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
UNITSTYP MAX MAX MAX
HC TYPES
Propagation Delay,
nA, nB, nC, nD to nY
t
PLH,
t
PHL
C
L
= 50pF 2 - 100 125 150 ns
4.5 - 20 25 30 ns
6 - 17 21 26 ns
C
L
= 15pF 5 8 - - - ns
Output Transition Times
(Figure 1)
t
TLH
, t
THL
C
L
= 50pF 2 - 75 95 110 ns
4.5 - 15 19 22 ns
6 - 13 16 19 ns
Input Capacitance C
IN
---1010 10pF
Power Dissipation
Capacitance (Notes 2, 3)
C
PD
C
L
= 15pF 5 22 - - - pF
NOTES:
2. C
PD
is used to determine the dynamic power consumption, per gate.
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 Circuit and Waveform
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%
CD54HC4002, CD74HC4002