74HC273 Datasheet, PDF (6/8 Pages) NXP Semiconductors – Octal D-type flip-flop with reset; positive-edge trigger

Philips Semiconductors
Octal D-type flip-flop with reset;
positive-edge trigger
Product specification
74HC/HCT273
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
I_CC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆I_CC) for a unit load of 1 is given in the family specifications.
To determine ∆I_CC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
MR
CP
D_n
UNIT LOAD COEFFICIENT
1.00
1.75
0.15
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
min.
+25
typ.
74HCT
−40 to +85
max. min. max.
−40 to +125
min. max.
UNIT _VCC WAVEFORMS
(V)
t_PHL/ t_PLH
t_PHL
t_THL/ t_TLH
propagation delay
CP to Q_n
propagation delay
MR to Q_n
output transition time
16 30
38
23 34
43
7 15
19
45 ns 4.5 Fig.6
51 ns 4.5 Fig.7
22 ns 4.5 Fig.6
t_W
clock pulse width
16 9
HIGH or LOW
t_W
master reset pulse width 16 8
LOW
t_rem
removal time
MR to CP
10 −2
t_su
set-up time
D_n to CP
12 5
t_h
hold time
D_n to CP
3 −4
f_max
maximum clock pulse 30 56
frequency
20
24
20
24
13
15
15
18
3
3
24
20
ns 4.5 Fig.6
ns 4.5 Fig.7
ns 4.5 Fig.7
ns 4.5 Fig.8
ns 4.5 Fig.8
MHz 4.5 Fig.6
September 1993
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