FM20VHIRFM20VVIR

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RedLink®FiberOpticReceiver

forDirectHighVoltageSwitching

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PreliminaryDataSheet

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FM20VHIRFM20VVIRRevisionP3

1

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DESCRIPTION

ThisFirecommsRedLink®receiverisbasedonafully

integrated photodiode with TIA, limiting amplifier

and a MOSFET open source output to handle 

switching of voltages in the range from 3  to 20V

(e.g. 3.3, 5, 12, 15V). The part also includes an

optional1kΩpullupresistor

R

.

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Housed in non‐conducting plastic the RedLink®

receiver connector is blue. The housings are

compatiblewiththeVersatileLinkstyleoffiberplug

and are optimized for use with Plastic Optic Fiber

(POF).

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The receiver operates over the industrial

temperature range of‐40⁰C to +85⁰C supporting

many

 industrial applications where reliable

command and control response is required in

electricallyharshenvironments.

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The receiver is typically used at low switching

speeds where 12V and 15V power electronic

devices are being switched at kHz speeds but can

operateupto5MBdifrequired.

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AVAILABLEOPTIONS

Table1

ORDERINGINFORMATION/PARTNUMBERS

5MBdHorizontalPackage

Inverting,TTL

FM20VHIR

5MBdVerticalPackage

Inverting,TTL

FM20VVIR

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FEATURES

 IdealforusewithPOF

 MOSFEToutputstagetypicallyusedtodirectly

switch12Vand15Vthyristorgatedevices.

 Optimizedfordatatransmissionfrom

DCto5MBd

 Industrialtemperaturerange‐40⁰Cto85⁰C

 Flameretardant(UL94V‐0)connector

housings

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 Fullyintegratedphotodiode,TIAandlimiting

amplifierinasingleIC

 5VTTL/CMOScompatibleI/Oforeaseof

design

 Integrated1kΩpullupresistortoVcc(R

)

 Lowpulsewidthdistortio n

 CompatiblewithVersatileLinkcablesand

connectors

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APPLICATIONS

Table2

APPLICATIONS

Application

Switchingof20V,18V,15Vand12V

thyristorgatedrivers.Directswitchingof

SCR’sandIGBT’s

Distance

50metersStepIndex(SI)POFintypical

operatingconditions

30metersinworstcaseconditions

Speed

DCto5MBd(dependingonseries

resistanceandloadcapacitance)



FM20VHIRFM20VVIRRevisionP3

2

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SPECIFICATIONS

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1, V

2, Gnd

3, Vcc

4, R

Gnd

5, Gnd

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FIGURE1

Receiverpin‐out,topview

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Table4

REGULATORYCOMPLIANCE

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Parameter Symbol Standard Level

ElectrostaticDischarge,

HumanBodyModel(contactESD)

HBM Mil‐STD‐883 Level2(4kV)

ULCertification UL 94V‐0 FilesNo.(Pending)

StorageCompliance MSL J‐STD‐020D 2a(4‐weekfloorlife)

RestrictionofHazardous

SubstancesDirective

RoHS Directive2011/95/EU Certifiedcompliant

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Table3

RECEIVERPINDESCRIPTION

Pin Name Symbol

1 Receiveroutput V

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2 ReceiverGround Gnd

3 ReceiverVcc Vcc

4 R

pullupresistor R

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5 RetainingPin Gnd

8 RetainingPin Gnd

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