( File format: PDF, 1045 Kbytes )
5-35MHz DC- Balanced 24-Bit LVDS Deserializer
National Semiconductor
Description
The DS90C241/DS90C124 Chipset translates a 24-bit parallel bus into a fully transparent data/control LVDS serial stream with embedded clock information. This single serial stream simplifies transferring a 24-bit bus over PCB traces and cable by eliminating the skew problems between parallel data and clock paths. It saves system cost by narrowing data paths that in turn reduce PCB layers, cable width, and connector size and pins. The DS90C241/DS90C124 incorporates LVDS signaling on the high-speed I/O. LVDS provides a low power and low noise environment for reliably transferring data over a serial transmission path. By optimizing the serializer output edge rate for the operating frequency range EMI is further reduced. In addition the device features pre-emphasis to boost signals over longer distances using lossy cables. Internal DC balanced encoding/decoding is used to support AC-Coupled interconnects.
Features
• 5 MHz–35 MHz clock embedded and DC-Balancing 24:1 and 1:24 data transmissions
• User defined Pre-Emphasis driving ability through external resistor on LVDS outputs and capable to drive up to 10 meters shielded twisted-pair cable
• User selectable clock edge for parallel data on both Transmitter and Receiver
• Internal DC Balancing encode/decode – Supports AC-coupling interface with no external coding required
• Individual power-down controls for both Transmitter and Receiver
• Embedded clock CDR (clock and data recovery) on Receiver and no external source of reference clock needed
• All codes RDL (random data lock) to support live-pluggable applications
• LOCK output flag to ensure data integrity at Receiver side
• Balanced TSETUP/THOLD between RCLK and RDATA on Receiver side
• PTO (progressive turn-on) LVCMOS outputs to reduce EMI and minimize SSO effects
• All LVCMOS inputs and control pins have internal pulldown
• On-chip filters for PLLs on Transmitter and Receiver
• Temperature range –40°C to +105°C
• Greater than 8 kV HBM ESD tolerant
• Meets AEC-Q100 compliance
• Power supply range 3.3V ± 10%
• 48-pin TQFP package
As the hyperlinked contents/websites are those of third parties, we cannot vouch for their accuracy or legitimacy.
Hot Articles
Most Popular Articles
Search EE Times India
Max's Cool Beans
Strange modes of transport and other "stuff"
Someone just pointed me at a YouTube video that claims to show the world's first e-powered multicopter flight...
