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HD74LS155 датащи(PDF) 4 Page - Renesas Technology Corp

номер детали HD74LS155
подробное описание детали  Dual 2-line-to-4-line Decoders / Demultiplexers
PDF  7 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS155 датащи(HTML) 4 Page - Renesas Technology Corp

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HD74LS155
Rev.2.00, Feb.18.2005, page 4 of 6
Switching Characteristics
(VCC = 5 V, Ta = 25°C)
Item
Symbol
Inputs
Output
Levels
of logic
min.
typ.
max.
Unit
Condition
tPLH
—
10
15
ns
tPHL
A, B, 2C
1G or 2G
Y
2
—
19
30
ns
tPLH
—
17
26
ns
tPHL
A or B
Y
3
—
19
30
ns
tPLH
—
18
27
ns
Propagation
delay time
tPHL
1C
Y
3
—
18
27
ns
CL = 15 pF,
RL = 2 k
Ω
Testing Method
Test Circuit
4.5V
1Y0
Load circuit 1
Output
VCC
RL
CL
Input
P.G.
Zout = 50
Ω
1C
B
A
2C
2G
1G
1Y2
1Y3
2Y0
2Y1
2Y2
2Y3
1Y1
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Same as Load Circuit 1.
Output
Notes:
1.
CL includes probe and jig capacitance.
2.
All diodes are 1S2074(H).



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