FM20VHIRFM20VVIR
RedLink®FiberOpticReceiver
forDirectHighVoltageSwitching
PreliminaryDataSheet

FM20VHIRFM20VVIRRevisionP4
1
NOT RECOMMENDED FOR NEW DESIGNS
* For new designs please see part numbers: FR20DHIR FR20DVIR
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
L
.
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).
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.
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.
AVAILABLEOPTIONS
Table1
ORDERINGINFORMATION/PARTNUMBERS
5MBdHorizontalPackage
Inverting,TTL
FM20VHIR
5MBdVerticalPackage
Inverting,TTL
FM20VVIR
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
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
L
)
Lowpulsewidthdistortion
CompatiblewithVersatileLinkcablesand
connectors
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P4
2
SPECIFICATIONS

IC
1, V
O
2, Gnd
3, Vcc
4, R
L
8
,
Gnd
5, Gnd
R
L
FIGURE1
Receiverpin‐out,topview
Table4
REGULATORYCOMPLIANCE
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2011/65/EU Certifiedcompliant
Table3
RECEIVERPINDESCRIPTION
Pin Name Symbol
1 Receiveroutput V
0
2 ReceiverGround Gnd
3 ReceiverVcc Vcc
4 R
L
pullupresistor R
L
5 RetainingPin Gnd
8 RetainingPin Gnd
