MC74F568 查看數據表（PDF） - Motorola => Freescale
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MC74F568 Datasheet PDF : 7 Pages
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MC54/74F568 • MC54/74F569
AC OPERATING REQUIREMENTS
Symbol
ts(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
ts(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
th(H)
th(L)
tw(H)
tw(L)
tw(L)
trec
Parameter
Setup Time, HIGH or LOW
Pn to CP
Hold Time, HIGH or LOW
Pn to CP
Setup Time, HIGH or LOW
CEP or CET to CP
Hold Time, HIGH or LOW
CEP or CET to CP
Setup Time, HIGH or LOW
PE to CP
Hold Time, HIGH or LOW
PE to CP
Setup Time, HIGH or LOW
U/D to CP (F568)
Setup Time, HIGH or LOW
U/D to CP (F569)
Hold Time, HIGH or LOW
U/D to CP
Setup Time, HIGH or LOW
SR to CP
Hold Time, HIGH or LOW
SR to CP
CP Pulse Width HIGH or LOW
MR Pulse Width, LOW
MR Recovery Time
54 / 74F
54F
74F
TA = + 25°C
VCC = + 5.0 V
TA = – 55°C to + 125°C
VCC = 5.0 V ± 10%
TA = 0°C to + 70°C
VCC = 5.0 V ± 10%
Min
Max
Min
Max
Min
Max
Unit
4.0
5.5
4.0
5.5
3.0
3.5
3.0
3.5
4.5
4.5
ns
3.5
3.5
5.0
7.0
5.0
7.0
0
0
0
0
6.0
6.0
ns
0
0
8.0
10
8.0
10
0
0
0
0
9.0
9.0
ns
0
0
11
13.5
16.5
18.5
12.5
17.5
ns
11
13.5
7.0
10
12.5
8.0
ns
0
0
0
0
0
0
ns
10
12
8.0
10.5
0
0
0
0
11
9.5
ns
0
0
4.0
6.0
6.0
8.0
4.5
6.5
ns
4.5
6.0
5.0
ns
6.0
8.0
7.0
ns
FAST AND LS TTL DATA
4-225
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