Ethernet Magnetics and/or connectors for Natinal Semiconductor DP83640 Precision PHYTER

Just got done reading a press release about the National Semiconductor physical layer transceiver chip, part # DP83640 (DP83640 - Precision PHYTER - IEEE 1588 Precision Time Protocol Transceiver.) A link to the datasheet for the DP83640 can be found at http://www.national.com/ds/DP/DP83640.pdf

According to the article (in the November 5, 2007 issue of Electronic Design) this chip is unique in that it has full implementation of IEEE-158 PTP (precision time protocol) standard. The IEEE-1588PTP is a technique for synchronizing the clock signals in one part of a network with clocks distributed throughout the network. One of the clocks being used as the grandmaster and all others as slaves.

That said, the DP83640 from National Semi requires specific ethernet magnetics for optimal performance. As a distributor for Bel Fuse Inc, we recommend trying one of following options from Bel Fuse. Please note that all four of these parts are equivalent to the Pulse devices approved by National Semi / NSC (Pulse H1102, H1102NL, H2019, and H2019NL)

The first two options are for ethernet only (no POE / power over ethernet features)

08B0-1X1T-36-F1: RoHS compliant, MagJack, RJ45 connector, rated for extended temperature, with LED's and 1:1 turns ration 10/100 magnetics

S558-5999-U7-F: RoHS compliant, discrete magnetic module for 10/100, single port, 1:1 tx/rx turns ratio, link to: http://arcadiansales.com/searchbypartnumber_details.php?part_number=S5585999U7F

The next three options are recommended for designs with POE.
08B0-1X1T-36-F1: RoHS compliant, MagJack, RJ45 connector, rated for extended temperature, with LED's and 1:1 turns ration 10/100 magnetics

0826-1X1T-57-F: RoHS compliant, MagJack, RJ45 connector, wtih LED's and 1:1 turns ratio 10/100 magnetics AND POE. Link to:
http://arcadiansales.com/searchbypartnumber_details.php?part_number=08261X1T57F1

0838-1X1T-W6: RoHS compliant, MagJack, RJ45 connector, wtih LED's and 1:1 turns ratio 10/100 magnetics AND POE "PLUS" (higher power POE.) Link to:
http://arcadiansales.com/searchbypartnumber_details.php?part_number=08381X1TW6

S558-5500-25-F: RoHS compliant, discrete magnetic module for 10/100 and POE, single port, 1:1 tx/rx turns ratio, link to:
http://arcadiansales.com/searchbypartnumber_details.php?part_number=S558550025F

If you have any questions at all, or would like to obtain any of these Bel Fuse devices for the
National Semiconductor DP83640 Precision PHYTER (IEEE 1588 Precision Time Protocol Transceiver) Please contact me at mikec@arcadiansales.com

Regards,
Mike Crudele