74HCT564N 查看數據表（PDF） - Philips Electronics
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74HCT564N Datasheet PDF : 7 Pages
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Philips Semiconductors
Octal D-type flip-flop; positive-edge trigger;
3-state; inverting
Product specification
74HC/HCT564
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (∆ICC) for a unit load of 1 is given in the family specifications.
To determine ∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
OE
D0 to D7
CP
UNIT LOAD COEFFICIENT
0.80
0.25
1.00
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL = 50 pF
Tamb (°C)
TEST CONDITIONS
SYMBOL PARAMETER
min.
+25
typ.
74HCT
−40 to +85
max. min. max.
−40 to +125
min. max.
UNIT
VCC
(V)
WAVEFORMS
tPHL/ tPLH propagation delay
CP to Qn
19 35
44
53 ns 4.5 Fig.6
tPZH/ tPZL 3-state output enable
19 35
44
53 ns 4.5 Fig.8
time OE to Qn
tPHZ/ tPLZ 3-state output disable
19 30
38
45 ns 4.5 Fig.8
time OE to Qn
tTHL/ tTLH output transition time
5 12
15
18 ns 4.5 Fig.6
tW
clock pulse width
18 8
HIGH or LOW
tsu
set-up time
Dn to CP
12 3
th
hold time
Dn to CP
3 −2
fmax
maximum clock pulse 27 56
frequency
23
27
15
18
3
3
22
18
ns 4.5 Fig.6
ns 4.5 Fig.7
ns 4.5 Fig.7
MHz 4.5 Fig.6
December 1990
6
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