DS90C383A Datasheet, PDF (1/11 Pages) National Semiconductor (TI) – +3.3V Programmable LVDS Transmitter 24-Bit Flat Panel Display (FPD) Link-65 MHz, +3.3V LVDS Transmitter 24-Bit Flat Panel Display (FPD) Link-65 MHz

July 1998
DS90C383A/DS90CF383A
+3.3V Programmable LVDS Transmitter 24-Bit Flat Panel
Display (FPD) Link-65 MHz
+3.3V LVDS Transmitter 24-Bit Flat Panel Display (FPD)
Link-65 MHz
1.0 General Description
The DS90C383A/DS90CF383A transmitter converts 28 bits
of CMOS/TTL data into four LVDS (Low Voltage Differential
Signaling) data streams. A phase-locked transmit clock is
transmitted in parallel with the data streams over a fifth
LVDS link. Every cycle of the transmit clock 28 bits of input
data are sampled and transmitted. At a transmit clock fre-
quency of 65 MHz, 24 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 227 Mbytes/
sec. The DS90C383A transmitter can be programmed for
Rising edge strobe or Falling edge strobe through a dedi-
cated pin. The DS90CF383A 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 (DS90CF384) without any translation logic.
This chipset is an ideal means to solve EMI and cable size
problems associated with wide, high speed TTL interfaces.
2.0 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 1.8 Gbps throughput
n Up to 227 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 56-lead TSSOP package
n Improved replacement for:
SN75LVDS83 — DS90C383A
SN75LVDS81 — DS90CF383A
3.0 Block Diagrams
DS90C383A/DS90CF383A
DS100100-1
Order Number DS90C383AMTD or DS90CF383AMTD
See NS Package Number MTD56
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