Datasheet

5
(A > B) IN, (A < B) IN, (A = B) IN
to (A > B) OUT, (A < B) OUT
t
PLH,
t
PHL
C
L
= 50pF 2 - - 140 - 175 - 210 ns
4.5 - - 28 - 35 - 42 ns
C
L
= 15pF 5 - 11 - - - - - ns
C
L
= 50pF 6 - - 24 - 30 - 36 ns
(A > B) IN to (A = B) OUT t
PLH,
t
PHL
C
L
= 50pF 2 - - 120 - 150 - 180 ns
4.5 - - 24 - 30 - 36 ns
C
L
= 15pF 5 - 9 - - - - - ns
C
L
= 50pF 6 - - 20 - 26 - 31 ns
Power Dissipation Capacitance
(Notes 3, 4)
C
PD
-5-24-----pF
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
- - - - 10 - 10 - 10 pF
HCT TYPES
Propagation Delay,
An, Bn to (A > B) OUT,
(A < B) OUT
t
PLH,
t
PHL
C
L
= 50pF 4.5 - - 37 - 46 - 56 ns
C
L
= 15pF 5 - 15 - - - - - ns
An, Bn to (A = B) OUT t
PLH,
t
PHL
C
L
= 50pF 4.5 - - 40 - 50 - 60 ns
C
L
= 15pF 5 - 17 - - - - - ns
(A > B) IN, (A < B) IN, (A = B) IN
to (A > B) OUT, (A < B) OUT
t
PLH,
t
PHL
C
L
= 50pF 4.5 - - 30 - 38 - 45 ns
C
L
= 15pF 5 - 12 - - - - - ns
(A > B) IN to (A = B) OUT t
PLH,
t
PHL
C
L
= 50pF 4.5 - - 31 - 39 - 47 ns
C
L
= 15pF 5 - 13 - - - - - ns
Output Transition Times
(Figure 1)
t
TLH
, t
THL
C
L
= 50pF 4.5 - - 15 - 19 - 22 ns
Power Dissipation Capacitance
(Notes 3, 4)
C
PD
-5-26-----pF
Input Capacitance C
IN
- - - - 10 - 10 - 10 pF
NOTES:
3. C
PD
is used to determine the dynamic power consumption, per gate/package.
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.
Switching Specifications Input t
r
, t
f
= 6ns (Continued)
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
Test Circuits and Waveforms
FIGURE 1. HC AND HCU TRANSITION TIMES AND PROPAGA-
TION DELAY TIMES, COMBINATION LOGIC
FIGURE 2. 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%
CD54HC85, CD74HC85, CD54HCT85, CD74HCT85