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74HCT670 データシート(PDF) 5 Page - NXP Semiconductors

部品番号 74HCT670
部品情報  4 x 4 register file; 3-state
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メーカー  PHILIPS [NXP Semiconductors]
ホームページ  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT670 データシート(HTML) 5 Page - NXP Semiconductors

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December 1990
5
Philips Semiconductors
Product specification
4 x 4 register file; 3-state
74HC/HCT670
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
ICC category: MSI
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tr =tf = 6 ns; CL =50pF
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
−40 to +85 −40 to+125
min.
typ.
max. min. max. min.
max.
tPHL/ tPLH
propagation delay
RA, RB to Qn
58
21
17
195
39
33
245
49
42
295
59
50
ns
2.0
4.5
6.0
Fig.6
tPHL/ tPLH
propagation delay
WE to Qn
77
28
22
250
50
43
315
63
54
375
75
64
ns
2.0
4.5
6.0
Fig.7
tPHL/ tPLH
propagation delay
Dn to Qn
74
27
22
250
50
43
315
63
54
375
75
64
ns
2.0
4.5
6.0
Fig.7
tPZH/ tPZL
3-state output enable time
RE to Qn
39
14
11
150
30
26
190
38
33
225
45
38
ns
2.0
4.5
6.0
Fig.9
tPHZ/ tPLZ
3-state output disable time
RE to Qn
47
17
14
150
30
26
190
38
33
225
45
38
ns
2.0
4.5
6.0
Fig.9
tTHL/ tTLH
output transition time
14
5
4
60
12
10
75
15
13
90
18
15
ns
2.0
4.5
6.0
Fig.6
tW
write enable pulse width
LOW
80
16
14
14
5
4
100
20
17
120
24
20
ns
2.0
4.5
6.0
Fig.8
tsu
set-up time
Dn to WE
60
12
10
3
1
1
75
15
13
90
18
15
ns
2.0
4.5
6.0
Fig.8
tsu
set-up time
WA, WB to WE
60
12
10
6
2
2
75
15
13
90
18
15
ns
2.0
4.5
6.0
Fig.8
th
hold time
Dn to WE
5
5
5
0
0
0
5
5
5
5
5
5
ns
2.0
4.5
6.0
Fig.8
th
hold time
WA, WB to WE
5
5
5
0
0
0
5
5
5
5
5
5
ns
2.0
4.5
6.0
Fig.8
tlatch
latch time
WE to RA, RB
100
20
17
28
10
8
125
25
21
150
30
26
ns
2.0
4.5
6.0
Fig.8


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