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| 74F841 Datasheet, PDF (14/18 Pages) NXP Semiconductors – Bus interface latches | |||
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Philips Semiconductors
Bus interface latches
Product specification
74F841/74F842/74F843/
74F845/74F846
AC WAVEFORMS
For all waveforms, VM = 1.5V.
The shaded areas indicate when the input is permitted to change for predictable output performance.
Dn, LE
Qn
VM
VM
tPLH
tPHL
VM
VM
Dn, LE
Qn
VM
VM
tPHL
tPLH
VM
VM
SF01303
Waveform 1. Propagation Delay, Non-Inverting Path
SF01304
Waveform 2. Propagation Delay, Inverting Path
PRE,
MR
LE
tw(L)
VM
VM
tREC
VM
Qn, Qn
tPLH
VM
tPHL
Qn, Qn
VM
SF01305
Waveform 3. Master Reset and Preset Pulse Width,
Master Reset and Preset to Output Delay,
and Master Reset and Preset to Latch Enable Recovery Time
Dn
VM
VM
ts(H) th(H)
VM
VM
ts(L) th(L)
LE
VM
VM
VM
tw(H)
SF01306
Waveform 4. Data Setup and Hold Times
OEn
Qn, Qn
VM
tPZH
VM
tPHZ
VM
VOH -0.3V
0V
SF00509
Waveform 5. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
OEn
VM
VM
Qn, Qn
tPZL
tPLZ
VM
3.5V
VOL +0.3V
SF00510
Waveform 6. 3-State Output Enable Time to Low Level
and Output Disable time from Low Level
1999 Jun 23
14
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