Datasheet

DS90CF383 Pin Description—FPD Link Transmitter (Continued)

Pin Name I/O No. Description

GND I 4 Ground pins for TTL inputs.

PLL V

I 1 Power supply pin for PLL.

PLL GND I 2 Ground pins for PLL.

LVDS V

I 1 Power supply pin for LVDS outputs.

LVDS GND I 3 Ground pins for LVDS outputs.

Applications Information

The DS90CF383 and DS90CF384 are backward compatible

with the existing 5V FPD Link transmitter/receiver pair

(DS90CF583 and DS90CF584). To upgrade from a 5V to a

3.3V system the following must be addressed:

1. Change 5V power supply to 3.3V. Provide this supply to

the V

, LVDS V

and PLL V

of both the transmitter

and receiver devices. This change may enable the re-

moval of a 5V supply from the system, and power may

be supplied from an existing 3V power source.

2. The DS90CF383 transmitter input and control inputs ac-

cept 3.3V TTL/CMOS levels. They are not 5V tolerant.

Pin Diagram

DS90CF383

DS100033-23

Application

DS100033-3

DS90CF383