Advertisement

Article

Serialize 27 lines into a single, twisted-pair wire

Sunnyvale, Calif. — The latest members of Maxim Integrated Products Inc.'s high-speed LVDS
serdes family, can serialize 27 lines into a single DC-balanced twisted pair or
differential line for improved EMI and low-cost routing.

DC-balancing reduces the effects of low-frequency ground fluctuations, while the
serial low-voltage differential signaling (LVD)S link reduces the number of wires or traces from 28 to 2,
saving cost and dramatically reducing electromagnetic interference (EMI), the company said. The LVDS inputs and
outputs meet the requirements of the ANSI TIA/EIA 644 LVDS standard.

The MAX9217 (serializer) and MAX9218 (deserializer) are suited for 480 x
800 resolution LCD displays, automotive navigation and entertainment
systems, digital copiers, laser printers, network switches/routers,
and base stations.

The MAX9217 serializes 18 bits of LVTTL/LVCMOS RGB digital video
data, 9 bits of LVTTL/LVCMOS control data, and clock into a single
LVDS serial clock and data stream. The MAX9218 deserializes a single
LVDS serial input into 27 single-ended LVTTL/LVCMOS outputs. Both devices
feature DC-balanced outputs, which use AC
coupling to allow isolation between serializer and deserializer. The
DC-balanced feature reduces bit errors in the deserializer
due to shift in the common mode caused by ground shift. The maximum
aggregate payload data rate is 700 Mbits/s.

The serializer operates from a 3.3 V (±10 percent) core supply and features a
separate input supply for interfacing to 1.8 V to 3.3 V logic levels.
The deserializer features a separate output supply for interfacing to 1.8 V
to 3.3 V logic-level inputs. Both devices are specified for operation
from -40°C to +85°C. The LVDS inputs and
outputs meet the ISO 10605 specification (±30 kV air, ±10 kV contact).


Click here for full size

Link Systems with a Single Twisted-Pair Wire

The MAX9217 and MAX9218 are available in 48-pin TQFP or QFN packages.
Prices start at $6.15 for each part, $12.30 per chipset (1000-up, FOB
USA).Click here for a preliminary data sheet.

Maxim Integrated Products , 1-800-998-8800, www.maxim-ic.com.

0 comments on “Serialize 27 lines into a single, twisted-pair wire

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.