PRL-414C Pulse Research Lab 1:4 Fanout/1:2 Complimentary Fanout TTL/CMOS Line Driver

The Pulse Research Lab PRL-414C 1:4 Fanout/1:2 Complimentary Fanout TTL/CMOS Line Driver is a fanout 50 Ω TTL Line Driver with two selectable output modes - 1:4 fanout or a 1:2 complementary fanout. When the output mode toggle switch is switched up, the PRL-414C outputs 4 identical outputs. When the output switch is Down, the inner two outputs are inverted, producing two pairs of complementary TTL signals.

It is intended for distribution of high-speed clock and logic signals to multiple loads via long lines. The 50 Ω back-terminated outputs can drive long lines with or without 50 Ω load terminations. With 50 Ω load terminations, however, all outputs of the PRL-414C series can drive 100 ft of 50 Ω cables at clock rates greater than 80 MHz in the 1:4 fanout mode and 50 MHz in the 1:2 complementary fanout mode.

The input resistance of the PRL-414C can be selected to be either 50 Ω or 1 k by a switch. The 1 k input is desirable when interfacing with low power circuits. All I/Os are DC coupled and have BNC or SMA connectors.

The PRL-414C is an important tool for distributing a precision clock signal to a number of test stations in the lab and also for distributing the 1PPS signal in the satellite ground station. The 1:2 complementary fanout mode facilitates distribution of the 1PPS signal over long distances using CAT5 twisted pair data cables, via the PRL-RJ45-SMA adapter assembly.

The PRL-414C is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and is supplied with a ±8.5 V/±1.4 a AC/DC Adapter, but requires only a single 7.5V-12V supply to operate. A maximum of four units can share a single PRL-760B AC/DC adapter using the PRL-730 or PRL-736 voltage distribution modules, or a single 4-output PRL-760C AC Adapter. If mounting is desired, a pair of the # 35001420 mounting brackets can accommodate any two PRL modules of the same length.