Prl-444Rs, 4 Channel Ttl/Cmos To Rs422 Level Translator And Line Driver 1
PRL-444RS: Quad-Channel TTL/CMOS to RS-422 Level Translator and Line Driver

PRL-444RS: Quad-Channel TTL/CMOS to RS-422 Level Translator and Line Driver

Price range: $1,190.00 through $1,414.50

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Description

Applications:

  • TTL to RS422 Logic Level Translation
  • Conversion of Single-Ended TTL Signals to Differential Signals for Driving Long Lines
  • Mini Modular Instrument for interfacing with High Speed Data Communications Equipment

Features:

  • 40 MHz Typical Maximum Clock Rate
  • 4 Single Ended Inputs with Selectable 50 Ω or 1 kΩ Termination
  • 4 RS422 Outputs for Driving 50 Ohm Cables into 124 Ω Floating Loads
  • SMA or RJ45 I/O Connectors
  • Single Supply, +7.5 VDC to +12 VDC, operation
  • Ready-to-Use 1.3 x 2.9 x 2.9-in. or 1.3 x 2.9 x 3.9-in Module includes a ±8.5 V/1.8 A AC/DC Adapter

Description:

The PRL-444RS is a 4 Channel TTL to RS422 translator module, available with either SMA or RJ45 I/O connectors.

The input resistance of the PRL-444RS inputs can be selected to be either 50 Ω or 1 kΩ by a common toggle switch. The 1 kΩ inputs are desirable when interfacing with low power circuits.

The four pairs of complementary outputs are designed for driving floating 124 Ω loads, normally the configuration used in RS422 input circuits. The output swing is typically 1.40 V with a common mode voltage of 1.5 V.

All I/Os are DC coupled. A block diagram showing the equivalent input and output circuits of the PRL-444RS-SMA is shown in Fig. 1.

The PRL-444RS-SMA is housed in a 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure with SMA I/Os, while the The PRL-444RS-RJRJ is housed in a 1.3 x 2.9 x 3.9-in. enclosure with RJ45 I/Os. Both are supplied with a ±9.0 V/±1.7 A AC/DC Adapter. A future model is planned with SMA inputs and RJ45 outputs (PRL-444RS-SRJ), although no availability date is guaranteed at this time.

The PRL-444RS may also be ordered without the power supply as by appending “-OEM,” e.g. PRL-444RS-SMA-OEM. A maximum of four units can share the included AC/DC adapter using additional units of cable #88000102-4. If mounting is desired, a pair of the #35001420 mounting brackets can accommodate any two PRL modules of the same length.

A complementary product, the PRL-425QRT, performs the opposite conversion of 4 RS422 signals to 4 TTL signals.


Fig. 1: PRL-444RS-SMA Block Diagram
Fig. 2: PRL-444RS-RJRJ Block Diagram

PRELIMINARY SPECIFICATIONS: (0° C ≤ TA ≤ 35° C)*

SYMBOL PARAMETER Min Typ Max UNIT Comment
RIN1 Input Resistance 49.5 50.0 50.5 Ω  
RIN2 Input Resistance 990 1000 1010 V  
VIL TTL input Low Level -0.5 0.0 0.5 V  
VIH TTL input High Level 2.0 2.4 5.0 V  
VDC DC Input Voltage 7.5 8.5 12.0 V  
VAC1 AC/DC Adapter Input Voltage 103 115 254 V  
IDC1 DC Input Current @ 20 MHz 194 220 246 mA  
IDC2 DC Input Current @ 40 MHz 290 mA  
VOPP Output Differential Voltage, peak-to-peak 1.40 V  
VCMO Output Common mode voltage1 1.48 1.50 1.52 V  
tPLH Propagation Delay to output ↑ TBD ns  
tPHL Propagation Delay to output ↓ TBD ns  
tr/tf1 Rise/Fall Times (10%-90%)1 1.4 2.0 2.6 ns
fMAX Max Clock Frequency 40 44   MHz
tSKEW Skew between any 2 rising edges TBD ps  
tSKEW Skew between any 2 rising/falling edges 250 ps
DTY Duty Cycle @ 40 MHz 45/55
  Size 1.3 x 2.9 x 2.9 in.  
  Weight 5 Oz  
  Shipping Weight 4 lbs  

While we believe these models to be accurate, no representations are made as to accuracy or suitability for any application:

PRL-444RS-SMA:

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Additional information

I/O Connectors

SMA I/Os, RJ45 I/Os
Power Supply

120-220 V Auto-Switching Supply, No Power Supply
mlveda_country

intl, us

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