74F379A 데이터 시트보기 (PDF) - Philips Electronics
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74F379A Datasheet PDF : 10 Pages
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Philips Semiconductors
Quad register
Product specification
74F379A
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
fmax
Maximum clock frequency
tPLH
Propagation delay
tPHL
CP to Qn or Qn
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
tsu (H)
tsu (L)
th (H)
th (L)
tsu (H)
tsu (L)
th (H)
th (L)
tw (H)
tw (L)
Setup time, high or low level
Dn to CP
Hold time, high or low level
Dn to CP
Setup time, high or low level
E to CP
Hold time, high or low level
E to CP
CP Pulse width,
high or low
TEST
CONDITION
Waveform 1
Waveform 1
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
175 200
155
2.0
3.5
6.5
2.0
7.0
4.0
5.5
8.0
3.5
8.5
UNIT
MHz
ns
TEST
CONDITION
Waveform 2
Waveform 2
Waveform 2
Waveform 2
Waveform 1
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
3.0
3.5
3.0
3.5
0
0
0
0
4.0
4.5
3.5
4.0
0
0
0
0
3.5
3.5
4.5
4.5
UNIT
ns
ns
ns
ns
ns
AC WAVEFORMS
CP VM
1/fmax
tw(H)
tPHL
VM
tw(L)
VM
tPLH
Qn, Qn
VM
VM
SF00358
Waveform 1. Propagation delay for clock input to output,
clock pulse widths, and maximum clock frequency
Notes to AC waveforms
1. For all waveforms, VM = 1.5V.
2. The shaded areas indicate when the input is permitted to change
for predictable output performance.
En, Dn
VM
VM
tsu(H) th(H)
VM
tsu(L)
VM
th(L)
CP
VM
VM
SF00296
Waveform 2. Data and enable setup time and hold times
1996 Mar 12
5
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