4 Ch. Translator, TTL/BNC to Differential TTL/20FC35SN, 1U Rackmount

Applications

• Converting TTL/CMOS signals to Differential TTL Signals
• Converting TTL/CMOS Signals to RS-422 Signals
• High Speed Digital Communications system testing
• 1 PPS/IRIG-B Line Driver
• Differential Line Drivers

Features:

• f_MAX > 300 MHz
• 1.1 ns Typical t_r 
• 50 Ω TTL/CMOS Input
• 1.5 V or 1.0 V Selectable Input Threshold
• Complementary 50 Ω TTL Outputs
• BNC Inputs/20FC35SN Output Connectors
• DC-Coupled I/Os
• 1U Rackmount Chassis

Description

The PRL-4540 is an 4 channel logic level translator system with four single-ended, 50 Ohm TTL inputs on BNC connectors and four differential TTL output pairs on a mass-terminated D38999/20FC35SN connector. It is designed for translation of high-speed clock and trigger signals.

The TTL inputs have a fixed at 50 Ω impedance, but require only 1.5 V to trigger. A set of internal toggle switch can reduce this further to 1.0 V. The differential TTL outputs are designed to drive twisted pair cabling into either 100 Ω/124 Ω floating loads or 50 Ω loads to Ground. The outputs of the PRL-4540 can toggle at clock rates greater than 250 MHz, typical. All I/Os are DC coupled.

The PRL-4540 is equivalent to 2 units of the PRL-420TD, 2 Channel TTL to Differential TTL Translator, integrated into a 1U chassis with an internal, auto-switching 120 VAC/240 VAC power supply, and an internal 88001641-2-C00x breakout cable with mass-terminated output connector.

The PRL-4540 may be with ordered custom pinout on the 20FC35SN connector and/or with a custom silkscreen, which case the model would be identified as PRL-4540-C00x, where each configuration has a unique suffix, but all PRL-4540 units will have the same form factor and electrical function. Use matching breakout cable 88001642-6-C00x, 26FC35PN to 8 x SMA-M, for testing.