1FEATURES

2• No Special Start-up Sequence Required

between Clock/Data and /PD Pins. Input Signal

(Clock and Data) can be Applied Either Before

or After the Device is Powered.

• Support Spread Spectrum Clocking up to

100KHz Frequency Modulation & Deviations of

±2.5% Center Spread or −5% Down Spread.

• Input Clock Detection Feature will Pull all

LVDS Pairs to Logic Low when Input Clock is

Missing and when /PD Pin is Logic High.

• 18 to 68 MHz Shift Clock Support

• Best–in–Class Set & Hold Times on TxINPUTs

• Tx Power Consumption < 130 mW (typ)

@65MHz Grayscale

• 40% Less Power Dissipation than BiCMOS

Alternatives

• Tx Power-Down Mode < 37μW (typ)

• Supports VGA, SVGA, XGA and Dual Pixel

SXGA.

• Narrow Bus Reduces Cable Size and Cost

• Up to 1.3 Gbps Throughput

• Up to 170 Megabytes/sec Bandwidth

• 345 mV (typ) Swing LVDS Devices for Low EMI

• PLL Requires no External Components

• Compatible with TIA/EIA-644 LVDS Standard

• Low Profile 48-lead TSSOP Package

• Improved Replacement for:

– SN75LVDS84, DS90CF363A

DESCRIPTION

The DS90CF363B transmitter converts 21 bits of

CMOS/TTL data into three LVDS (Low Voltage

Differential Signaling) data streams. A phase-locked

transmit clock is transmitted in parallel with the data

streams over a fourth LVDS link. Every cycle of the

transmit clock 21 bits of input data are sampled and

transmitted. At a transmit clock frequency of 65 MHz,

18 bits of RGB data and 3 bits of LCD timing and

control data (FPLINE, FPFRAME, DRDY) are

transmitted at a rate of 455 Mbps per LVDS data

channel. Using a 65 MHz clock, the data throughput is 170 Mbytes/sec. The DS90CF363B is fixed as a

Falling edge strobe transmitter and will interoperate

with a Falling edge strobe Receiver (DS90CF366)

without any translation logic.

This chipset is an ideal means to solve EMI and

cable size problems associated with wide, high speed

TTL interfaces.