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4
NC7W
Z38
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) + (ICC static).
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 Waveform; t
r = tf = 1.8 ns
PRR
= 10 MHz; 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
tPZL
Propagation Delay
1.8
± 0.15
2.0
5.2
9.2
2.0
9.6
ns
CL = 50 pF
2.5
± 0.2
1.5
3.5
5.7
1.5
6.1
RU
= 500
Figures
1, 3
3.3
± 0.3
1.0
2.8
4.1
1.0
4.5
RD
= 500
5.0
± 0.5
0.5
2.2
3.4
0.5
3.6
VI = 2 × VCC
tPLZ
Propagation Delay
1.8
± 0.15
2.0
4.6
9.2
2.0
9.6
ns
CL = 50 pF
2.5
± 0.2
1.5
3.2
5.7
1.5
6.1
RU
= 500
Figures
1, 3
3.3
± 0.3
1.0
2.4
4.1
1.0
4.5
RD
= 500
5.0
± 0.5
0.5
1.6
3.4
0.5
3.6
VI = 2 × VCC
CIN
Input Capacitance
0
2.5
pF
COUT
Output Capacitance
0
4.2
pF
CPD
Power Dissipation
3.3
7
pF
(Note 3)
Figure 2
Capacitance
5.0
9