IDT5T9010
2.5VPROGRAMMABLESKEWPLLCLOCKDRIVER TERACLOCK
INDUSTRIALTEMPERATURERANGE
ACELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
Symbol
FNOM
tRPW
Parameter
Min.
Typ.
Max
Unit
VCO Frequency Range
seeProgrammableSkewRangeandResolutionTable
Reference Clock Pulse Width HIGH or LOW
Feedback Input Pulse Width HIGH or LOW
ProgrammableSkewTimeUnit
1
1
—
—
—
—
ns
ns
tFPW
tU
seeControlSummaryTable
50
tSK(B)
Output Matched Pair Skew(1,2,4)
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
50
—
—
—
ps
ps
ps
ps
ps
ps
ps
ps
ps
tSK(O)
tSK1(ω)
tSK2(ω)
tSK1(INV)
tSK2(INV)
tSK(PR)
t(φ)
OutputSkew(Rise-Rise,Fall-Fall,Nominal)(1,3)
MultipleFrequencySkew(Rise-Rise,Fall-Fall,Nominal-Divided,Divided-Divided)(1,3,4)
MultipleFrequencySkew(Rise-Fall,Nominal-Divided,Divided-Divided)(1,3,4)
InvertingSkew(Nominal-Inverted)(1,3)
InvertingSkew(Rise-Rise,Fall-Fall,Rise-Fall,Inverted-Divided)(1,3,4)
Process Skew(1,3.5)
—
—
100
100
400
400
400
300
100
375
275
1.2
1
—
—
—
—
REF Input to FB Static Phase Offset(6)
-100
-375
-275
—
tODCV
Output Duty Cycle Variation from 50%(7)
HSTL, eHSTL, 1.8V LVTTL
2.5VLVTTL
tORISE
tOFALL
OutputRiseTime(8)
HSTL, eHSTL, 1.8V LVTTL
2.5VLVTTL
ns
ns
—
OutputFallTime(8)
HSTL, eHSTL, 1.8V LVTTL
2.5VLVTTL
—
1.2
1
—
tL
Power-upPLLLockTime(9)
PLLLockTimeAfterInputFrequencyChange(9)
PLL Lock Time After Change in REF_SEL (9,11)
PLLLockTimeAfterChangeinREF_SEL(REF1 andREF0aredifferentfrequency)(9)
PLL Lock Time After Asserting PD Pin(9)
Cycle-to-CycleOutputJitter(peak-to-peak)(10)
PeriodJitter(peak-to-peak)(10)
—
1
ms
ms
μs
ms
ms
ps
tL(ω)
—
1
tL(REFSEL1)
tL(REFSEL2)
tL(PD)
—
100
1
—
—
1
tJIT(CC)
tJIT(PER)
—
75
—
75
ps
tJIT(HP)
tJIT(DUTY)
VOX
Half Period Jitter (peak-to-peak, QFB/QFB)(10,12)
—
125
100
ps
DutyCycleJitter(peak-to-peak)
—
ps
HSTLandeHSTLDifferentialTrueandComplementaryOutputCrossingVoltageLevel,
QFB/QFB only(12)
VDDQ/2 - 150 VDDQ/2 VDDQ/2 + 150 mV
NOTES:
1. Skew is the time between the earliest and latest output transition among all outputs for which the same tU delay has been selected, and when all outputs are loaded with the
specified load.
2. tSK(B) is the skew between a pair of outputs (nQ0 and nQ1) when all outputs are selected as the same class.
3. The measurement is made at VDDQ/2.
4. There are three classes of outputs: nominal (multiple of tU delay), inverted, and divided (divide-by-2 or divide-by-4 mode).
5. tSK(PR) is the output to corresponding output skew between any two devices operating under the same conditions (VDD and VDDQ, ambient temperature, air flow, etc.).
6. t(φ) is measured with REF and FB the same type of input, the same rise and fall times. For TxS/RxS = MID or HIGH, the measurement is taken from VTHI on REF to VTHI on
FB. For TxS/RxS = LOW, the measurement is taken from the crosspoint of REF/REF to the crosspoint of FB/FB. All outputs are set to 0tU, FB input divider set to divide-by-
one, and FS = HIGH.
7. tODCV is measured with all outputs selected for 0tU.
8. Output rise and fall times are measured between 20% to 80% of the actual output voltage swing.
9. tL, tL(ω), tL(REFSEL1), tL(REFSEL2), and tL(PD) are the times that are required before the synchronization is achieved. These specifications are valid only after VDD/VDDQ is stable and
within the normal operating limits. These parameters are measured from the application of a new signal at REF or FB, or after PD is (re)asserted until t(φ) is within specified
limits.
10. The jitter parameters are measured with all outputs selected for 0tU, FB input divider is set to divide-by-one, and FS = HIGH.
11. Both REF inputs must be the same frequency, but up to ±180° out of phase.
12. For HSTL/eHSTL outputs only.
16