74HC574 Datasheet, PDF (6/7 Pages) NXP Semiconductors – Octal D-type flip-flop; positive edge-trigger; 3-state

Philips Semiconductors
Octal D-type flip-flop; positive edge-trigger;
3-state
Product specification
74HC/HCT574
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
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
D_n
OE
CP
UNIT LOAD COEFFICIENT
0.5
1.25
1.5
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t_r = t_f = 6 ns; C_L = 50 pF
T_amb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
74HCT
+25
−40 to +85
−40 to +125
UNIT
V_CC
(V)
WAVEFORMS
min. typ. max. min. max. min. max.
t_PHL/ t_PLH propagation delay
CP to Q_n
18 33
41
50 ns 4.5 Fig.6
t_PZH/ t_PZL 3-state output enable
19 33
41
50 ns 4.5 Fig.7
time OE to Q_n
t_PHZ/ t_PLZ 3-state output disable
16 28
35
42 ns 4.5 Fig.7
time OE to Q_n
t_THL/ t_TLH output transition time
5 12
15
18 ns 4.5 Fig.6
t_W
clock pulse width
16 7
HIGH or LOW
t_su
set-up time
D_n to CP
12 3
t_h
hold time
D_n to CP
5 −1
f_max
maximum clock pulse 30 69
frequency
20
24
15
18
5
5
24
20
ns 4.5 Fig.6
ns 4.5 Fig.8
ns 4.5 Fig.8
MHz 4.5 Fig.6
December 1990
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