參數資料
型號: MC74AC273N
廠商: ON SEMICONDUCTOR
元件分類: 通用總線功能
英文描述: OCTAL D FLIP-FLOP
中文描述: AC SERIES, POSITIVE EDGE TRIGGERED D FLIP-FLOP, TRUE OUTPUT, PDIP20
封裝: PLASTIC, DIP-20
文件頁數: 4/7頁
文件大小: 187K
代理商: MC74AC273N
MC74AC273 MC74ACT273
5-4
FACT DATA
AC CHARACTERISTICS
(For Figures and Waveforms — See Section 3)
Symbol
Parameter
(V)
74AC
74AC
Unit
No.
VCC*
TA = +25
°
C
CL = 50 pF
TA = –40
°
C
to +85
°
C
CL = 50 pF
Fig.
Min
Typ
Max
Min
Max
fmax
Maximum Clock
Frequency
3.3
5.0
90
140
125
175
75
125
Mhz
3-3
tPLH
Propagation Delay
Clock to Output
3.3
5.0
4.0
3.0
7.0
5.5
12.5
9.0
3.0
2.5
14.0
10.0
ns
3-6
tPHL
Propagation Delay
Clock to Output
3.3
5.0
4.0
3.0
7.0
5.0
13.0
10.0
3.5
2.5
14.5
11.0
ns
3-6
tPHL
Propagation Delay
MR to Output
3.3
5.0
4.0
3.0
7.0
5.0
13.0
10.0
3.5
2.5
14.0
10.5
ns
3-6
* Voltage Range 3.3 V is 3.3 V
±
0.3 V.
Voltage Range 5.0 V is 5.0 V
±
0.5 V.
AC OPERATING REQUIREMENTS
Symbol
Parameter
(V)
74AC
74AC
Unit
No.
VCC*
TA = +25
°
C
CL = 50 pF
TA = –40
°
C
to +85
°
C
CL = 50 pF
Fig.
Typ
Guaranteed Minimum
ts
Setup Time, HIGH or LOW
Data to CP
3.3
5.0
3.5
2.5
5.5
4.0
6.0
4.5
ns
3-9
th
Hold Time, HIGH or LOW
Data to CP
3.3
5.0
–2.0
–1.0
0
0
ns
3-9
1.0
1.0
tw
Clock Pulse Width
HIGH or LOW
3.3
5.0
3.5
2.5
5.5
4.0
6.0
4.5
ns
3-6
tw
MR Pulse Width
HIGH or LOW
3.3
5.0
2.0
1.5
5.5
4.0
6.0
4.5
ns
3-6
trec
Recovery Time
MR to CP
3.3
5.0
1.5
1.0
3.5
2.0
4.5
3.0
ns
3-9
* Voltage Range 3.3 V is 3.3 V
±
0.3 V.
Voltage Range 5.0 V is 5.0 V
±
0.5 V.
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