Datasheet

DS2411
11 of 12
NOISE SUPPRESSION SCHEME Figure 8
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PUP
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0V
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REH
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GL
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Case A
Case C
Case B
CRC GENERATION
To validate the registration number transmitted from the DS2411, the bus master can generate a CRC
value from the 8-bit family code and unique 48-bit serial number as it is received. If the CRC matches the
last 8 bits of the registration number, the transmission is error free.
The equivalent polynomial function of this CRC is: CRC = x
8
+ x
5
+ x
4
+ 1. For more information on
generating CRC values see Application Note 27.
CUSTOM DS2411
Customization of a portion of the unique 48-bit serial number by the customer is available. Maxim will
register and assign a specific customer ID in the 12 most significant bits of the 48-bit field. The next most
significant bits are selectable by the customer as a starting value, and the least significant bits are non-
selectable and will be automatically incremented by one. Certain quantities and conditions apply for these
custom parts. Contact your Maxim sales representative for more information.
PACKAGE INFORMATION
For the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages.
Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a
different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE OUTLINE NO.
LAND PATTERN
SOT23-3 U3+3 21-0051
90-0179
6 TSOC D6+1 21-0382
90-0321
4 Flip Chip BF411-1 21-0282
Refer to 21-0282