MC74F779D Просмотр технического описания (PDF) - Motorola => Freescale
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MC74F779D Datasheet PDF : 4 Pages
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MC74F779
AC ELECTRICAL CHARACTERISTICS
Symbol
fMAX
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPZH
tPZL
tPHZ
tPLZ
Parameter
Maximum Clock Frequency
Propagation Delay
CP to I/On
Propagation Delay
CP to TC
Propagation Delay
CET to TC
Enable Time from
High or Low Level
Disable Time from
High or Low Level
AC SETUP 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)
tw(H)
tw(L)
Parameter
Set-up time, HIGH or LOW
I/On to CP
Hold time, HIGH or LOW
I/On to CP
Set-up time, HIGH or LOW
CET to CP
Hold time, HIGH or LOW
CET to CP
Set-up time, HIGH or LOW
Sn to CP
Hold time, HIGH or LOW
Sn to CP
Clock Pulse Width
74F
TA = +25°C
VCC = +5.0 V
CL = 50 pF
Min Typ Max
125
4.5
10.5
5.5
10.5
4.5
9.0
4.5
9.0
3.0
6.5
3.0
7.5
2.5
7.0
4.5
9.0
1.0
6.5
1.0
7.0
74F
TA = 0°C to +70°C
VCC = +5.0 V ±10%
CL = 50 pF
Min
Max
80
4.5
11
5.5
11
4.5
10
4.5
10
2.5
7.5
2.5
8.0
2.5
8.0
4.5
9.5
1.0
8.0
1.0
8.0
Unit
MHz
ns
ns
ns
ns
ns
74F
74F
TA = +25°C
VCC = +5.0 V
CL = 50 pF
TA = 0°C to +70°C
VCC = +5.0 V ±10%
CL = 50 pF
Min
Typ Max Min
Typ Max
Unit
5.0
5.0
5.0
5.0
ns
1.0
2.0
1.0
2.0
ns
5.0
5.0
5.5
6.0
ns
0
0
0
0
ns
8.0
8.5
8.0
8.5
ns
0
0
0
0
ns
4.0
4.0
4.0
4.0
ns
FAST AND LS TTL DATA
4-254
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