PRL-420PD PULSE RESEARCH LAB, PRL-420PD Datasheet

Product Description:2-Ch.Translator,TTLtoPECL

PRL-420PD

Manufacturer Part Number

PRL-420PD

Description

Product Description:2-Ch.Translator,TTLtoPECL

Manufacturer

PULSE RESEARCH LAB

Datasheet

1.PRL-420ND.pdf (2 pages)

Specifications of PRL-420PD

Rohs Compliant

Lead Free Status / RoHS Status

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PRL-420ND DUAL CHANNEL TTL TO NECL LOGIC LEVEL TRANSLATOR

PRL-420PD DUAL CHANNEL TTL TO PECL LOGIC LEVEL TRANSLATOR

APPLICATIONS

FEATURES

DESCRIPTION

The PRL-420ND and PRL-420PD are, respectively, dual channel TTL/CMOS to NECL and TTL/CMOS to PECL Logic Level

Translators. Each unit has a switch-selectable 1.5V or 1V input threshold voltage. The PRL-420ND has a pair of complementary NECL

outputs suitable for driving 50 Ω loads terminated to -2V. The complementary PECL outputs from the PRL-420PD are suitable for

driving 50 Ω loads terminated to +3V. The outputs of both units can also drive AC coupled or floating 50 Ω.

These Logic Level Translators are designed specifically for use in testing and interfacing of high speed digital communications circuits,

where conversions from TTL/CMOS level signals to NECL and PECL level signals are often required. They are ideal building blocks

that complement other PRL Logic Level Translators, such as the PRL-450ND, PRL-450PD, PRL-460NPD and PRL-460PND, etc. in

systems integration applications where interconnections of mixed logic signals are often necessary.

They are ready-to-use functional modules housed in 1.3 x 2.9 x 3.9-in. extruded aluminum enclosures and are supplied with ±8.5V

AC/DC Adaptors. Both units have BNC input connectors and SMA output connectors. Block diagrams of these Logic Level

Translators are shown in Fig. 1A and Fig. 1B.

If mounting is desired, a pair of 35001420 mounting brackets can accommodate two PRL modules of the same length. A number of

PRL modules can also share a single ±8.5V AC/DC adaptor using the PRL-730 or PRL-736 voltage distribution module. Please see the

Accessories Section for more detail.

•

Converting TTL/CMOS signals to Differential

NECL/PECL Signals

High Speed Digital Communications system

testing

High Speed SONET Clock Level Translation

Converting TTL/CMOS Clocks to

NECL/PECL Clocks for connection to

Transient Recorders

f max > 300 MHz

750 ps/1100 ps t

50 Ω Ω Ω Ω TTL/CMOS Input

1.5V or 1V Selectable Input Threshold

Complementary NECL/PECL Outputs

BNC Input/SMA Output Connectors

DC Coupled I/O's

Self-contained 1.3 x 2.9 x 3.9-in. units

including AC/DC Adapters

for PRL-420ND/420PD

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-420PD

PRL-420PD Summary of contents

Page 1

... Translators. Each unit has a switch-selectable 1. input threshold voltage. The PRL-420ND has a pair of complementary NECL outputs suitable for driving 50 Ω loads terminated to -2V. The complementary PECL outputs from the PRL-420PD are suitable for driving 50 Ω loads terminated to +3V. The outputs of both units can also drive AC coupled or floating 50 Ω. ...

Page 2

... PRL-255N NECL frequency divider. The outputs of the PRL-255N are then measured using the PRL-550NQ4X, four channel NECL Terminators, connected Ω input sampling 'scope. Similarly, f MAX for the PRL-420PD is measured using the PRL-450PD as the input driver, and its outputs are connected to the differential inputs of the PRL-255P PECL frequency divider. The outputs of the PRL-255P are then measured using the PRL-550PQ4X, four channel PECL Terminators, connected Ω ...

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