CD74HCU04_15 Datasheet, PDF (4/15 Pages) Texas Instruments – High-Speed CMOS Logic Hex Inverter

CD74HCU04
Switching Specifications Input t_r, t_f = 6ns
PARAMETER
TEST
V_CC
25^oC
-40^oC TO 85^oC -55^oC TO 125^oC
SYMBOL CONDITIONS (V) MIN TYP MAX MIN MAX MIN MAX UNITS
Propagation Delay,
t_PLH, t_PHL C_L = 50pF
2
-
- 70
-
Input to Output Y (Figure 1)
C_L = 50pF
4.5 -
-
14
-
C_L = 15pF
5
-5
-
-
C_L = 50pF
6
-
- 12
-
Transition Times (Figure 1)
t_TLH, t_THL C_L = 50pF
2
-
- 75
-
4.5 -
-
15
-
90
-
105
ns
18
-
21
ns
-
-
-
ns
15
-
18
ns
95
18
110
ns
19
-
22
ns
6
-
- 13
-
16
-
19
ns
Input Capacitance
Power Dissipation Capacitance
(Notes 2, 3)
C_I
C_PD
-
See Figure 3
pF
-
5
- 14 -
-
-
-
-
pF
NOTES:
2. C_PD is used to determine the dynamic power consumption, per inverter.
3. P_D = V_CC2 f_i (C_PD + C_L) where f_i = input frequency, C_L = output load capacitance, V_CC = supply voltage.
Test Circuits and Waveforms
t_r = 6ns
INPUT
90%
50%
10%
t_f = 6ns
V_CC
GND
t_THL
INVERTING
OUTPUT
t_PHL
t_TLH
90%
50%
10%
t_PLH
FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC
Typical Performance Curves
25.0
22.5
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0
AMBIENT TEMPERATURE
T_A = 25^o C
V_CC = 6V
V_CC = 4.5V
V_CC = 2V
1
2
3
4
5
6
V_I, INPUT VOLTAGE (V)
FIGURE 2. TYPICAL INVERTER SUPPLY CURRENT AS FUNCTION OF INPUT VOLTAGE
4