74ABT2953 查看數據表（PDF） - Philips Electronics
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74ABT2953 Datasheet PDF : 6 Pages
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Philips Semiconductors
Octal registered transceiver, inverting (3-State)
Product specification
74ABT2953
AC CHARACTERISTICS
GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω
SYMBOL
PARAMETER
WAVEFORM
fMAX
Maximum clock frequency
1
tPLH
Propagation delay
tPHL
CPBA to An, CPAB to Bn
1
tPZH
Output enable time
3
tPZL
OEBA to An, OEAB to Bn
4
tPHZ
Output disable time
3
tPLZ
OEBA to An, OEAB to Bn
4
AC SETUP REQUIREMENTS
SYMBOL
PARAMETER
WAVEFORM
tS(H)
ts(L)
Setup time
An to CPAB or Bn to CPBA
2
th(H)
th(L)
Hold time
An to CPAB or Bn to CPBA
2
ts(H)
ts(L)
Setup time
CEAB to CPAB, CEBA to CPBA
2
th(H)
th(L)
Hold time
CEAB to CPAB, CEBA to CPBA
2
tw(H)
tw(L)
CPAB or CPBA pulse width,
High or Low
1
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
LIMITS
Tamb = +25°C
VCC = +5.0V
Min
Typ
Max
Tamb = –40°C to +85°C
VCC = +5.0V ±0.5V
Min
Max
150
200
150
2.0
5.1
6.6
2.0
7.6
2.5
5.7
7.2
2.5
8.2
1.0
4.0
4.8
1.0
5.8
2.2
5.3
6.2
2.2
7.5
2.0
6.1
7.6
2.0
8.1
1.5
5.6
7.1
1.5
7.6
UNIT
MHz
ns
ns
ns
Tamb = +25°C
VCC = +5.0V
Min
Typ
4.0
2.5
3.0
1.1
0.0
–1.0
0.0
–2.0
3.5
2.0
2.5
0.9
0.0
–0.5
0.0
–1.0
3.0
2.0
3.5
1.1
LIMITS
Tamb = –40°C to +85°C
VCC = +5.0V ±0.5V
Min
4.0
3.0
0.0
0.0
3.5
2.5
0.0
0.0
3.0
3.5
UNIT
ns
ns
ns
ns
ns
ÉÉÉ An, Bn
ÉÉÉ CEAB,
VM
ÉÉÉ CEBA
ÉÉÉVM ÉÉÉÉÉÉÉÉÉÉÉÉVMÉÉÉVÉÉÉM ÉÉÉÉÉÉ
ts(H)
th(H)
ts(L)
th(L)
CPAB,
CPBA
VM
VM
SA00309
Waveform 2. Data Setup and Hold Times
OEAB,
OEBA
VM
VM
tPZH
tPHZ
An, Bn
VOH –0.3V
VM
0V
SA00310
Waveform 3. 3-State Output Enable Time to High Level and
Output Disable Time from High Level
OEAB,
OEBA
VM
tPZL
VM
tPLZ
An, Bn
VM
VOL +0.3V
0V
SA00311
Waveform 4. 3-State Output Enable Time to Low Level and
Output Disable Time from Low Level
1995 Sep 06
5
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