74HCT4514U 查看數據表（PDF） - Philips Electronics
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74HCT4514U Datasheet PDF : 9 Pages
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Philips Semiconductors
4-to-16 line decoder/demultiplexer with
input latches
Product specification
74HC/HCT4514
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
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 UNIT LOAD COEFFICIENT
An
0.65
LE
1.40
E
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
tPHL/ tPLH
tPHL/ tPLH
tTHL/ tTLH
propagation delay
An to Qn
propagation delay
LE to Qn
propagation delay
E to Qn
output transition time
30 55
69
29 50
63
17 40
50
7 15
19
83 ns 4.5 Fig.6
75 ns 4.5 Fig.6
60 ns 4.5 Fig.6
22 ns 4.5 Fig.6
tW
latch enable pulse width
HIGH
16
4
tsu
set-up time
An to LE
18 9
th
hold time
An to LE
3 −3
20
24
23
27
3
3
ns 4.5 Fig.7
ns 4.5 Fig.7
ns 4.5 Fig.7
September 1993
7
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