PRL-426N PULSE RESEARCH LAB, PRL-426N Datasheet

Product Description:2-Ch.Translator,NECL To LVDS

PRL-426N

Manufacturer Part Number

PRL-426N

Description

Product Description:2-Ch.Translator,NECL To LVDS

Manufacturer

PULSE RESEARCH LAB

Datasheet

1.PRL-426N.pdf (2 pages)

Specifications of PRL-426N

Rohs Compliant

Lead Free Status / RoHS Status

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APPLICATIONS

FEATURES

DESCRIPTION

The PRL-426 is a series of NECL-, PECL- or TTL-to-LVDS Logic Level Translators:

The PRL-426N/426P can receive either single-ended or differential input signals, selected by a switch. The input connectors on the

PRL-426N/426P are SMA. On the PRL-426T, the input is single-ended only, and the switch controls the input threshold (1.5 V or

1.0 V into 50 Ω). The input connectors on the PRL-426T are BNC.

The differential outputs are 50 Ω back-terminated and are designed for driving floating 100 Ω loads, normally the configuration used

in LVDS input circuits. The output swing is typically 600 mV with a common mode voltage of 1.2 V. The PRL-426NTR, PRL-

426PTR, and PRL-426TTR have Triax output connectors instead of the SMA connectors. These high speed translators facilitate

testing of high speed digital communications circuits where conversion of NECL/PECL clock and data signals to LVDS level

signals is often required.

The PRL-426N is designed to interface with -5.2 V or -3.3 V NECL circuits and the PRL-426P with +5 V PECL circuits. In the

differential input mode, both inputs D and D of the PRL-426N are terminated into 50 Ω/-2 V, and those of the PRL-426P into

50 Ω/3 V. In this mode, 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

PRL-426P, and termination resistors R

TTL circuits. In cases where the signal source cannot drive TTL voltages into 50 Ω, the input threshold switch can be used to change

the triggering voltage to 1.0 V.

Each unit is supplied with a ±8.5 V/1.4 A AC/DC Adapter and housed in a 1.3 x 2.9 x 3.9-in. extruded aluminum enclosure.

Available accessories include voltage distribution modules and brackets for mounting multiple units

•

PRL-426N DUAL CHANNEL NECL TO LVDS TRANSLATOR

•

PRL-426P DUAL CHANNEL PECL TO LVDS TRANSLATOR

PRL-426T DUAL CHANNEL TTL TO LVDS TRANSLATOR

Converting Single Ended or Differential NECL/PECL

Signals to LVDS Signals

Converting TTL Signals to LVDS

High Speed Digital Communications systems Testing

High Speed SONET Clock Level Translation

f max > 500 MHz for NECL/PECL inputs, 300 MHz for TTL

input

1.1ns Typical Output Rise & Fall Times

Single Ended or Differential 50 Ω/V

Switchable 1.5 V/1.0 V input threshold (TTL)

Complementary 50 Ω LVDS Outputs

SMA I/O Connectors for NECL/PECL; BNC Inputs for TTL

Triax Output connectors for PRL-426NTR, PRL-426PTR

and PRL-426TTR

Self-contained 1.3 x 2.9 x 3.9-in. units include ±8.5V/1.4A

AC/DC Adapters

PRL-426N converts NECL to LVDS

PRL-426P converts PECL to LVDS

PRL-426T converts TTL to LVDS.

's for the D input channels are changed to 62 Ω.The PRL-426T is designed to interface with

Inputs (NECL/PECL)

, nominally -1.3 V for the PRL-426N and 3.7 V for the

PRL-426NTR, NECL to LVDS (Triax) Translator

1234 Francisco Street, Torrance, CA 90502

Tel: 310-515-5330 Fax: 310-515-0068

Email:

sales@pulseresearchlab.com

www.pulseresearchlab.com

Related parts for PRL-426N

PRL-426N Summary of contents

Page 1

... NECL/PECL clock and data signals to LVDS level signals is often required. The PRL-426N is designed to interface with -5 -3.3 V NECL circuits and the PRL-426P with +5 V PECL circuits. In the differential input mode, both inputs D and D of the PRL-426N are terminated into 50 Ω/-2 V, and those of the PRL-426P into 50 Ω ...

Page 2

... Skew between any 2 outputs SKEW 4 f max Max Clock Frequency Size Weight Fig. 1 PRL-426NTR Block Diagram Notes: ( (Vo -Vo )/2; (2) Rise and Fall times are measured with SMA output connector units only and with ground-referenced H L CMV 50 Ω loads.; (3) Skew is measured at the output of a PRL-425N when driven by a PRL-426 ; (4) f max is measured using a PRL- 425N with the corresponding input connectors as the receiver ...

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