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C85-100M-C8A 

High Performance & Low Cost 100Mbps Fast Ethernet Multimode Fiber Transceiver

Using 850nm VCSEL Transmitter & 850 nm GaAs PINreceiver
for FDDI, 100 Mbps ATM, and Fast Ethernet Transceivers in Low Cost 1x9 Package Style

 
FEATURES  
  • Fully compatible with 850 nm optical links and various brandname's transceivers.  
  • 50 % power saving than LED transceivers.  
  • Consisting of 850 nm VCSEL transmitter & 850 nm GaAsPIN receiver.  
  • Full compliance with the IEEE 802.3 standard.  
  • Single +5V power supply.  
  • Industry standard 1 x 9 package footprint.  
  • Duplex SC connector.  
  • Class I Laser Safe per FDA and IEC 
  • C85-100M-C8A operating to 2 km for multimode optical fiber.  
  • High performance and low cost.  

DESCRIPTION

The C85-100M-C8A fast ethernet transceiver from Lasermate is a 100Mbps/125MBd fiber optic transceiver module in the new industry standard 1x9 SIP package style with a duplex SC connector interface.   The C85-100M-C8A  transceivers are designed to meet the standard 2,000 m distance requirement.   This provides a low cost solution to the requirements of Fast Ethernet interconnects. They are class I laser product compliant with FDA Radiation Performance Standards, 21 CFR Subchapter J, as well as  International Safety Standard IEC-825-1.  Typical applications include: LANs (Local Area Networks), clustered workstation links, and connections to mass storage devices.

The C85-100M-C8A  transceiver has an independent Transmitter (TX) and Receiver (RX). The transmitter consists of a high reliability 850nm VCSEL (Vertical Cavity Surface Emitting Laser) diode which couples to a fiber optic cable through an SC connector. The TX is driven with a differential PECL (Positive Emitter Coupled Logic) signal applied to TX In+ and TX In-. The maximum optical power meets the class I laser safety standard per FDA and IEC.   The receiver consists of a high performance 850 nm GaAs PIN photodiode detector. Optical input is coupled to the receiver with either a 50/125 or a 62.5/125 micron fiber through an SC connector.

APPLICATIONS:

  • FDDI / Fast Ethernet
  • ATM
Transmitter Electro-optical Characteristics:
 
PARAMETERS 
SYMBOL
MIN           TYP           MAX 
UNIT
Wavelength 
lp
830          850          860 
nm 
Optical Output Power (1)
Po
 -10                            -4 
 
dBm 
Supply Current 
Icc
                35              45
 mA
Power Dissipation
PDISS
0.175
W
Supply Voltage
Vcc
4.75                           5.25
V 
Data Input Voltage - Low(2)
VIL -VCC
-1.810                      -1.475
V
Data Input Voltage - High(2)
VIH - VCC
-1.165                     -0.880
V
Optical Rise Time
TR
                   0.6               3.5
ns
Optical Fall Time
TF
                  0.8               3.5
ns
Duty Cycle Distortion
DCD
                                      0.6
ns p-p
Systematic Jitter
SJ 
                                      0.6
ns p-p
Random  Jitter
RJ
                    0.2                    0.69
ns p-p
(1) The launch power of (-10, -4) dBm is specially designed for the 2 km distance requirement and the maximum 
optical power meets the class I laser safety standard.
(2) Voltage levels listed are compatible with 100K Series PECL logic levels. The parts are compatible with 10K and 10KH Series logic when driven with differential signals.
(3) This Optical Extinction Ratio is expressed in decibels (dB) by the relationship 10*log (Phigh avg/Plow avg).

Receiver Electro-optical Characteristics:
 
PARAMETERS 
SYMBOL 
MIN           TYP           MAX 
UNIT
Supply Current 
Icc
 55
 mA
Power Dissipation
PDISS
0.275
W
Supply Voltage
Vcc
4.75                           5.25
V 
Data Output Voltage - Low (1)
VOL - VCC
-1.810                      -1.475
V
Data Output Voltage - High(1)
VOH - VCC
-1.165                     -0.880
V
Signal Detect output Voltage- Low
VOL - VCC
-1.810                      -1.475
V
Signal Detect output Voltage- High
VOH - VCC
-1.165                     -0.880
V
Rise Time
TR
                   1.3               2.2
ns
Fall Time
TF
                   1.3               2.2
ns
Duty Cycle Distortion
 DCD
                                       0.4
ns p-p
Systematic Jitter
SJ
                                         1.20
ns p-p
Random  Jitter
RJ
                    0.2              2.14
ns p-p
Sensitivity   
                  -30             -27 
dBm
Operating Wavelength
l
   800                          900
nm
Power Level (avg.) Detect Assert
PA
                                    -33
dBm
Power Level (avg.) Detect Deassert
PD
                               -45 
dBm
Level detect hysteresis
PA - PD
   1.75          2.25           2.75
dB
Signal Detect Assert Time  
                                        100
ms
Signal Detect Deassert Time  
                                        350
ms
(1) Voltage levels listed are compatible with 100K Series PECL logic levels. The parts are compatible with 10K and 10KH Series logic when driven with differential signals.

Absolute Maximum Ratings:
 
Parameter
Symbol
  Min.
Max.
Unit
Storage Temperature 
Ts
 -40
100 
oC 
Operating Temperature
To
0
70
oC
Lead Solder Temperature    
 260/10
oC /sec
Supply Voltage
VCC
 -0.5
7 
V

OUTLINE DIMENSIONS:

 
 Typical Application Circuit:


 

 
If you have any comments or request for detail product information, please fill the
Quotation & Information Request Form or mail to: info@lasermate.com .

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