DS90C363A/DS90CF363A +3.3V Programmable LVDS Transmitter 18-Bit Flat Panel Display (FPD)
Link-65 MHz, +3.3V LVDS Transmitter 18-Bit Flat Panel Display (FPD)Link-65 MHz
June 1998
DS90C363A/DS90CF363A
+3.3V Programmable LVDS Transmitter 18-Bit Flat Panel
Display (FPD) Link-65 MHz
+3.3V LVDS Transmitter 18-Bit Flat Panel Display (FPD)
Link-65 MHz
General Description
The DS90C363A/DS90CF363A 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 fre-
quency 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 DS90C363A transmitter can be programmed for
Rising edge strobe or Falling edge strobe through a dedi-
cated pin. The DS90CF363A is fixed as a Falling edge
strobe transmitter. A Rising edge or Falling edge strobe
transmitter will interoperate with a Falling edge strobe Re-
ceiver (DS90CF364) without any translation logic.
This chipset is an ideal means to solve EMI and cable size
problems associated with wide, high speed TTL interfaces.
Features
n
20 to 65 MHz shift clock support
n
Rejects
>
±
3ns Jitter from VGA chip with less than
225ps output Jitter
@
65MHz (TJCC)
n
Best–in–Class Set & Hold Times on TxINPUTs
n
Tx power consumption
<
130 mW (typ)
@
65MHz
Grayscale
n
>
50% Less Power Dissipation than BiCMOS
Alternatives
n
Tx Power-down mode
<
200µW (max)
n
ESD rating
>
7 kV (HBM),
>
500V (EIAJ)
n
Supports VGA, SVGA, XGA and Dual Pixel SXGA.
n
Narrow bus reduces cable size and cost
n
Up to 1.3 Gbps throughput
n
Up to 170 Megabytes/sec bandwidth
n
345 mV (typ) swing LVDS devices for low EMI
n
PLL requires no external components
n
Compatible with TIA/EIA-644 LVDS standard
n
Low profile 48-lead TSSOP package
n
Improved replacement for:
SN75LVDS85 — DS90C363A
SN75LVDS84 — DS90CF363A
Block Diagrams
DS90C363A/DS90CF363A
DS100138-1
Order Number DS90C363AMTD or DS90CF363AMTD
See NS Package Number MTD48
TRI-STATE
®
is a registered trademark of National Semiconductor Corporation.
© 1998 National Semiconductor Corporation
DS100138
www.national.com
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