FT10MxNR
650 nm DC-10 MBd RedLink®
Fiber Optic Transmitter
Datasheet
FT10MxNR Revision F
1
DESCRIPTION
Firecomms DC to 10 MBd RedLink® transmitter is
based on the highly reliable Firecomms designed
Resonant Cavity Light Emitting Diode (RCLED)
technology.
It is housed in a non-conducting plastic RedLink®
connector. The 10 MBd transmitter is grey in colour.
The housings are compatible with the Versatile Link
style fiber plug and are optimised for use with Plastic
Optic Fiber (POF) and Plastic Clad Silica (PCS).
The transmitter can be driven from TTL type logic
drivers. It operates over the industrial temperature
range of -40 °C to +85 °C, supporting many industrial
applications where reliable command and control
response is required in electrically harsh environments.
The transmitter uses a large aperture (150 μm
diameter) red (650 nm) eye-safe RCLED based on
InGaP/InGaAlP/GaAs technology. It operates over a
wide range of drive current that can be adjusted using
a serial resistor to minimise current consumption for a
given link distance.
AVAILABLE OPTIONS
Table 1
ORDERING INFORMATION / PART NUMBERS
10 MBd Horizontal Package
Non-Inverting, TTL
FT10MHNR
10 MBd Vertical Package
Non-Inverting, TTL
FT10MVNR
10 MBd Tilted Package Non-
Inverting, TTL
FT10MWNR
FEATURES
• Ideal for use with POF
• Optimised for data rates from DC to 10 MBd
• Industrial temperature range -40 °C to +85 °C
• RoHS and UL compliant
• Flame retardant (UL 94 V-0) connector housings
• Horizontal, Vertical and 30° Tilted options
• RCLED transmitter with visible red light
(650 nm wavelength)
• Low pulse width distortion
• Compatible with Versatile Link cables and
connectors
APPLICATIONS
Table 2
APPLICATIONS
Application
Automation and Industrial Control, Low-
Speed Serial Communications, Voltage
Isolation
Standard
Serial RS232, RS485, CAN Bus, Modbus,
PROFIBUS, SERCOS
Distance
50 meters Step Index (SI) POF
[1]
300 meters with 200 µm PCS fiber
[1]
Speed DC to 10 MBd
Note: 1. Depending on the installation conditions
FT10MxNR Revision F
2
SPECIFICATIONS
1, TD+
2, TD-
3, N.C.
4, N.C.
8, GND
5, GND
FIGURE 1
Transmitter 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)
Radiated Emissions Immunity Vm
-1
IEC 61000-4-3 15 Vm
-1
UL Certification UL 60950-1 File No. E362227
Storage Compliance MSL J-STD-020 2a (4-week floor life)
Restriction of Hazardous
Substances Directive
RoHS
Directive 2011/65/EU
Incl. Amendment 2015/863
Certified compliant
Eye Safety
IEC 60825-1 LED Class 1
RECOMMENDED APPLICATION CIRCUIT
1
2
3
4
C2
V
CC
(5 V)
DATA
1/2 SN75451
C1
R2
R1
Value Tolerance
R1
2 k
Ω
5%
R2 47
Ω
1%
C1
0.1
µ
F
20%
C2
1.0
µ
F
20%
8
5
FIGURE 2
Recommended transmitter application circuit. See note 7, Table 6
NOTE: R2 = 47 Ω, therefore I
F
drive current is approximately 60 mA. To reduce drive current, select a higher R2 value
Table 3
TRANSMITTER PIN DESCRIPTION
Pin
Name
Symbol
1 RCLED ANODE TD+
2 RCLED CATHODE TD-
3 NOT CONNECTED NC
4 NOT CONNECTED NC
5 RETAINING PIN GND
8 RETAINING PIN GND