Datasheet

4
Switching Specifications Input t
r
, t
f
= 6ns
PARAMETER SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C -40
o
C TO 85
o
C -55
o
C TO 125
o
C
UNITSMIN TYP MAX MIN MAX MIN MAX
Propagation Delay,
Input to Output Y (Figure 1)
t
PLH
, t
PHL
C
L
= 50pF 2 - - 70 - 90 - 105 ns
C
L
= 50pF 4.5 - - 14 - 18 - 21 ns
C
L
= 15pF 5 - 5 - ----ns
C
L
= 50pF 6 - - 12 - 15 - 18 ns
Transition Times (Figure 1) t
TLH
, t
THL
C
L
= 50pF 2 - - 75 - 95 18 110 ns
4.5 - - 15 - 19 - 22 ns
6 - - 13 - 16 - 19 ns
Input Capacitance C
I
- See Figure 3 pF
Power Dissipation Capacitance
(Notes 2, 3)
C
PD
- 5-14-----pF
NOTES:
2. C
PD
is used to determine the dynamic power consumption, per inverter.
3. P
D
= V
CC
2
f
i
(C
PD
+ C
L
) where f
i
= input frequency, C
L
= output load capacitance, V
CC
= supply voltage.
Test Circuits and Waveforms
FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGATION DELAY TIMES, COMBINATION LOGIC
t
PHL
t
PLH
t
THL
t
TLH
90%
50%
10%
50%
10%
INVERTING
OUTPUT
INPUT
GND
V
CC
t
r
= 6ns t
f
= 6ns
90%
Typical Performance Curves
FIGURE 2. TYPICAL INVERTER SUPPLY CURRENT AS FUNCTION OF INPUT VOLTAGE
V
I
, INPUT VOLTAGE (V)
I
CC,
V
CC
TO GND CURRENT (mA)
25.0
22.5
20.0
17.5
15.0
12.5
10.0
7.5
5.0
2.5
0123456
V
CC
= 2V
V
CC
= 4.5V
V
CC
= 6V
AMBIENT TEMPERATURE
T
A
= 25
o
C
CD74HCU04