PRL-450ND PULSE RESEARCH LAB, PRL-450ND Datasheet

Product Description:2-Ch.Translator, NECLtoTTL

PRL-450ND

Manufacturer Part Number

PRL-450ND

Description

Product Description:2-Ch.Translator, NECLtoTTL

Manufacturer

PULSE RESEARCH LAB

Datasheet

1.PRL-450ND.pdf (2 pages)

Specifications of PRL-450ND

Rohs Compliant

Lead Free Status / RoHS Status

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APPLICATIONS

FEATURES

PRL-450ND DUAL CHANNEL NECL TO TTL TRANSLATOR

PRL-450PD DUAL CHANNEL PECL TO TTL TRANSLATOR

DESCRIPTION

The PRL-450ND and PRL-450PD are, respectively, dual channel NECL and PECL to TTL Logic Level Translators. Each

unit can receive either single ended or differential input signals, to be selected by a switch. The outputs of these translators

have 50 Ω back terminations, and, therefore, they drive 50 Ω terminated or unterminated lines. These high-speed translators

facilitate testing of high speed digital communications circuits, where conversion of NECL and PECL clock and data signals

to TTL level signals is often required.

The PRL-450ND is designed to interface with NECL circuits operating with a -5.2 V or -4.5 V supply, and The PRL-450PD

is designed to interface with PECL circuits operating with a +5 V supply. In the differential input mode, both inputs D and

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

termination resistors R

Each unit is supplied with a ± 8.5V AC/DC Adaptor and housed in an attractive 1.3 x 2.9 x 3.9-in. extruded aluminum

enclosure.

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.

D of the PRL-450ND are terminated into 50 Ω /-2 V, and those of the PRL-450PD into 50 Ω /3 V. In this mode, either one or

•

Converting Single Ended or Differential

NECL/PECL Signals to TTL Signals

High Speed Digital Communications

systems Testing

High Speed SONET Clock Level

Translation

f max > 300 MHz

1.1 ns Typical Output Rise & Fall Times

50 Ω/-2 V Input for NECL and 50 Ω/3 V

for PECL

Single Ended or Differential Inputs

Complementary 50 Ω TTL Level Outputs

SMA I/O Connectors

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

including AC/DC Adapters

's for the D input channels are changed to 62 Ω .

, nominally -1.3 V for the PRL-450ND and 3.7 V for the PRL-450PD, and

PRL-450ND

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-450ND

PRL-450ND Summary of contents

Page 1

... PECL circuits operating with supply. In the differential input mode, both inputs D and D of the PRL-450ND are terminated into 50 Ω /-2 V, and those of the PRL-450PD into 50 Ω 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 for the D input channels are changed to 62 Ω ...

Page 2

... PLH t Propagation Delay to output ↓ PHL t /t Rise/Fall Times(10%-90 Skew between any 2 outputs SKEW f max Max Clock Frequency Size Weight Fig. 1A PRL-450ND Dual Channel NECL to TTL Translator ≤ ≤ ≤ ≤ PRL-450ND Min Typ Max 49.5 50 50.5 49.5 50 50.5 -2.2 -2 -1.8 -1 ...

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