4:28 Data Channel Compression at up to

238 MBytes/s Throughput

Suited for SVGA, XGA, or SXGA Display

Data Transmission From Controller to

Display With Very Low EMI

28 Data Channels and Clock-In Low-Voltage

TTL

4 Data Channels and Clock-Out

Low-Voltage Differential

Operates From a Single 3.3-V Supply With

250 mW (Typ)

ESD Protection Exceeds 6 kV

5-V Tolerant Data Inputs

Selectable Rising or Falling Edge-Triggered

Inputs

Packaged in Thin Shrink Small-Outline

Package With 20-Mil Terminal Pitch

Consumes Less Than 1 mW When Disabled

Wide Phase-Lock Input Frequency

Range . . . 31 MHz to 68 MHz

No External Components Required for PLL

Outputs Meet or Exceed the Requirements

of ANSI EIA/TIA-644 Standard

Improved Replacement for the DS90C581

description

The SN75LVDS83 FlatLink transmitter contains

four 7-bit parallel-load serial-out shift registers, a

7× clock synthesizer, and five low-voltage

differential-signaling (LVDS) line drivers in a single integrated circuit. These functions allow 28 bits of

single-ended low-voltage TTL (LVTTL) data to be synchronously transmitted over five balanced-pair conductors

for receipt by a compatible receiver, such as the SN75LVDS82. The SN75LVDS83 can also be used in 21-bit

links with the SN75LVDS86 receiver.

When transmitting, data bits D0 through D27 are each loaded into registers upon the edge of the input clock

signal (CLKIN). The rising or falling edge of the clock can be selected by way of the clock select (CLKSEL)

terminal. The frequency of CLKIN is multiplied seven times (7×) and then used to unload the data registers in

7-bit slices and serially. The four serial streams and a phase-locked clock (CLKOUT) are then output to LVDS

output drivers. The frequency of CLKOUT is the same as the input clock, CLKIN.

The SN75LVDS83 requires no external components and little or no control. The data bus appears the same

at the input to the transmitter and output of the receiver with the data transmission transparent to the user. The

only user intervention is the possible use of the shutdown/clear (SHTDN) active-low input to inhibit the clock

and shut off the LVDS output drivers for lower power consumption. A low-level signal on SHTDN clears all

internal registers to a low level.

The SN75LVDS83 is characterized for operation over free-air temperature ranges of 0C to 70C.