MLC-25-8-X-TL Optical Fibre Channel -- +3.3V
Small Form Factor (SFF) Transceiver at 2.125 GBaud
Features
n
2.125 Gbps Fibre Channel Performance
n
TTL Signal Detect Output
n
Transmitter Disable Input
n
50Ω AC coupled LVPECL level termination lines
n
Low profile fits Mezzanine Card Applications
n
Single +3.3V Power Supply
n
Wave Solderable / Aqueous Washable
n
Class 1 Laser Safety Compliant
n
UL 1950 Approved
PRODUCT OVERVIEW
The MLC-25-8-X-TL Small Form Factor (SFF) optical
transceivers are high performance integrated duplex data
links for bi-directional communication over multimode or
single mode optical fiber. The MLC-25-8 module is
specifically designed to be used in Fibre Channel
applications. The MLC-25-8 transceivers are provided with
the LC receptacle that is compatible with the industry
standard LC connector. The Stratos Lightwave SFF
transceivers measure 0.532 inches in width. These
transceivers provide double port densities by fitting twice
the number of transceivers onto the same board as
compared to a 1x9 transceiver. This saves on system
costs and can reduce overall design time. The MLC-25-8-
X-TL operates at +3.3V.
This optoelectronic transceiver module is a class 1 laser
product compliant with FDA Radiation Performance
Standards, 21 CFR Subchapter J. This component is also
class 1 laser compliant according to International Safety
Standard IEC-825-1.
SHORT WAVELENGTH LASER
The use of short wavelength VCSELs (Vertical Cavity
Surface-Emitting Laser) and high volume production
processes has resulted in a low cost, high performance
product available in various data transfer rates up to 2.125
GBaud.
LONG WAVELENGTH LASER
The MLC-25-8-2-TL is provided with single mode optics.
The 1300 nm laser provides highly reliable single mode
communications which meets or exceeds the Fibre
Channel distance requirements.
MAX
85
260
6.0
2.6
10
UNITS
°C
°C
V
V pp
V pk
NOTES
ORDERING INFORMATION
MLC- 25 - 8 - X - TL
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Storage Temperature
Soldering Temperature
Supply Voltage
Data AC Voltage
Data DC Voltage
PAR AMETER
Ambi ent Operati ng T mperature
e
Supply Voltage
Baud Rate
RECOMMENDED OPERATING CONDITIONS
SYMB OL
T
a
V cc
BRate
MIN
0
3.0
TYP
3.3
2.125
MAX
70
3.6
U N ITS
°C
VD C
GBaud
N OTES
PR
EL
IM
IN
AR
Y
+3.3V POWER SUPPLY
SIGNAL DETECT
T
- TTL Output
WAVELENGTH
1
- 850 nm (multimode)
2
- 1300 nm (single mode) 2 km
2M
- 1300 nm (single mode) 10 km
2L
- 1300 nm (single mode) 20 km
COMMUNICATIONS PROTOCOL
8
- Fibre Channel, 2.125GBaud
3
- ATM OC-12, 622MBaud
4
- Gigabit Ethernet, 1.25GBaud
6
- Fibre Channel, 1.0625GBaud
7
- ATM OC-48, 2.488GBaud
SYMBOL
Tstg
V cc
Tx+, Tx-
Tx+, Tx-
MIN
-40
-10
10 seconds on leads only
Vcc - ground
Differential
V (Tx+ or Tx-) - ground
±100ppm
Selectronix Ltd, Minerva House,
Calleva Park, Aldermaston,
Reading, RG7 8NE, England.
Tel: +44 (0) 118 9817387
Fax: +44 (0) 118 9817608
e-mail:
fibrechannel@selectronix.co.uk
MLC-25-8-X-TL Optical Fibre Channel -- +3.3V
Small Form Factor (SFF) Transceiver -- 2.125GBaud
MODULE SPECIFICATIONS - ELECTRICAL
PAR AMETER
Supply C urrent
TR AN SMITTER
EC L Input (Si ngle Ended)
EC L Input (D i fferenti al)
Input Impedance
TX_D ISABLE i nput voltage - Hi gh
TX_D ISABLE i nput voltage - Low
R EC EIVER
EC L Output (Si ngle Ended)
EC L Output (D i fferenti al)
Total Ji tter
TTL Si gnal D etect Output - Low
TTL Si gnal D etect Output - Hi gh
2.4
3.0
TJ
300
600
750
1500
930
1860
85
0.5
mVpp
mVpp
p se c
V
V
IOL = -1.6 mA, 1 TTL Uni t Load
IOH = 40 µA, 1 TTL Uni t Load
AC coupled outputs
AC coupled outputs
Zi n
V
IH
V
IL
2
0
0.8
350
700
720
1440
50
1250
2500
mVpp
mVpp
ohms
V
V
AC coupled i nputs
AC coupled i nputs
Ri n > 100 kohms @ D C
SYMB OL
lcc
lcc
MIN
TYP
140
MAX
150
175
U N ITS
mA
mA
N OTES
Ta = 25°C , Vcc = 3.3 V
0° C <Ta< 70°C , 3.0 V< Vcc <3.6V
Ta = 25° C, Vcc = 3.3 V
PERFORMANCE SPECIFICATIONS - OPTICAL 850 nm Laser Multimode
PARAMETER
SYMBOL
MIN
TYP
MAX
FIBER LENGTH
50 µm Core Diameter MMF
300
500
300
62.5 µm Core Diameter MMF
200
1
TRANSMITTER
Optical Transmit Power
P opt
-10
-5
Optical Center
830
850
860
λ
Spectral Width
4
∆λ
Extinction Ratio
ER
6
Optical Modulation Amplitude
OMA
200
Relative Intensity Noise
RIN
-118
Total Jitter
TJ
105
Output Rise, Fall Time
t
R
, t
F
150
RECEIVER
Optical Input
770
860
λ
Optical Input Power
Pr
-17
0
Optical Modulation Amplitude
OMA
50
Optical Return Loss
ORL
12
30
Signal Detect - Asserted
Pa
-17
Signal Detect - Deasserted
Pd
-29
Signal Detect - Hysteresis
Pa - Pd
1.5
5.0
Note
1
- This is the link length for at least 95% of the installed fiber base.
Ta = 25° C, Vcc = 3.3 V
UNITS
m
m
dB m
nm
nm
dB
µW
dB/Hz
p se c
p se c
nm
dB m
µW
dB
dB m
dB m
dB
BER < 1.0E-12
pk-pk
measured on transition - low to high
measured on transition - high to low
NOTES
BER < 1.0E-12 @ 2.125 GBaud
BER < 1.0E-12 @ 2.125 GBaud
average @ 850 nm
RMS
P1/P0
pk-pk
20 - 80% values, measured unfiltered
Selectronix Ltd, Minerva House,
Calleva Park, Aldermaston,
Reading, RG7 8NE, England.
Tel: +44 (0) 118 9817387
Fax: +44 (0) 118 9817608
e-mail:
fibrechannel@selectronix.co.uk
MLC-25-8-X-TL Optical Fibre Channel -- +3.3V
Small Form Factor (SFF) Transceiver -- 2.125GBaud
MLC-25-8-2-TL PERFORMANCE SPECIFICATIONS - OPTICAL
PARAMETER
FIBER LENGTH
9.0 µm Core Diameter SMF
TRANSMITTER
Optical Center
RMS Spectral Width
Optical Transmit Power
Optical Modulation Amplitude
RECEIVER
Optical Input Power
Optical Modulation Amplitude
Optical Center
Optical Return Loss
SIgnal Detect - Asserted
Signal Detect - Deasserted
Signal Detect - Hysteresis
SYMBOL
MIN
2
λ
∆λ
P opt
OMA
Pr
OMA
λ
ORL
Pa
Pd
Pa - Pd
1270
-14.5
150
-19
15
1270
12
-29
1.5
5.0
TYP
5
1310
1355
4
-3
MAX
UNITS
km
nm
nm
dB m
µW
dB m
µW
nm
dB
dB m
dB m
dB
NOTES
BER < 1.0E-12 @ 2.125 GBaud
Ta=25°C, Vcc=3.3V
RMS
average @ 1310 nm
pk-pk
average power for BER < 1.0E-12
pk-pk
-3
1310
30
1355
-19
measured on transition - low to high
measured on transition - high to low
MLC-25-8-2M-TL PERFORMANCE SPECIFICATIONS - OPTICAL
PARAMETER
FIBER LENGTH
9.0 µm Core Diameter SMF
TRANSMITTER
Optical Center
RMS Spectral Width
Optical Transmit Power
Optical Modulation Amplitude
RECEIVER
Optical Input Power
Optical Modulation Amplitude
Optical Center
Optical Return Loss
Signal Detect - Asserted
Signal Detect - Deasserted
Signal Detect - Hysteresis
SYMBOL
MIN
10
λ
∆λ
P opt
OMA
Pr
OMA
λ
ORL
Pa
Pd
Pa - Pd
1285
-12
150
-20
15
1270
12
-29
1.5
5.0
TYP
20
1310
1335
3
-3
MAX
UNITS
km
nm
nm
dB m
µW
dB m
µW
nm
dB
dB m
dB m
dB
NOTES
Ta=25°C, Vcc=3.3V
BER < 1.0E-12 @ 2.125 GBaud
RMS
average @ 1310 nm
pk-pk
average power for BER < 1.0E-12
pk-pk
-3
1310
30
1355
-20
measured on transition - low to high
measured on transition - high to low
MLC-25-8-2L-TL PERFORMANCE SPECIFICATIONS - OPTICAL
PARAMETER
FIBER LENGTH
9.0 µm Core Diameter SMF
TRANSMITTER
Optical Center
RMS Spectral Width
Optical Transmit Power
Optical Modulation Amplitude
RECEIVER
Optical Input Power
Optical Modulation Amplitude
Optical Center
Optical Return Loss
Signal Detect - Asserted
Signal Detect - Deasserted
Signal Detect - Hysteresis
SYMBOL
MIN
20
λ
∆λ
P opt
OMA
Pr
OMA
λ
ORL
Pa
Pd
Pa - Pd
1300
-9.5
150
-21
15
1270
12
-29
1.5
5.0
TYP
25
1310
1320
2
-3
MAX
UNITS
km
nm
nm
dB m
µW
dB m
µW
nm
dB
dB m
dB m
dB
NOTES
Ta=25°C, Vcc=3.3V
BER < 1.0E-12 @ 2.125 GBaud
RMS
average @ 1310 nm
pk-pk
average power for BER < 1.0E-12
pk-pk
-3
1310
30
1355
-21
measured on transition - low to high
measured on transition - high to low
Selectronix Ltd, Minerva House,
Calleva Park, Aldermaston,
Reading, RG7 8NE, England.
Tel: +44 (0) 118 9817387
Fax: +44 (0) 118 9817608
e-mail:
fibrechannel@selectronix.co.uk
MLC-25-8-X-TL Optical Fibre Channel -- +3.3V
Small Form Factor (SFF) Transceiver -- 2.125GBaud
EMI and ESD CONSIDERATIONS
Stratos Lightwave optoelectronic transceivers offer a metalized plastic case and a special chassis grounding clip. As
shown in the drawing, this clip connects the module case to chassis ground when installed flush through the panel
cutout. The grounding clip in this way brushes the edge of the cutout in order to make a proper contact. The use of a
grounding clip also provides increased electrostatic protection and helps reduce radiated emissions from the module or
the host circuit board through the chassis faceplate. The attaching posts are at case potential and may be connected to
chassis ground. They should not be connected to circuit ground.
Plastic optical subassemblies are used to further reduce the possibility of radiated emissions in multimode transceiver.
By providing a non-metal receptacle for the optical cable ferrule, the gigabit speed RF electrical signal is isolated from
the connector area thus preventing radiated energy leakage from these surfaces to the outside of the panel.
MECHANICAL DIMENSIONS –
PANEL CUTOUT DIMENSIONS
SUGGESTED PCB LAND PATTERN
Selectronix Ltd, Minerva House,
Calleva Park, Aldermaston,
Reading, RG7 8NE, England.
Tel: +44 (0) 118 9817387
Fax: +44 (0) 118 9817608
e-mail:
fibrechannel@selectronix.co.uk
