2 Ch. TTL to LVDS Translator

Applications:

• Converting TTL signals to LVDS
• High Speed Digital Communications systems Testing
• High Speed SONET Clock Level Translation

Features:

• f_max > 300 MHz
• 1.1 ns Typical Output Rise & Fall Times
• Switchable 1.5 V/1.0 V input threshold (TTL)
• Complementary 50 Ω LVDS Outputs
• BNC Input Connectors, SMA Output Connectors
• Triax Output Connector Option
• Two channels for CLK/DATA translation
• Self-contained 1.3 x 2.9 x 3.9-in. unit includes ±8.5 V/1.8 A AC/DC Adapter

Description

The PRL-426T is a TTL-to-LVDS Logic Level Translator. The PRL-426T input is single-ended, and a toggle switch controls the input threshold (1.5 V or 1.0 V into 50 Ω). The input connectors on the PRL-426T are BNC.

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. Models with the "TR" suffix, e.g. PRL-426TTR, have Triax output connectors instead of the SMA connectors. These high speed translators facilitate testing of high speed digital communications circuits where conversion of TTL clock and data signals to LVDS level signals is often required.

The PRL-426T is designed to interface with TTL circuits. In cases where the signal source cannot drive TTL voltages into 50 Ω, the input threshold switch can be used to lower the triggering voltage to 1.0 V.

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 for mounting multiple units.