The PRL-414RSTR is a 1:4 fanout differential RS-422 line driver. It has two sets of floating 124 Ω differential inputs designed to accept RS-422 signals. The PRL-414RSTR high speed fanout line driver facilitates testing and integration of high speed digital communications circuits and distribution of satellite signals.
The PRL-414RSTR has two fanout modes, selectable by a toggle switch:
The four sets of differential outputs are 62 Ω back-terminated and designed for driving floating 124 Ω loads, normally the configuration used in RS-422 input circuits. The output swing is typically 1.40 V with a common mode voltage of 1.55 V. .
Because every output is independently buffered, unused outputs do not require termination, and outputs can even be shorted without affecting other outputs. These applications would not be possible with a passive splitter or powered distribution amplifier.
Multiple units of PRL-414RSTR can be cascaded for wider fanout, such as 1:16 or higher. The PRL-414RSTR can be combined with other PRL products and integrated into a rack-mount system using PRL's modular rackmount kit, PRL-MRK3-1.
All I/Os are Triax, using Trompeter CBBJR79 or equivalent, and will mate with any Trompeter 70-series Triax Cable Plug with 3 lugs, or compatible connector.
The PRL-414RSTR is supplied with a ±8.5 V/1.4 A AC/DC adapter and housed in a 1.3 x 2.9 x 6.0-in. extruded aluminum enclosure. Available accessories include voltage distribution modules and shielded twisted pair cables with Triax termination:
A related version with TTL/BNC inputs is also available, the PRL-414TRSBTR.
(0° C ≤ TA ≤ 35° C)*
|RIN||Differential Input Resistance||124||Ω|
|RINC||Common Mode Input Resistance||5k||Ω|
|ROUT||Differential Output Resistance||124||Ω|
|VIN||Input Voltage Range||-7||+12||V||Manufacturer’s specification;
not tested at PRL
|VOL||Output Low Level||0.85||V|
|VOH||Output High Level||2.25||V|
|VOPP||Voltage Output, peak-to-peak||1.4||V|
|VCMO||Output Common Mode Voltage1||1.55||V|
|IDC1||DC Input Current||430||mA||F = 25 MHz|
|IDC2||DC Input Current||500||mA||F = 50 MHz|
|IDC3||DC Input Current||575||625||mA||F = 70 MHz|
|VDC||DC Input Voltage||+7.5||+8.5||+12.0||V|
|VAC1||AC/DC Adapter Input Voltage, 120 V||103||115||127||V|
|VAC2||AC/DC Adapter Input Voltage, 220 V||206||220||254||V|
|tPLH||Propagation Delay to output ↑||20||ns|
|tPHL||Propagation Delay to output ↓||20||ns|
|tr/tf||Rise/Fall Times (10%-90%)2||2.8||3.5||ns|
|tSKEW1||Differential Skew between Q and Q||800||1250||ps|
|tSKEW2||Skew between any 2 outputs||1000||1500||ps|
|fmax||Max Clock Frequency3||70||75||MHz|
|Size||1.3 x 2.9 x 6.0||in.|
|Weight||9||Oz||w/o AC adapter|
|Shipping Weight||4||lb||w/AC adapter|