PRL-422NECL PULSE RESEARCH LAB, PRL-422NECL Datasheet

Product Description:2-Ch.Translator,RS-422to NECL

PRL-422NECL

Manufacturer Part Number
PRL-422NECL
Description
Product Description:2-Ch.Translator,RS-422to NECL
Manufacturer
PULSE RESEARCH LAB
Datasheet

Specifications of PRL-422NECL

Rohs Compliant
NA
Lead Free Status / RoHS Status
na
APPLICATIONS
FEATURES
DESCRIPTION
The PRL-422NECL and PRL-422RS are a pair of dual channel, high speed logic level translators. They are designed specifically
for use with high speed data communications applications. The PRL-422NECL converts single ended or differential 50Ω NECL
inputs to differential 124Ω RS422 outputs. The PRL-422RS converts differential 124Ω RS422 inputs to differential 50Ω NECL
outputs. Functional block diagrams of these devices are shown in Fig. 1 and Fig. 2.
The differential inputs of the PRL-422NECL have SMA connectors. A switch selects either single-ended or differential inputs. In
the differential input mode, both inputs D and D are terminated internally into 50Ω /-2V, and, therefore, either one or both inputs can
accept AC coupled signals as well. In the single input mode, signals should be connected to the D inputs only. The D inputs are
switched internally to V
outputs of the PRL-422NECL have two triax connectors, and they are designed to interface with the 124 Ω differential Serial
Data/Data or Clock/Clock inputs of the data communications equipment. Internal pull-down resistors enable these outputs to drive
differential 75 Ω loads as well.
The inputs of the PRL-422RS consist of two triax connectors, each internally terminated with 124 Ω between the pin and the ring.
They are designed to interface with the 124 Ω differential Serial Data/Data or Clock/Clock outputs from the data communications
equipment. The complementary NECL outputs have SMA connectors. They are designed for driving 50 Ω loads terminated to -2V,
and, with internal pull-down resistors, they can be AC coupled to ground-referenced 50 Ω loads as well.
The PRL-422NECL and PRL-422RS are each housed in an attractive 1.3 x 2.9 x 3.9-in. extruded aluminum enclosure. Optional
mounting brackets are available. Each unit is supplied with a ± 8.5 V/1.4 A AC/DC Adapter.
PRL-422NECL/422RS DUAL CHANNEL NECL TO RS422 and
Essential Lab Tools for interfacing with High Speed Data
Communications Equipment
The PRL-422 NECL converts single ended or differential
50Ω SMA NECL inputs to differential 124Ω RS422
Triax outputs
The PRL-422RS converts differential 124Ω RS422Triax
Inputs to differential 50Ω SMA NECL outputs
400 MHz maximum Clock Rate
Internal Single Ended or Differential 50Ω/-2V Input
terminations for PRL-422NECL
D
Complementary 50Ω NECL Outputs for PRL-422RS
Differential 124Ω RS422 Outputs for PRL-422NECL
Ready-to-Use 1.3 x 2.9 x 3.9-in. Modules, including
±8.5 V/1.4 A AC/DC Adapters
ifferential 124Ω Input terminations for PRL-422RS
BB
, nominally -1.3V, and termination resistors R
RS422 TO NECL TRANSLATORS
T
's for the D input channels are changed to 62 Ω . The
1234 Francisco Street, Torrance, CA 90502
Tel: 310-515-5330 Fax: 310-515-0068
Email:
PRL-422RS
sales@pulseresearchlab.com
www.pulseresearchlab.com

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PRL-422NECL Summary of contents

Page 1

... R BB outputs of the PRL-422NECL have two triax connectors, and they are designed to interface with the 124 Ω differential Serial Data/Data or Clock/Clock inputs of the data communications equipment. Internal pull-down resistors enable these outputs to drive differential 75 Ω loads as well. ...

Page 2

... I/O ports can not be easily measured, the 124Ω I/O ports of these adapters are first cascaded using shielded twisted pair cables, Trompeter P/N PCGOW10PCG-36 or equivalent. Input signals are applied to the 50Ω inputs of the PRL-422NECL, and outputs of the PRL-422RS are terminated into 50Ω/-2V, using the PRL-550NQ5X, four-channel NECL Terminators, connected Ω ...

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