2 Ch. Universal Differential Receiver, RS422 Outputs


$ 718.75


  • Differential LVDS, RS422, LVPECL, NECL, PECL or TTL to RS422 Logic Level Translation
  • Differential line driver/receiver
  • Essential Lab Tools for interfacing with High Speed Data Communications Equipment


  • 500 MHz Maximum Toggle Rate
  • Floating 100 Ω Universal Differential Inputs Accept LVDS, LVPECL, NECL, PECL, RS422 or TTL Inputs
  • Differential 124 Ω RS-422 Outputs
  • Ready-to-Use 1.3 x 2.9 x 3.9-in. Modules include a ±8.5 V/1.8 A AC/DC Adapter


The PRL-425RS is a dual channel, universal input differential receiver with RS-422 outputs. The floating 100 Ω inputs are designed for interfacing with differential signals within the common mode range of -2.4 V to +4.0 V. Therefore, they are compatible with LVDS, RS422, LVPECL, LVTTL/CMOS, NECL, PECL or TTL differential input signals. The PRL-425RS has differential RS-422 outputs for driving floating 124 Ω loads, typically the configuration used for RS-422 receivers. It is also a long line driver, designed specifically for use with high speed data communications applications. Functional block diagrams of these devices are shown in Fig. 1 and Fig. 2. Model numbers with suffix TR, such as PRL-425RSTR have Triax input connectors instead of SMA input connectors. Model PRL-425RSTR-C002 has SMA input connectors and Triax output connectors, and is available by special order.

The PRL-425RS is housed in a 1.3 x 2.9 x 3.9-in. extruded aluminum enclosure, and each is provided with a ±8.5V AC/DC Adapter. Optional mounting brackets are available.

Fig. 1, PRL-425RS Dual Ch. Universal Receiver (SMA) with RS422 Outputs
Fig. 2, PRL-425RSTR Dual Ch. Universal Receiver (Triax) with RS422 Outputs
Fig. 3, PRL-425RSTR-C002, Dual Ch. Universal Receiver (SMA) with RS422 (Triax) Outputs

(0° C ≤ TA ≤ 35° C)*

Symbol Parameter PRL-425RS UNIT Notes
Min Typ Max
RinD Differential Input Resistance 95 100 105  
RinC Common Mode Input Resistance   5K    
IDC1 DC Input Current, +8.5 V   165 200 mA  
IDC2 DC Input Current, -8.5 V   -240 -260 mA  
VDC DC Input Voltage ±7.5 ±8.5 ±12 V  
VAC AC/DC Adapter Input Voltage 103 115 127 V  
VOHNL Output Hi Level, No Load 2.75 3.0 3.3 V 124 Ω for RS422
VOHFL Output Hi Level, Full Load 1.8 2.0 2.2 V  
VOLNL Output Lo Level, No Load -1.2 -1.0 -0.8 V 124 Ω for RS422
VOLFL Output Lo Level, Full Load -0.2 0.0 0.2 V  
tPLH Propagation Delay to output ↑   2200   ps  
tPHL Propagation Delay to output ↓   2200   ps  
tr/tf Rise/Fall Times (20%-80%)   1000 1300 ps  
fMAX1 Maximum Clock Frequency SMA 500 580   MHz  
fMAX2 Maximum Clock Frequency Triax 350 450   MHz  
tSKEW1 Skew between outputs   250 500 ps  
tSKEW2 Skew from unit to unit   200 1000 ps  
VCM Input Common Mode Voltage -2.4   +4.0 V  
  Size 1.3 x 2.9 x 3.9 in.
  Weight, excluding AC adapter 7 Oz  
  Shipping weight, including AC adapter 4 lb.  


All PRL products with Triax connectors use Trompeter P/N CBBJR79, Right Angle Circuit Board Bulkhead Jack, 3-lug (Numbered page 10, document page 11 of 142). Any Trompeter 70-series Triax Cable Plug with 3 lugs (e.g. PL75-9, 3-lug) will mate with CBBJR79.