參數資料
型號： CD54HC670
廠商： Texas Instruments, Inc.
英文描述： High-Speed CMOS Logic 4x4 Register File
中文描述： 高速CMOS邏輯4 × 4寄存器文件
文件頁數： 6/14頁
文件大?。?/td> 284K
代理商： CD54HC670
6
Data to Output
t
PLH
, t
PHL
C
L
= 50pF
2
-
-
256
-
315
-
375
ns
4.5
-
-
50
-
63
-
75
ns
C
L
= 15pF
5
-
21
-
-
-
-
-
ns
C
L
= 50pF
6
-
-
43
-
54
-
64
ns
Output Disable Time
t
PLZ
, t
PHZ
C
L
= 50pF
2
-
-
150
-
190
-
225
ns
4.5
-
-
30
-
38
-
45
ns
C
L
= 15pF
5
-
12
-
-
-
-
-
ns
C
L
= 50pF
6
-
-
26
-
33
-
38
ns
Output Enable Time
t
PZL
, t
PZH
C
L
= 50pF
2
-
-
150
-
190
-
225
ns
4.5
-
-
30
-
38
-
45
ns
C
L
= 15pF
5
-
12
-
-
-
-
-
ns
C
L
= 50pF
6
-
-
26
-
33
-
38
ns
Output Transition Time
t
THL
, t
TLH
C
L
= 50pF
2
-
-
75
-
95
-
110
ns
4.5
-
-
15
-
19
-
22
ns
6
-
-
13
-
10
-
19
ns
Input Capacitance
C
I
C
L
= 50pF
-
10
-
10
-
10
-
10
pF
Three-State Output
Capacitance
C
O
-
-
20
-
20
-
20
-
20
pF
Power Dissipation Capacitance
(Notes 5, 6)
C
PD
C
L
= 15pF
5
-
59
-
-
-
-
-
pF
HCT TYPES
Propagation Delay
Reading Any Word
t
PHL,
t
PLH
C
L
= 50pF
4.5
-
-
40
-
50
-
53
ns
C
L
= 15pF
5
-
17
-
-
-
-
-
ns
Write Enable to Output
t
PHL,
t
PLH
C
L
= 50pF
4.5
-
-
50
-
63
-
75
ns
C
L
= 15pF
5
-
21
-
-
-
-
-
ns
Data to Output
t
PHL,
t
PLH
C
L
= 50pF
4.5
-
-
50
-
63
-
75
ns
C
L
= 15pF
5
-
21
-
-
-
-
-
ns
Output Disable Time
t
PLZ
, t
PHZ
C
L
= 50pF
4.5
-
-
35
-
44
-
53
ns
C
L
= 15pF
5
-
14
-
-
-
-
-
ns
Output Enable Time
t
PZL
, t
PZH
C
L
= 50pF
4.5
-
-
38
-
48
-
57
ns
C
L
= 15pF
5
-
16
-
-
-
-
-
ns
Output Transition Time
t
TLH
, t
THL
C
L
= 50pF
4.5
-
-
15
-
19
-
22
ns
Input Capacitance
C
I
C
L
= 50pF
-
10
-
10
-
10
-
10
pF
Three-State Output
Capacitance
C
O
-
-
20
-
20
-
20
-
20
pF
Power Dissipation Capacitance
(Notes 5, 6)
C
PD
C
L
= 15pF
5
-
66
-
-
-
-
-
pF
NOTES:
5. C
PD
is used to determine the dynamic power consumption, per output.
6. P
D
= C
PD
V
CC2
f
i
+
∑
C
L
V
CC2
f
O
where f
i
= Input Frequency, f
O
= Output Frequency, C
L
= Output Load Capacitance, V
CC
= Supply
Voltage.
Switching Specifications
C
L
= 50pF, Input t
r
, t
f
= 6ns
(Continued)
PARAMETER
SYMBOL
TEST
CONDITIONS
V
CC
(V)
25
o
C
-40
o
C TO
85
o
C
-55
o
C TO
125
o
C
UNITS
MIN
TYP
MAX
MIN
MAX
MIN
MAX
CD54HC670, CD74HC670, CD74HCT670
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