74HC273 Philips, 74HC273 Datasheet - Page 6

• Manufacturer Part Number: 74HC273
• Description: Octal D-type flip-flop with reset positive-edge trigger
• Manufacturer: Philips

Philips Semiconductors
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
Output capability: standard
I
Note to HCT types
The value of additional quiescent supply current ( I
To determine I
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
September 1993
CC
INPUT
MR
CP
D
SYMBOL PARAMETER
t
t
t
t
t
t
t
t
f
PHL
PHL
THL
W
W
rem
su
h
max
Octal D-type flip-flop with reset;
positive-edge trigger
n
category: MSI
/ t
/ t
TLH
PLH
propagation delay
propagation delay
output transition time
clock pulse width
master reset pulse width
removal time
set-up time
hold time
maximum clock pulse
r
CP to Q
MR to Q
HIGH or LOW
LOW
MR to CP
D
D
frequency
= t
n
n
UNIT LOAD COEFFICIENT
1.00
1.75
0.15
CC
f
to CP
to CP
= 6 ns; C
per input, multiply this value by the unit load coefficient shown in the table below.
n
n
L
= 50 pF
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
16
16
10
12
3
30
min.
16
23
9
8
56
7
5
typ.
2
4
25
CC
30
34
15
max. min. max.
) for a unit load of 1 is given in the family specifications.
6
T
74HCT
amb
20
20
13
15
3
24
40 to 85
( C)
38
43
19
24
24
15
18
3
20
min.
40 to 125
45
51
22
max.
.
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
MHz 4.5
74HC/HCT273
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
V
TEST CONDITIONS
(V)
Product specification
CC
WAVEFORMS
Fig.6
Fig.7
Fig.6
Fig.6
Fig.7
Fig.7
Fig.8
Fig.8
Fig.6