參數(shù)資料
型號: 74HCT4514
廠商: NXP Semiconductors N.V.
英文描述: 4-to-16 line decoder/demultiplexer with input latches(帶輸入鎖存的4-16線譯碼器/多路分解器)
中文描述: 4至16線譯碼器/多路解復(fù)用器的輸入鎖存器(帶輸入鎖存的4-16線譯碼器/多路分解器)
文件頁數(shù): 7/9頁
文件大?。?/td> 76K
代理商: 74HCT4514
September 1993
7
Philips Semiconductors
Product specification
4-to-16 line decoder/demultiplexer with
input latches
74HC/HCT4514
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.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
INPUT
UNIT LOAD COEFFICIENT
A
n
LE
E
0.65
1.40
1.00
SYMBOL PARAMETER
T
amb
(
°
C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS
+25
40 to +85
40 to +125
min.
typ.
max.
min.
max.
min.
max.
t
PHL
/ t
PLH
propagation delay
A
n
to Q
n
propagation delay
LE to Q
n
propagation delay
E to Q
n
output transition time
30
55
69
83
ns
4.5
Fig.6
t
PHL
/ t
PLH
29
50
63
75
ns
4.5
Fig.6
t
PHL
/ t
PLH
17
40
50
60
ns
4.5
Fig.6
t
THL
/ t
TLH
7
15
19
22
ns
4.5
Fig.6
t
W
latch enable pulse width
HIGH
set-up time
A
n
to LE
hold time
A
n
to LE
16
4
20
24
ns
4.5
Fig.7
t
su
18
9
23
27
ns
4.5
Fig.7
t
h
3
3
3
3
ns
4.5
Fig.7
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