74ALVT16646 Ver la hoja de datos (PDF) - Philips Electronics
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74ALVT16646 Datasheet PDF : 15 Pages
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Philips Semiconductors
2.5V/3.3V 16-bit bus transceiver (3-State)
Product specification
74ALVT16646
AC CHARACTERISTICS (2.5V "0.2V RANGE)
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.
SYMBOL
PARAMETER
WAVEFORM
fMAX
Maximum clock frequency
1
tPLH
Propagation delay
tPHL
nCPAB to nBx or nCPBA to nAx
1
tPLH
Propagation delay
tPHL
nSAB to nBx or nSBA to nAx
2
tPLH
Propagation delay
2
tPHL
nAx to nBx or nBx to nAx
3
tPZH
Output enable time
5
tPZL
to High and Low level
6
tPHZ
Output disable time
5
tPLZ
from High and Low Level
6
tPZH
Output enable time
5
tPZL
nDIR to nAx or nBx
6
tPHZ
Output disable time
5
tPLZ
nDIR to nAx or nBx
6
NOTE:
1. All typical values are at VCC = 3.3V and Tamb = 25°C.
LIMITS
VCC = 2.5V "0.2V
MIN
TYP1
MAX
150
1.0
3.2
4.8
1.0
2.8
4.2
1.5
3.4
5.8
1.5
3.4
6.0
0.5
2.2
3.2
0.5
2.3
3.8
1.5
3.4
5.8
1.0
2.7
6.0
1.5
3.2
5.2
1.0
2.5
3.7
2.0
4.1
7.0
1.0
2.5
4.1
1.5
3.9
6.1
1.0
3.1
4.9
AC SETUP REQUIREMENTS (2.5V "0.2V RANGE)
GND = 0V; tR = tF = 2.5ns; CL = 50pF; RL = 500Ω; Tamb = –40°C to +85°C.
SYMBOL
PARAMETER
WAVEFORM
tS(H)
tS(L)
Setup time, High or Low
nAx to nCPAB or nBx to nCPBA
4
th(H)
th(L)
Hold time, High or Low
nAx to nCPAB or nBx or nCPBA
4
tw(H)
tw(L)
Pulse width, High or Low
nCPAB or nCPBA
1
LIMITS
VCC = 2.5V "0.2V
MIN
TYP
2.0
1.2
2.0
1.2
0.0
–1.0
0.0
–1.0
1.5
1.5
UNIT
MHz
ns
ns
ns
ns
ns
ns
ns
UNIT
ns
ns
ns
AC WAVEFORMS
VM = 1.5V at VCC w 3.0V; VM = VCC/2 at VCC v 2.7V
VX = VOL + 0.3V at VCC w 3.0V; VX = VOL + 0.15V at VCC v 2.7V
VY = VOH – 0.3V at VCC w 3.0V; VY = VOH – 0.15V at VCC v 2.7V
nCPBA or
nCPAB
1/fMAX
VM
tw(H)
tPHL
VM
tw(L)
VM
tPLH
3.0V or VCC
whichever
is less
0V
VOH
nAx or nBx
VM
VM
VOL
SH00030
Waveform 1. Propagation Delay, Clock Input to Output, Clock
Pulse Width, and Maximum Clock Frequency
nSBA or nSAB
nAx or nBx
VM
tPLH
VM
VM
tPHL
VM
3.0V or VCC
nAx or nBx
0V
VOH
nAx or nBx
VOL
SH00031
Waveform 2. Propagation Delay, nSAB to nBx or nSBA to nAx,
nAx to nBx or nBx to nAx
1998 Feb 13
11
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