EDL300T
125 Mbps Fiber Optic
OptoLock® Transceiver
Data Sheet
EDL300T Revision B
1
DESCRIPTION
Firecomms Ethernet OptoLock® transceiver
combines a pair of Firecomms Fast Ethernet fiber
optic components within a miniature housing to
provide instant termination for bare Plastic Optical
Fiber (POF). This POF port significantly quickens and
simplifies the connection of devices in
communications and infotainment networks.
The design of OptoLock enables the fiber to be cut
and terminated to the exact required length on site,
allowing even the most novice consumer to quickly
and easily terminate the bare optical fiber.
OptoLock is a RCLED-based 650 nm fiber optic
solution designed to provide a Fast Ethernet
communication link over POF. Firecomms’ unique
RCLEDs provide high levels of light coupling into the
fiber, with short rise and fall times, enabling
Ethernet-compliant signaling over large core POF.
The simple termination system in the transceiver
and the flexibility of POF reduces installation costs
to a minimum.
The electrical inputs and outputs are compatible
with low-voltage differential signaling levels for
simple integration with Ethernet PHY chips.
OptoLock is protected by U.S. patents 7,597,485
and 7,905,665, Chinese patents 101501545 A and
102135650 B and other international patents.
AVAILABLE OPTIONS
Table 1
ORDERING INFORMATION / PART NUMBER
OptoLock® Ethernet Transceiver
for 2.2mm POF, Black
EDL300T-220
OptoLock® Ethernet Transceiver
for 2.2mm POF, White
EDL300T-229
OptoLock® Ethernet Transceiver
for 1.5mm POF, Black
EDL300T-150
OptoLock® Ethernet Transceiver
for 1.5mm POF, White
EDL300T-159
FEATURES
• Simple low-cost termination solution for bare
POF
• Versions available for 1.5mm or 2.2mm POF
• Compatible with IEEE 802.3u Fast Ethernet
data communications standard
• Logic interface compatible with both LVDS
(Low-Voltage Differential Signaling) and CML
(Current-Mode Logic)
• Integrated CMOS LED driver IC
• Mechanically and electrically interchangeable
with Firecomms-enabled SMI connectors
• High-speed Resonant Cavity LED at red 650 nm
with small emission aperture suitable for POF
• Integrated high-sensitivity receiver IC and pin-
diode for one-step light-to-digital conversion
• Integrated optics to efficiently focus and direct
light
• Optimized for high-speed Fast Ethernet
• RoHS compliant
APPLICATIONS
Table 2
APPLICATIONS
Application Industrial and Robotic Links
Standard LVDS Bus
Distance 50 meters Step Index POF
[1]
Speed 125 Mbps
Note: 1. Depending on the installation conditions
EDL300T Revision B
2
SPECIFICATIONS
1
12
TX
RX
2
3
4
5
6
7
8
9
10
11
IC
IC
FIGURE 1
Transceiver pin-out, top view
1. NB: EMI Shield ground pins must be connected to the signal ground plane
on the PCB. This is important to prevent cross-talk between TX and RX and
also to shield the FOT’s from external EMI/EMC and ESD
Table 4
REGULATORY COMPLIANCE
Parameter Symbol Standard Level
Storage Compliance MSL J-STD-020E 2a (4-week floor life)
Restriction of Hazardous
Substances Directive
RoHS Directive 2011/65/EU Certified compliant
Eye Safety
IEC 60825-1 LED Class 1
Table 3
TRANSCEIVER PIN DESCRIPTION
Pin Name Symbol
Transmitter
1 EMI Shield
[1]
GND
2 Signal Input (Negative) TD-
3 Signal Input (Positive) TD+
4 Ground Pin
[1]
GND
5 DC Power Input Pin 3.3 V Vcc
6 Ground Pin
[1]
GND
Receiver
7 DC Power Input Pin 3.3 V Vcc
8 Ground Pin
[1]
GND
9 Signal Detect Output SD
10 Data Output (Negative) RD-
11 Data Output (Positive) RD+
12 EMI Shield
[1]
GND