Datasheet

5
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
HC TYPES
Propagation Delay,
A to Y
t
PLH
, t
PHL
C
L
= 50pF 2 - - 135 - 170 - 205 ns
C
L
= 50pF 4.5 - - 27 - 34 - 41 ns
C
L
= 15pF 5 - 11 - ----ns
C
L
= 50pF 6 - - 23 - 29 - 35 ns
Output Transition Times 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
- - - - 10 - 10 - 10 pF
Power Dissipation Capacitance
(Notes 3, 4)
C
PD
- 5-20-----pF
HCT TYPES
Propagation Delay,
A to Y
t
PLH
, t
PHL
C
L
= 50pF 4.5 - - 38 - 48 - 57 ns
C
L
= 15pF 5 - 16 - ----ns
Output Transition Times t
TLH
, t
THL
C
L
= 50pF 4.5 - - 15 - 19 - 22 ns
Input Capacitance C
I
- - - - 10 - 10 - 10 pF
Power Dissipation Capacitance
(Notes 3, 4)
C
PD
- 5-20-----pF
NOTES:
3. C
PD
is used to determine the dynamic power consumption, per inverter.
4. 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 4. HC TRANSITION TIMES AND PROPAGATION
DELAY TIMES, COMBINATION LOGIC
FIGURE 5. HCT 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%
t
PHL
t
PLH
t
THL
t
TLH
2.7V
1.3V
0.3V
1.3V
10%
INVERTING
OUTPUT
INPUT
GND
3V
t
r
= 6ns
t
f
= 6ns
90%