74F569 Просмотр технического описания (PDF) - Philips Electronics
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74F569 Datasheet PDF : 14 Pages
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Philips Semiconductors
4-bit bidirectional binary synchronous counter (3-State)
Product specification
74F569
AC WAVEFORMS (Continued)
For all waveforms, VM = 1.5V
The shaded areas indicate when the input is permitted to change for predictable output performance.
CET, SR, PE
VM
VM
tPHL
tPLH
TC, CC
VM
VM
SF01065
Waveform 3. Propagation Delays CET to TC
and SR or PE to CC
U/D
VM
VM
tPHL
tPLH
TC, CC
VM
VM
SF01066
Waveform 4. Propagation Delays U/D to TC and CC
tW(L)
MR
tREC
CP
VM
tPHL
Qn
VM
SF01067
Waveform 5. Master Reset Pulse Width, Master Reset to
Output Delay and Master Reset to Clock Recovery Time
Dn
VM
DATA
STABLE
VM
ts
th
PE
VM VM
VM
VM
ts(L)
th = 0
ts(H)
th = 0
CP
VM
VM
SF01068
Waveform 6. Parallel Data and Parallel Enable Setup
and Hold Times
CET
CEP
CP
VM
VM
ts(L)
VM
th(L)
VM VM
ts(H)
th(H)
VM
U/D
CP
VM
VM
ts(L)
th(L)
VM
VM
VM
ts(H)
th(H)
VM
Qn
NO CHANGE
VM
COUNT
VM
NO
CHANGE
SF01069
Waveform 7. Count Enable Data Setup and Hold Times
Qn
COUNT UP
COUNT DOWN
SF01070
Waveform 8. Up/Down Control Setup and Hold Times
SR
VM VM
ts(H) th(H)
VM
VM
ts(L) th(L)
CP
VM
VM
SF01071
Waveform 9. Synchronous Reset Setup and Hold Times
OE
VM
VM
tPZH
tPHZ
VOH -0.3V
Qn
VM
0V
SF01084
Waveform 10. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
1996 Jan 05
9
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