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HD74LS123RPEL 데이터 시트보기 (PDF) - Renesas Electronics
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HD74LS123RPEL
Dual Retriggerable Monostable Multivibrators (with Clear)
Renesas Electronics
HD74LS123RPEL Datasheet PDF : 9 Pages
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HD74LS123
Testing Method
Test Circuit
A
1
Input
P.G.
Z
out
= 50
Ω
B
1
Input
P.G.
Z
out
= 50
Ω
CLR Input
P.G.
Z
out
= 50
Ω
V
CC
Output Q
Rext
Cext
/Cext
Cext Rext V
CC
/Cext
Q
C
L
R
L
Load circuit 1
CLR
Output
Q
Q
Same as Load Circuit 1.
Notes: 1. C
L
includes probe and jig capacitance.
2. All diodes are 1S2074(H).
Waveform
t
w (in)
≥
40ns
3V
A
1.3V 1.3V
1.3V
t
w (in)
≥
40ns
B
0V
t
w (in)
3V
≥
40ns
1.3V 1.3V
1.3V
t
w (in)
0V
≥
40ns
t
w (CLR)
≥
40ns
3V
Clear
1.3V
1.3V
0V
t
PLH
t
PLH
V
OH
Q
1.3V
1.3V
1.3V
1.3V
t
PHL
t
w (out)
V
OL
t
PLH
Q
1.3V
1.3V
t
PHL
Note: Input pulse; t
TLH
≤
15 ns, t
THL
≤
6 ns.
t
w (out)
1.3V
t
PHL
1.3V
V
OH
V
OL
Rev.2.00, Feb.18.2005, page 6 of 8
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