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CDCDB2000 датащит (Datasheet) 25 Page - Texas Instruments

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№ деталь CDCDB2000
подробность  CDCDB2000 DB2000QL-Compliant 20-Output Clock Buffer for PCIe Gen 1 to Gen 5
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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CDCDB2000
www.ti.com
SNAS787 – NOVEMBER 2019
Product Folder Links: CDCDB2000
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Copyright © 2019, Texas Instruments Incorporated
Typical Application (continued)
8.2.2.1 Output Enable Control Method
If the SMBus and OE# pins should be used for controlling output states, the SBEN pin should be tied to a low
potential. This could be selected for hot swapping where pin control by a CPLD or other hot swap controller is
needed to enable/disable the reference clock to safeguard against backdriving a connected device.
8.2.2.2 SMBus Address
An SMBus address should be selected from the listed potential addresses in Table 1. The appropriate pullup or
pulldown resistor should be placed on the SADRx pins as indicated in the table. Ensure the SMBus address is
not already in use to avoid conflict.
8.2.3 Application Curve
The graph listed in Table 16 is used as both an application curve and a typical characteristics plot (see the
Typical Characteristics section).
Table 16. Table of Graphs
TITLE
FIGURE
CDCDB2000 Clock Out (CK0:19) Phase Noise
Figure 5




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