050_316 Datasheet, PDF (7/15 Pages) Glenair, Inc. – PRODUCT BRIEF

050-316 Product Brief
PC Board Mount Dual-Transmitter
100 Mbps – 5 Gbps, MMF, 3.3V
The Transmitters provides Class 1 eye safety by design and is compliant with US FDA CDRH AEL Class 1 and EN(IEC)
60825-1,2, EN60950 Class 1. The eye safety circuit continuously monitors optical output power levels and will disable the
transmitter and assert a TX_FAULT signal upon detecting an unsafe condition. Such unsafe conditions can be created by
inputs from the host board (Vcc fluctuation, unbalanced code) or faults within the module.
FUNCTIONAL I/O
The PC board mount dual-transmitter accepts industry standard differential signals such as LVPECL and CML within the
scope of the SFP MSA. To simplify board requirements, transmitter bias resistors and ac coupling capacitors are
incorporated, per SFF-8074i, and hence are not required on the host board. The module is AC-coupled and internally
terminated.
Figure 3 illustrates a recommended interface circuit to link the PC board mount dual-transmitter to the supporting Physical
Layer integrated circuits.
The PC board mount dual-transmitter interfaces with the host circuit board through twenty I/O pins identified by function in
Table 7. The dual-transmitter high speed transmit and receive interfaces require SFP MSA compliant signal lines on the
host board. The TX1_DISABLE, TX2_DISABLE, TX1_FAULT and TX2_FAULT require TTL lines on the host board (per
SFF-8074i) if used. If an application chooses not to take advantage of the functionality of these pins TX1_Disable and
TX2_Disable need to be tied to GND, TX1_Fault , TX2_Fault do not need to be connected.
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©2014 Glenair, Inc.
GLENAIR, INC.
www.glenair.com
REV: C
∙ 1211 AIR WAY
US Cage Code 06324
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