2 Channel TTL to RS-422 Logic Level Translator

Applications: Converting TTL/CMOS Signals to Differential 124 Ω RS422 Signals High Speed Digital Communications Systems Testing Differential Long Line Drivers Features: fmax > 250 MHz 1.2 ns Typical Output Rise & Fall Times TTL Compatible 50 Ω Input 1.5 V or 1.0 V Selectable Input Threshold Complementary 124 Ω Outputs BNC Input/SMA Output Connectors for PRL-420RS BNC Input/Triax Output Connectors for PRL-420RSTR SMA I/Os for PRL-420RS-SMA DC Coupled I/Os Self-contained 1.3 x 2.9 x 3.9-in. unit including an AC/DC Adapter Description The PRL-420RS is a dual channel line driver and level translator. It has a single-ended TTL input and differential 124 Ω RS-422 outputs. Each channel has a 50 Ω TTL/CMOS compatible input and a pair of differential 124 Ω outputs for driving long lines, in excess of 100 ft, terminated into differential 124 Ω loads. The input threshold voltage can be selected between 1.5 V and 1.0 V using a front panel switch. The 1.0 V threshold makes it