74ABT16646 데이터 시트보기 (PDF) - Philips Electronics
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74ABT16646 Datasheet PDF : 12 Pages
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Philips Semiconductors
16-bit bus transceiver/register (3-State)
Product specification
74ABT16646
74ABTH16646
AC CHARACTERISTICS
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω
SYMBOL
PARAMETER
WAVEFORM
fMAX
Maximum clock frequency
1
tPLH
Propagation delay
tPHL
nCPAB to nBx or nCPBA to nAx
1
tPLH
Propagation delay
tPHL
nAx to nBx or nBx to nAx
2
tPLH
Propagation delay
tPHL
nSAB to nBx or nSBA to nAx
2, 3
tPZH
tPZL
Output enable time
nOE to nAx or nBx
5, 6
tPHZ
tPLZ
Output disable time
nOE to nAx or nBx
5, 6
tPZH
tPZL
Output enable time
nDIR to nAx or nBx
5, 6
tPHZ
tPLZ
Output disable time
nDIR to nAx or nBx
5, 6
LIMITS
Tamb = +25oC
VCC = +5.0V
MIN
TYP
MAX
125
1.5
3.3
4.0
1.5
2.7
4.1
1.0
2.3
3.2
1.0
2.0
4.1
1.0
3.1
4.3
1.0
2.7
4.3
1.0
3.2
4.6
1.5
3.3
4.9
1.5
3.5
4.9
1.5
2.7
4.1
1.0
4.1
4.8
1.5
4.3
4.8
2.0
3.6
5.7
1.5
2.7
5.1
Tamb = -40 to
+85oC
VCC = +5.0V ±0.5V
MIN
MAX
125
1.5
4.9
1.5
4.7
1.0
3.9
1.0
4.6
1.0
5.0
1.0
5.0
1.0
5.5
1.5
5.7
1.5
5.4
1.5
4.5
1.0
5.4
1.5
5.6
2.0
6.7
1.5
5.9
UNIT
MHz
ns
ns
ns
ns
ns
ns
ns
AC SETUP REQUIREMENTS
GND = 0V, tR = tF = 2.5ns, CL = 50pF, RL = 500Ω
SYMBOL
PARAMETER
ts(H)
ts(L)
th(H)
th(L)
tw(H)
tw(L)
Setup time
nAx to nCPAB, nBx to nCPBA
Hold time
nAx to nCPAB, nBx to nCPBA
Pulse width, High or Low
nCPAB or nCPBA
WAVEFORM
4
4
1
LIMITS
Tamb = +25oC
VCC = +5.0V
MIN
TYP
Tamb = -40 to +85oC
VCC = +5.0V ±0.5V
MIN
2.0
1.0
2.0
1.5
0.8
1.5
1.5
0.0
1.5
1.0
–0.7
1.0
4.5
2.5
4.5
3.0
2.0
3.0
UNIT
ns
ns
ns
AC WAVEFORMS
VM = 1.5V, VIN = GND to 3.0V
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 27
8
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