74ABT646A 데이터 시트보기 (PDF) - Philips Electronics
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74ABT646A Datasheet PDF : 14 Pages
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Philips Semiconductors
Octal bus transceiver/register (3-State)
Product specification
74ABT646A
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
1/fMAX
CPBA or
CPAB
VM
VM
VM
An or Bn
tw(H)
tPHL
tw(L)
VM
tPLH
VM
SA00087
Waveform 1. Propagation Delay, Clock Input to Output,
Clock Pulse Width, and Maximum Clock Frequency
SBA or SAB
An or Bn
VM
VM
tPLH
VM
tPHL
VM
An or Bn
An or Bn
SA00088
Waveform 2. Propagation Delay, SAB to Bn or SBA to An,
An to Bn or Bn to An
SBA or SAB
An or Bn
VM
VM
tPHL
VM
tPLH
VM
SA00089
Waveform 3. Propagation Delay, SBA to An or SAB to Bn
ÉÉÉ ÉÉÉÉÉÉÉÉÉ AnorBn
VM
ÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ ts(H)
VM
th(H)
VM
VM
ts(L)
th(L)
CPBA or
tW(L)
CPAB
VM
VM
NOTE: The shaded areas indicate when the input is permitted
to change for predictable output performance.
Waveform 4. Data Setup and Hold Times
SA00090
OE, DIR
DIR
VM
tPZH
VM
tPHZ
An or Bn
VM
VOH –0.3V
0V
SA00091
Waveform 5. 3-State Output Enable Time to High Level
and Output Disable Time from High Level
OE, DIR
DIR
VM
tPZL
VM
tPLZ
An or Bn
VM
VOL +0.3V
0V
SA00092
Waveform 6. 3-State Output Enable Time to Low Level
and Output Disable Time from Low Level
1998 Feb 17
8
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