NXP Semiconductors
74HC273; 74HCT273
Octal D-type flip-flop with reset; positive-edge trigger
Table 7.
Dynamic characteristics
…continued
GND (ground = 0 V); C
L
= 50 pF unless otherwise specified; for test circuit, see
Figure 10
Symbol Parameter
74HCT273
t
pd
propagation
delay
CP to Qn; see
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
t
PHL
HIGH to LOW
propagation
delay
transition time
pulse width
MR to Qn; see
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
Qn output; see
V
CC
= 4.5 V
t
W
CP input; see
V
CC
= 4.5 V
MR input LOW;
see
V
CC
= 4.5 V
t
rec
t
su
t
h
f
max
recovery time
set-up time
hold time
maximum
frequency
MR to CP; see
V
CC
= 4.5 V
Dn to CP; see
V
CC
= 4.5 V
Dn to CP; see
V
CC
= 4.5 V
CP input; see
V
CC
= 4.5 V
V
CC
= 5.0 V; C
L
= 15 pF
C
PD
power
dissipation
capacitance
per package;
V
I
= GND to V
CC
1.5 V
Conditions
Min
25
C
Typ
Max
40 C
to +85
C 40 C
to +125
C
Unit
Min
Max
Min
Max
-
-
-
-
-
16
16
15
23
20
7
9
30
-
34
-
15
-
-
-
-
-
-
20
38
-
43
-
19
-
-
-
-
-
-
24
45
-
51
-
22
-
ns
ns
ns
ns
ns
ns
t
t
16
10
12
3
30
-
-
8
2
5
4
56
36
23
-
-
-
-
-
-
-
20
13
15
3
24
-
-
-
-
-
-
-
-
-
24
15
18
3
20
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
MHz
MHz
pF
[1]
[2]
[3]
t
pd
is the same as t
PHL
and t
PLH
.
t
t
is the same as t
THL
and t
TLH
.
C
PD
is used to determine the dynamic power dissipation (P
D
in
W).
P
D
= C
PD
V
CC2
f
i
+ (C
L
V
CC2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
(C
L
V
CC2
f
o
) = sum of outputs;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V.
74HC_HCT273
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 4 — 10 June 2013
9 of 21
PHILIPS [ NXP SEMICONDUCTORS ]
