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74F579 Datasheet, PDF (9/14 Pages) NXP Semiconductors – 8-bit bidirectional binary counter 3-State
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Philips Semiconductors
8-bit bidirectional binary counter (3-State)
Product specification
74F579
AC WAVEFORMS
NOTE: For all waveforms VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
CP
I/On
TC
1/fMAX
VM
tW(H)
tPLH
VM
tPHL
tW(L)
VM
VM
tPHL
VM
tPLH
VM
MR
CP
I/On
VM
tW(L)
tPHL
VM
VM
trec
VM
SF01089
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width and Maximum Clock Frequency
SF01090
Waveform 2. Master Reset Pulse Width, Master Reset to
Output Delay and Master Reset to Clock Recovery Time
CET
TC
VM
tPHL
VM
VM
tPLH
VM
SF01091
Waveform 3. Propagation Delay, CET Input to
Terminal Count Output
MR, U/D
TC
VM
tPHL
VM
VM
tPLH
SF01092
Waveform 4. Propagation Delay, U/D and MR Inputs to
Terminal Count Output
PE, CS,
U/D, SR,
I/On, CEP,
CET
VM
VM
ts(H)
th(L)
VM VM
ts(L)
th(L)
CP
VM
VM
Waveform 5. Setup and Hold Times
SF01093
PE, OE,
CS
I/On
VM
tPZH
VM
tPHZ
VM
VOH -0.3V
SF01094
Waveform 6. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
PE, OE,
CS
I/On
VM
tPZL
VM
tPLZ
VM
VOL +0.3V
SF01095
Waveform 7. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
1992 May 04
9
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