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74HCT4543 数据表(PDF) 9 Page - NXP Semiconductors

部件名 74HCT4543
功能描述  BCD to 7-segment latch/decoder/driver for LCDs
Download  11 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

74HCT4543 数据表(HTML) 9 Page - NXP Semiconductors

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December 1990
9
Philips Semiconductors
Product specification
BCD to 7-segment latch/decoder/driver for
LCDs
74HC/HCT4543
Note to HCT types
The value of additional quiescent supply current (
∆ICC) for a unit load of 1 is given here.
To determine
∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr = tf = 6 ns; CL =50pF
INPUT
UNIT LOAD COEFFICIENT
D0, D1, D2
D3
BI
LD
PH
1.00
0.50
0.50
1.50
1.25
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT
VCC
(V)
OTHER
+25
−40 to +85 −40 to +125
min.
typ.
max. min.
max.
min.
max.
tPHL/ tPLH
propagation delay
Dn to Qn
38
80
100
120
ns
4.5
Fig.12
tPHL/ tPLH
propagation delay
LD to Qn
36
68
85
102
ns
4.5
Fig.13
tPHL/ tPLH
propagation delay
BI to Qn
32
66
83
99
ns
4.5
Fig.14
tPHL/ tPLH
propagation delay
PH to Qn
24
66
83
99
ns
4.5
tTHL/ tTLH
output transition time
23
50
63
75
ns
4.5
Figs 12, 13 and 14
tW
LD pulse width
HIGH or LOW
10
4
13
15
ns
4.5
Fig.13
tsu
set-up time
Dn to LD
12
4
15
18
ns
4.5
Fig.15
th
hold time
Dn to LD
8
2
10
12
ns
4.5
Fig.15


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