
Min
Max
Number
tPLH,
Propagation Delay
5.0
3.0
15.0
ns
CL = 15 pF
Figures
1, 3
tPHL
2.0
18.0
100.0
125.0
ns
CL = 50 pF
3.0
10.0
27.0
35.0
4.5
7.0
20.0
25.0
6.0
17.0
21.0
tTLH,
Output Transition Time
5.0
3.0
10.0
ns
CL = 15 pF
Figures
1, 3
tTHL
2.0
25.0
125.0
155.0
ns
CL = 50 pF
3.0
16.0
35.0
45.0
4.5
11.0
25.0
31.0
6.0
9.0
21.0
26.0
CIN
Input Capacitance
Open
2.0
10.0
pF
CPD
Power Dissipation Capacitance
5.0
6.0
pF
(Note 3)
Figure 2