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V23818-H308-L57
Small Form Factor Multimode 850 nm 622 Mbit/s OC-12 Transceiver with LC⑩ Connector
Small Form Factor
Multimode 850 nm 622 Mbit/s OC-12 Transceiver
with LC™ Connector
V23818-H308-L57
Fiber OpticsLC™ is a trademark of Lucent
FeaturesSmall Form Factor transceiverExcellent EMI performanceRJ-45 style LC™ connector systemHalf the size of SC Duplex 1x9 transceiverSingle power supply (3.3 V)Extremely low power consumption of
445mW typicalPECL and LVPECL differential inputs andoutputsSystem optimized for 62.5/50µm
graded indexfiberMultisource 2x5 footprintSmall size for high port densityUL-94 V-0 certifiedESD Class 1 per MIL-STD 883D Method 3015.7Compliant with FCC (Class B) and EN 55022For distances of up to 550 mClass 1 FDA and IEC laser safety compliantAC/AC coupling in accordance to SFF MSA
Pin Configuration
Figure1Pin Description
DescriptionThe Infineon V23818-H308-L57 OC-12 transceiver – part of Infineon Small Form Factor
transceiver family – is based on the Physical Medium Depend (PMD) sublayer and
baseband medium.
The appropriate fiber optic cable is 62.5µm or 50µm multimode fiber with LC™
connector.
The Infineon V23818-H308-L57 OC-12 transceiver is a single unit comprised of a
transmitter, a receiver, and an LC™ receptacle. This design frees the customer from
many alignment and PC board layout concerns.
This transceiver supports the LC™ connectorization concept. It is compatible with RJ-45
style backpanels for high end DataCom and Telecom applications while providing the
advantages of fiber optic technology.
The module is designed for low cost SAN, LAN, WAN, Fibre Channel and Gigabit
Ethernet applications. It can be used as the network end deviceinterface in mainframes,
workstations, servers, and storage devices, and in a broad range of network devices
such as bridges, routers, hubs, and local and wide area switches.
This transceiver operates at OC-12 ATM from a single power supply (+3.3V). The full
differential data inputs and outputs are PECL and LVPECL compatible.
Operating Range over each Optical Fiber Type
Functional Description of 2x5 Pin Row TransceiverThis transceiver is designed to transmit serial data via multimodecable.
Figure2Functional DiagramThe receiver component converts the optical serial data into PECL compatible electrical
data (RD+ and RD–). The Signal Detect (SD, active high) shows whether an optical
signal is present.
The transmitter converts PECL compatible electrical serial data (TD+ and TD–) into
optical serial data. Data lines are differentially 100Ω terminated.
The transmitter contains a laser driver circuit that drives the modulation and bias current
of the laser diode. The currents are controlled by a power control circuit to guarantee
constant output power of the laser over temperature and aging.
The power control uses the output of the monitor PIN diode (mechanically built into the
laser coupling unit) as a controlling signal, to prevent the laser power from exceeding the
operating limits.
Single fault condition is ensured by means of an integrated automatic shutdown circuit
that disables the laser when it detects laser fault to guarantee the laser Eye Safety.
The transceiver contains a supervisory circuit to control the power supply. This circuit
makes an internal reset signal whenever the supply voltage drops below the reset
threshold. It keeps the reset signal active for at least 140 milliseconds after the voltage
has risen above the reset threshold. During this time the laser isinactive.
A low signal on TxDis enables transmitter. If TxDis is high the transmitter is disabled.
Regulatory Compliance
Technical DataExceeding any one of these values may destroy the device immediately.
The electro-optical characteristics described in the following tables are valid only for use
under the recommended operating conditions.
Absolute Maximum Ratings
Recommended Operating Conditions
Transmitter
Receiver
