74HC573NB 查看數據表（PDF） - Philips Electronics
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74HC573NB Datasheet PDF : 7 Pages
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Philips Semiconductors
Octal D-type transparent latch; 3-state
Product specification
74HC/HCT573
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
Dn
LE
OE
UNIT LOAD COEFFICIENT
0.35
0.65
1.25
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
Dn to Qn
20 35
44
53 ns 4.5 Fig.6
tPHL/ tPLH propagation delay
LE to Qn
18 35
44
53 ns 4.5 Fig.7
tPZH/ tPZL 3-state output enable
17 30
38
45 ns 4.5 Fig.8
time
OE to Qn
tPHZ/ tPLZ 3-state output disable
18 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
enable pulse width
16 5
HIGH
tsu
set-up time
Dn to LE
th
hold time
Dn to LE
13 7
94
20
24
16
20
11
14
ns 4.5 Fig.7
ns 4.5 Fig.9
ns 4.5 Fig.9
December 1990
6
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