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| 74ABT2952 Datasheet, PDF (6/12 Pages) NXP Semiconductors – Octal registered transceiver 3-State | |||
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Philips Semiconductors
Octal registered transceiver (3-State)
Product specification
74ABT2952
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
tS(H)
ts(L)
th(H)
th(L)
ts(H)
ts(L)
th(H)
th(L)
tw(H)
tw(L)
Setup time
An to CPAB or Bn to CPBA
Hold time
An to CPAB or Bn to CPBA
Setup time
CEAB to CPAB, CEBA to CPBA
Hold time
CEAB to CPAB, CEBA to CPBA
CPAB or CPBA pulse width,
High or Low
WAVEFORM
2
2
2
2
1
LIMITS
Tamb = +25°C
VCC = +5.0V
Min
Typ
Tamb = â40°C to +85°C
VCC = +5.0V ±0.5V
Min
4.5
2.2
4.5
3.5
1.6
3.5
0.0
â0.8
0.0
0.0
â1.4
0.0
4.0
0.8
4.0
3.0
0.8
3.0
0.0
â0.7
0.0
0.0
â0.7
0.0
3.0
0.8
3.0
3.5
0.9
3.5
UNIT
ns
ns
ns
ns
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
CPBA or
CPAB
An or Bn
1/fMAX
VM
VM
tw(H)
tPHL
tw(L)
VM
VM
tPLH
VM
SA00087
Waveform 1. Propagation Delay, Clock Input to Output, Clock
Pulse Width, and Maximum Clock Frequency
OEAB,
OEBA
VM
VM
An, Bn
tPZH
VM
tPHZ
VOH
VOH â0.3V
0V
SA00119
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
ÃÃÃ An, Bn
CEAB,
ÃÃÃÃÃÃ CEBA
VM
ts(H)
CPAB,
CPBA
ÃÃÃÃÃÃÃÃÃ VM
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ th(H)
VM
ts(L)
VM
th(L)
VM
VM
Waveform 2. Data Setup and Hold Times
SA00118
TEST CIRCUIT AND WAVEFORMS
OEAB,
OEBA
VM
tPZL
VM
tPLZ
An, Bn
VM
VOL +0.3V
VOL
SA00120
Waveform 4. 3âState Output Enable Time to Low Level and
Output Disable Time from Low Level
1998 Feb 11
6
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