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9ZX21901C Datasheet(PDF) 9 Page - Integrated Device Technology

Part # 9ZX21901C
Description  19-Output Differential Zbuffer for PCIe Gen2/3 and QPI
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

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IDT®
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI
1648H- 12/08/11
9ZX21901C
19-Output Differential Zbuffer for PCIe Gen2/3 and QPI
9
Clock Periods - Differential Outputs with Spread Spectrum Disabled
1 Clock
1us
0.1s
0.1s
0.1s
1us
1 Clock
-c2c jitter
AbsPer
Min
-SSC
Short-Term
Average
Min
- ppm
Long-Term
Average
Min
0 ppm
Period
Nominal
+ ppm
Long-Term
Average
Max
+SSC
Short-Term
Average
Max
+c2c jitter
AbsPer
Max
100.00
9.94900
9.99900
10.00000
10.00100
10.05100
ns
1,2,3
133.33
7.44925
7.49925
7.50000
7.50075
7.55075
ns
1,2,4
Clock Periods - Differential Outputs with Spread Spectrum Enabled
1 Clock
1us
0.1s
0.1s
0.1s
1us
1 Clock
-c2c jitter
AbsPer
Min
-SSC
Short-Term
Average
Min
- ppm
Long-Term
Average
Min
0 ppm
Period
Nominal
+ ppm
Long-Term
Average
Max
+SSC
Short-Term
Average
Max
+c2c jitter
AbsPer
Max
99.75
9.94906
9.99906
10.02406
10.02506
10.02607
10.05107
10.10107
ns
1,2,3
133.00
7.44930
7.49930
7.51805
7.51880
7.51955
7.53830
7.58830
ns
1,2,4
Notes:
1Guaranteed by design and characterization, not 100% tested in production.
3 Driven by SRC output of main clock, 100 MHz PLL Mode or Bypass mode
4 Driven by CPU output of main clock, 133 MHz PLL Mode or Bypass mode
Measurement Window
Units
SSC ON
Center
Freq.
MHz
SSC OFF
Center
Freq.
MHz
2 All Long Term Accuracy specifications are guaranteed with the assumption that the input clock complies with CK420BQ/CK410B+
accuracy requirements (+/-100ppm). The 9ZX21901 itself does not contribute to ppm error.
DIF
DIF
Measurement Window
Units Notes
Notes
Differential Output Termination Table
DIF Zo (Ω)Iref (Ω)Rs (Ω)Rp (Ω)
100
475
33
50
85
412
27
43.2
Differential Zo
Rp
Rp
HCSL Output
Buffer
9ZX21901 Differential Test Loads
Rs
Rs
2pF
2pF
10 inches
Thermal Characteristics
Parameter
Symbol Conditions
Min. Typ. Max. Units
θJA
Still air
26.2
°C/W
θJA
1 m/s air flow
23.1
°C/W
θJA
3 m/s air flow
19.6
°C/W
Thermal Resistance Junction to Case
θJC
10.4
°C/W
Thermal Resistance Junction to Board
θJB
0.3
°C/W
Thermal Resistance Junction to Ambient


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