74ALS377 Просмотр технического описания (PDF) - Philips Electronics
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74ALS377 Datasheet PDF : 10 Pages
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Philips Semiconductors
Octal D flip-flop with enable
Product specification
74ALS377
AC ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
fMAX
tPLH
tPHL
Maximum clock frequency
Propagation delay
CP to 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
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 1
Waveform 1
TEST CONDITION
Waveform 2
Waveform 2
Waveform 2
Waveform 2
Waveform 1
LIMITS
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
65
2.0
8.0
3.0
11.0
UNIT
MHz
ns
LIMITS
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
MIN
MAX
5.0
5.0
0.0
0.0
1.0
1.0
3.0
3.0
6.0
8.0
UNIT
ns
ns
ns
ns
ns
AC WAVEFORMS
For all waveforms, VM = 1.3V.
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
SF00294
Waveform 1. Propagation Delay for Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
Dn
VM
tsu
E
VM
VM
tsu(L)
CP
VM
VM
th
th = 0
VM
VM
tsu(H)
th = 0
VM
SC00076
Waveform 2. Data and Enable Setup and Hold Times
1991 Feb 08
5
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