74F269 查看數據表（PDF） - Philips Electronics
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74F269 Datasheet PDF : 14 Pages
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Philips Semiconductors
8–bit bidirectional binary counter
Product specification
74F269
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
TEST CONDITIONS
fMAX
tPLH
tpPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
Maximum clock frequency
Propagation delay
CP to Qn (Load, PE = Low)
Propagation delay
CP to Qn (Count, PE = High)
Propagation delay
CP to TC
Propagation delay
CET to TC
Propagation delay
U/D to TC
AC SETUP REQUIREMENTS
Waveform 1
Waveform 1
Waveform 1
Waveform 1
Waveform 2
Waveform 3
SYMBOL
PARAMETER
TEST CONDITIONS
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)
th(H)
th(L)
tw(H)
tw(L)
Setup time, High or Low
Pn to CP
Hold time, High or Low
Pn to CP
Setup time, High or Low
PE to CP
Hold time, High or Low
PE 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
U/D to CP
Hold time, High or Low
U/D to CP
CP Pulse width
High or Low
Waveform 4
Waveform 4
Waveform 4
Waveform 4
Waveform 5
Waveform 5
Waveform 6
Waveform 6
Waveform 1
LIMITS
Tamb = +25°C
VCC = +5V
CL = 50pF, RL = 500Ω
MIN
TYP MAX
Tamb = 0°C to +70°C
VCC = +5V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
100
115
85
3.0
6.0
8.5
3.0
9.0
4.0
6.5
8.5
4.0
9.0
3.0
6.0
9.0
3.0
10.0
4.5
7.0
10.0
4.0
10.5
4.5
6.5
9.5
4.0
10.5
5.0
6.5
9.5
5.0
10.0
3.5
6.0
9.0
3.0
10.0
3.0
6.5
9.0
3.0
10.0
4.5
7.0
9.0
4.0
10.0
4.5
7.0
9.5
4.0
10.0
LIMITS
Tamb = +25°C
VCC = +5V
CL = 50pF, RL = 500Ω
MIN
TYP
Tamb = 0°C to +70°C
VCC = +5V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
3.5
2.5
3.5
2.5
1.0
0
1.0
1.0
5.5
5.5
6.5
6.5
0
0
0
0
6.0
5.0
8.0
6.5
0
0
0
0
8.0
6.5
6.5
6.5
0
0
0
0
4.0
4.0
4.5
5.0
UNIT
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
UNIT
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
1996 Jan 05
6
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