Philips Semiconductors
Octal D-type flip-flop with reset;
positive-edge trigger
Product specification
74AHC273; 74AHCT273
AC CHARACTERISTICS
Type 74AHC273
Ground = 0 V; tr = tf ≤ 3.0 ns.
SYMBOL PARAMETER
TEST CONDITIONS
WAVEFORMS CL
Tamb (°C)
25
−40 to +85 −40 to +125 UNIT
MIN. TYP. MAX. MIN. MAX. MIN. MAX.
VCC = 3.0 to 3.6 V; note 1
tPHL/tPLH
tPHL
fmax
propagation delay
CP to Qn
propagation delay
MR to Qn
maximum clock
pulse frequency
see Figs 6 and 9
see Figs 7 and 9
15 pF −
−
75
tPHL/tPLH
tPHL
tW
propagation delay
CP to Qn
propagation delay
MR to Qn
clock pulse width
HIGH or LOW
see Figs 6 and 9
see Figs 7 and 9
see Figs 6 and 9
50 pF −
−
5.0
master reset
see Figs 7 and 9
5.0
pulse width LOW
trem
removal time
2.5
MR to CP
tsu
set-up time
see Figs 8 and 9
3.0
Dn to CP
th
hold time
1.0
Dn to CP
fmax
maximum clock
50
pulse frequency
6.0 13.6 1.0
5.1 13.6 1.0
120 −
65
8.6 17.1 1.0
7.3 17.1 1.0
−
−
6.5
−
−
6.0
−
−
2.5
−
−
3.0
−
−
1.0
75 −
45
16.0 1.0
16.0 1.0
−
65
19.5 1.0
19.5 1.0
−
6.5
−
6.0
−
2.5
−
3.0
−
1.0
−
45
17.0 ns
17.0 ns
−
ns
21.5 ns
21.5 ns
−
ns
−
ns
−
ns
−
ns
−
ns
−
ns
1999 Sep 01
9