N74F259D Просмотр технического описания (PDF) - Philips Electronics
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N74F259D Datasheet PDF : 12 Pages
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Philips Semiconductors
Latch
Product specification
74F259
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
tPLH
Propagation delay
tPHL
D to Qn
tPLH
Propagation delay
tPHL
E to Qn
tPLH
Propagation delay
tPHL
An to Qn
tPHL
Propagation delay
MR to Qn
TEST
CONDITION
Waveform
NO TAG
Waveform
NO TAG
Waveform
NO TAG
Waveform
NO TAG
LIMITS
Tamb = +25°C
VCC = +5V
CL = 50pF, RL = 500Ω
Tamb = 0°C to +70°C
VCC = +5V ± 10%
CL = 50pF, RL = 500Ω
MIN TYP MAX
MIN
MAX
4.0
7.0
9.0
4.0
10.0
3.0
5.0
7.0
2.5
7.5
4.5 8.0 10.5
4.5
12.0
3.0
5.0
7.0
3.0
8.0
5.0 10.0 14.0
5.0
14.5
4.0
8.5
9.5
4.0
10.0
5.0
7.0
9.0
4.5
10.0
UNIT
ns
ns
ns
ns
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
TEST
CONDITION
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL= 50pF, RL = 500Ω
MIN TYP MAX
MIN
MAX
UNIT
ts(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
th(H)
th(L)
tw(L)
Setup time, High or Low
D to E
Hold time, High or Low
D to E
Setup time, High or Low
An to E1
Hold time, High or Low
An to E2
E Pulse width, Low
Waveform
3.0
NO TAG
6.5
Waveform
0
NO TAG
0
Waveform
2.0
NO TAG
2.0
Waveform
0
NO TAG
0
Waveform
7.5
NO TAG
3.0
ns
7.0
0
ns
0
2.0
ns
2.0
0
ns
0
8.0
ns
tw(L) MR Pulse width, Low
Waveform
3.0
NO TAG
3.0
ns
NOTES:
1. The Address to Enable setup time is the time before the High-to-Low Enable transition that the Address must be stable so that the correct
latch is addressed and the other latches are not affected.
2. The Address to Enable hold time is the time before the Low-to-High Enable transition that the Address must be stable so that the correct
latch is addressed and the other latches are not affected.
1989 Apr 11
6
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