NC7ST04_04 Datasheet, PDF (3/8 Pages) Fairchild Semiconductor – TinyLogic HST Inverter

AC Electrical Characteristics
Symbol
Parameter
V_CC
T_A = +25°C
T_A = −40°C to +85°C
Units
(V)
Min
Typ
Max
Min
Max
Conditions
Figure
Number
t_PLH,
Propagation Delay
5.0
t_PHL
4.5
5.5
3.5
12
6.0
17
6.2
16
11.4
27
4.3
14
11.1
26
ns C_L = 15 pF
20
31
18
ns C_L = 50 pF
30
Figures
1, 3
t_TLH,
Output Transition Time
5.0
t_THL
4.5
5.5
4
10
11
25
10
21
ns C_L = 15 pF
31
26
ns C_L = 50 pF
Figures
1, 3
C_IN
Input Capacitance
Open
2
10
pF
C_PD
Power Dissipation Capacitance 5.0
6
pF (Note 3)
Figure 2
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_CCstatic).
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; PRR = Variable; Duty Cycle = 50%
FIGURE 2. I_CCD Test Circuit
FIGURE 3. AC Waveforms
3
www.fairchildsemi.com