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HD74HC670P 查看數據表(PDF) - Renesas Electronics
零件编号
产品描述 (功能)
生产厂家
HD74HC670P
4-by-4 Register File (with 3-state outputs)
Renesas Electronics
HD74HC670P Datasheet PDF : 9 Pages
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9
HD74HC670
Test Circuit
V
CC
Input
Pulse Generator
Z
out
= 50
Ω
Input
Pulse Generator
Z
out
= 50
Ω
V
CC
Output
G
R
G
W
Q
1
to Q
4
R
A
R
B
W
A
W
B
D
1
to D
4
1 k
Ω
S1
C
L
=
50 pF
OPEN
GND
V
CC
TEST
t
PLH
/ t
PHL
t
ZH
/ t
HZ
t
ZL
/ t
LZ
S1
OPEN
GND
V
CC
Note : 1. C
L
includes probe and jig capacitance.
Waveforms
•
Waveform – 1
t
r
t
f
90 %
90 %
V
CC
W
A
or W
B
50 %
50 %
10 %
t
su
10 %
t
h
0V
t
f
t
r
Data
90 %
90 %
V
CC
50 %
50 %
D
1
to D
4
10 %
t
su
10 %
t
h
0V
t
f
t
r
90 %
90 %
V
CC
G
W
50 %
50 %
10 % 10 %
0V
t
w
t
r
t
f
R
A
or R
B
t
latch
90 % 90 %
V
CC
50 %
50 %
10 %
10 %
0V
t
PHL
t
PLH
Q
1
to Q
4
50 % 50 %
10 % 10 %
90 %
V
OH
V
OL
t
THL
t
TLH
Note : 1. Input waveform : PRR
≤
1 MHz, duty cycle 50%, t
r
≤
6 ns, t
f
≤
6 ns
Rev.2.00 Mar 30, 2006 page 6 of 8
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