FTT-10A Datasheet, PDF (1/3 Pages) List of Unclassifed Manufacturers – FTT-10A Free Topology Twisted Pair Transceiver Model 50051

FTT-10A Free Topology
®
Twisted Pair Transceiver
Model 50051
Features
• Complete LonWorks® transformer-isolated, free topology
communication transceiver
• Replacement for the FTT-10 transceiver1
• Compatible with the FTT-10 Free Topology Transceiver and LPT-10 Link Power
Transceiver;
• Differential Manchester coded signaling for polarity insensitive network wiring
• 78 kilobits per second bit rate up to distances of 500 meters (free topology),
or 2700 meters (doubly terminated bus) worst case
• Supports free topology star, bus, and loop wiring
• Automatic clock detection at 5, 10, or 20MHz
• Designed to comply with FCC and EN55022 Level B EMI requirements
• UL, CSA, TÜV Recognized component
• LonMark® certifiable for interoperability
Description
The FTT-10A Free Topology Twisted Pair Transceiver provides a simple, cost-effective
method of adding a LonWorks transceiver to any Neuron® Chip-based control system. A
replacement for the popular FTT-10 transceiver1, the FTT-10A transceiver supports polarity
insensitive, free topology wiring, freeing the system installer from the need to wire using a
bus topology. Star, bus, and loop wiring are all supported by this architecture. Free topology
wiring reduces the time and expense of system installation by allowing the wiring to be
installed in the most expeditious manner. It also simplifies network expansion by eliminating
restrictions on wire routing, splicing, and node placement.
The FTT-10A transceiver consists of an isolation transformer that is integrated with a 78kbps
differential Manchester coded communication transceiver. Pins are provided for connection
to the Neuron Chip Communications Port (CP) and clock lines, +5V power, and the twisted
pair network. The pins are keyed to prevent accidental reversal during mounting. The FTT-
10A transceiver provides automatic detection of the input clock frequency at 5, 10,
and 20MHz.
The transceiver is housed in an encapsulated plastic shell which contains the transformer
and signal processing electronics. The compact package is only 7.2mm (0.28 inches) high
and is ideal for use in very low profile applications such as DIN packs. The sealed housing
protects the transceiver should conformal coating or other forms of environmental sealing
be required on the printed circuit assembly.
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