Dual-Channel RS-422-to-LVDS Level Translator

Applications:

• Converting RS-422 Signals to LVDS Signals
• High Speed Digital Communications systems Testing
• High Speed SONET Clock Level Translation

Features:

• f_max > 500 MHz
• 1.1 ns Typical Output Rise & Fall Times
• Floating 124 Ω RS-422 Inputs
• Differential 50 Ω LVDS Outputs
• SMA or Triax I/O Connectors
• Two channels for CLK/DATA translation
• Self-contained 1.3 x 2.9 x 3.9-in. unit includes ±8.5 V/1.4 A AC/DC Adapter

Description

The PRL-426RS is an RS-422-to-LVDS Logic Level Translator. 

The inputs of the PRL-422RS consist of two pairs of SMA connectors, each internally terminated with 124 Ω between the two signal pins. The SMA shields are tied to chassis ground. They are designed to interface with the 124 Ω differential Serial Data/Data or Clock/Clock outputs from data communications equipment. Model PRL-426RSTRI has Triax input connectors and SMA output connectors. Model PRL-426RSTR has SMA input connectors and Triax output connectors, and is available by special order.

The differential outputs are 50 Ω back-terminated and are designed for driving floating 100 Ω loads, normally the configuration used in LVDS input circuits. The output swing is typically 600 mV with a common mode voltage of 1.2 V. These high speed translators facilitate testing of high speed digital communications circuits where conversion of RS-422 clock and data signals to LVDS signals is often required.

Each unit is supplied with a ±8.5 V/1.8 A AC/DC Adaptor and housed in a 1.3 x 2.9 x 3.9-in. extruded aluminum enclosure. Available accessories include voltage distribution modules and brackets for mounting multiple units.