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PDF V23818-K305-L57 Data sheet ( Hoja de datos )

Número de pieza V23818-K305-L57
Descripción Small Form Factor Multimode 850 nm 1.0625 GBd Fibre Channel 1.25 Gigabit Ethernet Transceiver 2x5 Pinning with LC Connector
Fabricantes Infineon Technologies 
Logotipo Infineon Technologies Logotipo



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Fiber Optics
Small Form Factor
Multimode 850 nm 1.0625 GBd Fibre Channel
1.25 Gigabit Ethernet Transceiver
2x5 Pinning with LC™ Connector
V23818-K305-Lxx
Features
Small Form Factor transceiver
Complies with Fibre Channel and Gigabit Ethernet
standards
Excellent EMI performance
RJ-45 style LCconnector system
Available with or without collar
Half the size of SC Duplex 1x9 transceiver
Single power supply (3.3 V)
Extremely low power consumption, 445 mW typical
LVPECL differential inputs and outputs
AC/AC coupling in accordance to SFF MSA or optional
DC/DC coupling version
Optimized for 62.5/50 µm graded index fiber
For distances of up to 700 m
Multisource 2x5 footprint1)
Small size for high port density
UL-94 V-0 certified
ESD Class 1 per MIL-STD 883D Method 3015.7
Compliant with FCC (Class B) and EN 55022
Class 1 FDA and IEC laser safety compliant
1) Current MSA documentation can be found at www.infineon.com/fiberoptics
LC™ is a trademark of Lucent
Part Number
V23818-K305-L17
V23818-K305-L57
V23818-K305-L15
V23818-K305-L55
Voltage
3.3 V
3.3 V
Signal Detect Collar
LVTTL
yes
LVTTL
no
Input
DC
AC
DC
AC
Data Sheet
1
Output
DC
AC
DC
AC
2003-01-22

1 page




V23818-K305-L57 pdf
V23818-K305-Lxx
Description
Functional Description of 2x5 Pin Row Transceiver
This transceiver is designed to transmit serial data via multimode cable.
TxDis
TD
TD+
RD
RD+
SD
Automatic
Shut-Down
LEN
Laser
Driver
Power
Control
Monitor
Receiver
Tx
Coupling Unit
e/o
Laser
o/e
Rx
Coupling Unit
o/e
Multimode Fiber
File: 1358
Figure 2 Functional Diagram
The receiver component converts the optical serial data into LVPECL compatible
electrical data (RD+ and RD). The Signal Detect (SD) shows whether an optical signal
is present.
The transmitter converts LVPECL compatible electrical serial data (TD+ and TD) into
optical serial data. Data lines are differentially 100 W 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 is inactive.
A low signal on TxDis enables transmitter. If TxDis is high the transmitter is disabled.
Data Sheet 5 2003-01-22

5 Page





V23818-K305-L57 arduino
V23818-K305-Lxx
Application Notes
Application Notes
Small Form Factor Pinning Comparison
The drawing below gives you a comparison between the different pinnings 2x5, 2x6,
2x10. Dimension for diameter and distance of additional pins is similar to the existing
dimensions of the other pins.
RxVEE 1
RxVCC 2
SD 3
RxD4
RxD+ 5
RS 1
RxVEE 2
RxVCC 3
SD 4
RxD5
RxD+ 6
VCCPIN 1
RxVEE 2
RxVEE 3
RxCLK4
RxCLK+ 5
RxVEE 6
RxVCC 7
SD 8
RxD9
RxD+ 10
Top view
Rx Tx
2 x 10
2x6
2x5
20 PMON+
19 PMON
18 BIASMON+
17 BIASMON
16 TxVEE
15 TxD
14 TxD+
13 TxDis
12 TxVEE
11 TxVCC
12 Laser Fault
11 TxD
10 TxD+
9 TxDis
8 TxVEE
7 TxVCC
10 TxD
9 TxD+
8 TxDis
7 TxVEE
6 TxVCC
File: 1506
Figure 5
Pin Description
RS pin - The RS (Rate Select) is not connected.
LF pin - The LF pin (Laser Fault) is an LVTTL output of the Laser Driver Supervisor
Circuit. A Logic 1 level can be measured in case of a laser fault. It will not show
a fault if the laser is being disabled using the TxDis input, since this is not a fault
condition.
EMI-Recommendations
To avoid electromagnetic radiation exceeding the required limits please take note of the
following recommendations.
When Gigabit switching components are found on a PCB (multiplexers, clock recoveries
etc.) any opening of the chassis may produce radiation also at chassis slots other than
that of the device itself. Thus every mechanical opening or aperture should be as small
as possible.
On the board itself every data connection should be an impedance matched line (e.g.
strip line, coplanar strip line). Data, Datanot should be routed symmetrically, vias should
be avoided. A terminating resistor of 100 W should be placed at the end of each matched
Data Sheet 11 2003-01-22

11 Page







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