MPC9449(2012) 查看數據表（PDF） - Integrated Device Technology
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MPC9449 Datasheet PDF : 11 Pages
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MPC9449 Data Sheet
3.3V/2.5V 1:15 PECL/LVCMOS CLOCK FANOUT BUFFER
Table 5. DC Characteristics (VCC = 3.3 V ± 5%, TA = –40C to 85°C)
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
VIH
VIL
VOH
VPP
VCMR(2)
VOL
Input High Voltage
Input Low Voltage
Output High Voltage
Peak-to-Peak Input Voltage
Common Mode Range
Output Low Voltage
2.0
2.4
PCLK, PCLK
250
PCLK, PCLK
1.0
ZOUT
IIN
ICCQ
Output Impedance
Input Current
Maximum Quiescent Supply Current
14 – 17
VCC 0.3
0.8
VCC – 0.6
0.55
0.30
200
10
V LVCMOS
V LVCMOS
V IOH = –24 mA(1)
mV LVPECL
V LVPECL
V IOL = 24 mA
V IOL = 12 mA
A VIN = VCC or GND
mA All VCC Pins
1. The MPC9449 is capable of driving 50 transmission lines on the incident edge. Each output drives one 50 parallel terminated
transmission line to a termination voltage of VTT. Alternatively, the device drives up to two 50 series terminated transmission lines.
2. VCMR (DC) is the crosspoint of the differential input signal. Functional operation is obtained when the crosspoint is within the VCMR range
and the input swing lies within the VPP (DC) specification.
Table 6. AC Characteristics (VCC = 3.3 V ± 5%, TA = –40C to 85°C)(1)
Symbol
Characteristics
Min
Typ
Max
Unit
Condition
VPP Peak-to-Peak Input Voltage
VCMR(2) Common Mode Range
PCLK, PCLK
400
PCLK, PCLK
1.0
fmax Output Frequency
0
fref
Input Frequency
0
tP, REF Reference Input Pulse Width
1.5
tr, tf CCLK0, CCLK1 Input Rise/Fall Time
tsk(O) Output-to-Output Skew
Same Frequency
Different Frequencies
Qa outputs
Qb outputs
Qc outputs
Qd outputs
All outputs
All outputs
1000
VCC – 0.6
200
200
1.0
50
50
50
100
200
300
mV
V
MHz
MHz
ns
ns
ps
ps
ps
ps
ps
ps
LVPECL
LVPECL
0.8 to 2.0 V
tsk(PP) Device-to-Device Skew
2.5
ns
tsk(P) Output Pulse Skew
250
ps DCREF = 50%
tPLH, HL Propagation Delay CCLK0 or CCLK1 to any Q
1.0
3.0
5.0
ns
PCLK to any Q
1.0
3.0
5.0
ns
tPLZ, HZ
tPZL, LZ
tr, tf
tJIT(CC)
Output Disable Time
Output Enable Time
Output Rise/Fall Time(3)
Cycle-to-Cycle Jitter
OE to any Q
OE to any Q
0.1
RMS (1 )
TBD
11
ns
11
ns
1.0
ns 0.55 to 2.4 V
ps
1. AC characteristics apply for parallel output termination of 50 to VTT.
2. VCMR (AC) is the crosspoint of the differential input signal. Normal AC operation is obtained when the crosspoint is within the VCMR range
and the input swing lies within the VPP (AC) specification. Violation of VCMR or VPP impacts propagation delay.
3. An input rise/fall time greater than that specified may be used, but AC characteristics are not guaranteed under such a condition.
MPC9449 REVISION 6 DECEMBER 21, 2012
4
©2012 Integrated Device Technology, Inc.
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