MPC9449 datasheet(5/11 Pages) IDT

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MPC9449 REVISION 6 DECEMBER 21, 2012

MPC9449 Data Sheet

3.3V/2.5V 1:15 PECL/LVCMOS CLOCK FANOUT BUFFER

Table 7. DC Characteristics (VCC = 2.5 V ± 5%, TA = –40C to 85°C)

Symbol

Characteristics

Min

Typ

Max

Unit

Condition

VIH

Input High Voltage

1.7

VCC  0.3

LVCMOS

VIL

Input Low Voltage

–0.3

0.7

LVCMOS

VPP

Peak-to-Peak Input Voltage

PCLK, PCLK

250

LVPECL

VCMR(1)

1. 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.

Common Mode Range

PCLK, PCLK

1.0

VCC–0.6

LVPECL

VOH

Output High Voltage

1.8

IOH = –15 mA(2)

2. 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.

VOL

Output Low Voltage

0.6

IOL = 15 mA

ZOUT

Output Impedance

17–20



IIN

Input Current(3)

3. Inputs have pull-down or pull-up resistors affecting the input current.

200

AVIN = VCC or GND

ICC

Maximum Quiescent Supply Current

All VCC Pins

Table 8. AC Characteristics (VCC = 2.5 V ± 5%, TA = -40C to 85°C)(1)

1. AC characteristics apply for parallel output termination of 50

 to VTT.

Symbol

Characteristics

Min

Typ

Max

Unit

Condition

VPP

Peak-to-Peak Input Voltage

PCLK, PCLK

400

1000

LVPECL

VCMR(2)

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.

Common Mode Range

PCLK, PCLK

1.2

VCC–0.6

LVPECL

fmax

Output Frequency

200

MHz

fref

Input Frequency

200

MHz

tP, REF

Reference Input Pulse Width

1.5

tr, tf

CCLK Input Rise/Fall Time

1.0

0.7 to 1.7 V

tsk(O)

Output-to-Output Skew

Qa outputs

Qb outputs

Qc outputs

Qd outputs

Same Frequency

All outputs

Different Frequencies

All outputs

100

200

300

tsk(PP)

Device-to-Device Skew

5.0

tSK(P)

Output Pulse Skew

350

DCREF = 50%

tPLH, HL

Propagation Delay

CCLK0 or CCLK1 to any Q

PCLK to any Q

1.0

3.5

7.0

tPLZ, HZ

Output Disable Time

OE to any Q

tPZL, LZ

Output Enable Time

OE to any Q

tr, tf

Output Rise/Fall Time(3)

3. An input rise/fall time greater than that specified may be used, but AC characteristics are not guaranteed under such a condition.

0.1

1.0

0.6 to 1.8 V

tJIT(CC)

Cycle-to-Cycle Jitter

RMS (1

)TBD

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