74F378 데이터 시트보기 (PDF) - Philips Electronics
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74F378 Datasheet PDF : 10 Pages
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Philips Semiconductors
Hex D flip-flop with enable
Product specification
74F378
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
fMAX
tPLH
tPHL
Maximum clock frequency
Propagation delay
CP to Qn
TEST
CONDITION
Waveform 1
Waveform 1
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
MIN TYP MAX
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
80
100
80
3.0
5.5
7.5
3.0
8.5
3.5
6.0
8.5
3.5
9.5
UNIT
MHz
ns
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
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
Dn to CP
Hold time, High or Low
Dn to CP
Setup time, High or Low
E to CP
Hold time, High or Low
E to CP
CP Pulse width,
High or Low
TEST
CONDITION
Waveform 2
Waveform 2
Waveform 2
Waveform 2
Waveform 1
LIMITS
Tamb = +25°C
VCC = +5.0V
CL = 50pF, RL = 500Ω
MIN TYP MAX
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL= 50pF, RL = 500Ω
MIN
MAX
4.0
4.0
4.0
4.0
0
0
0
0
4.0
4.0
10.0
10.0
0
0
0
0
4.0
4.0
6.0
6.0
UNIT
ns
ns
ns
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
CP VM
1/fMAX
tw(H)
tPHL
VM
tw(L)
VM
tPLH
Qn
VM
VM
SF00919
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
Dn
VM
VM
ts
th
En
VM VM
ts(L)
th=0
CP
VM
VM
VM
ts(H)
th=0
VM
SF00920
Waveform 2. Data and Enable Setup Time and Hold Times
1989 Oct 05
5
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