FEATURES

• 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 and 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) at

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, DS90C363A

DESCRIPTION

The DS90C363B 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 DS90C363B transmitter can

be programmed for Rising edge strobe or Falling

edge strobe through a dedicated pin. A Rising edge

or Falling edge strobe transmitter 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.