Semiconductor Group
V23826-K305-C13/C53/C63/C73*, MM 850nm Fibre Channel/Gigabit Ethernet 1x9 Trx
4
Pin Description
Regulatory Compliance
APPLICATION NOTE
Gigabit transceivers and matching circuits are high frequency
components and shall be terminated as recommended in the
application notes for proper EMI performance. Electromagnetic
emission may be caused by these components.
To prevent emissions it is recommended that cutouts for the
fiber connectors be designed as small as possible.
It is strongly recommended that the Tx plug and the Rx plug be
separated with a bar that divides the duplex SC opening.
If shielded parts are employed, they should be in proper contact
with the bezel (back plane).
Since the shield is galvanically isolated from signal ground it is
strongly recommended to prevent any contact between shield
and the circuitry i.e. even any ground connection on the pcb
may be harmful to EMI performance.
In cases where EMI performance becomes critical it has proven
to be helpful when using SC-plugs with less metal parts inside
(as Siemens fibers).
Pin Name
Level/Logic
Pin#
Description
RxV
EE
RD
Rx Ground
Power Supply
1
Negative power supply, normally ground
Rx Output Data
PECL Output
2
Receiver output data
RDn
3
Inverted receiver output data
SD
Rx Signal Detect
PECL Output active high
4
High level on this output shows there is an optical
signal.
RxV
CC
TxV
CC
TDn
Rx 3.3 V/5 V
Power Supply
5
Positive power supply, 3.3 V/5 V
Tx 3.3 V/5 V
6
Tx Input Data
PECL Input
7
Inverted transmitter input data
TD
8
Transmitter input data
TxV
EE
Case
Tx Ground
Power Supply
9
Negative power supply, normally ground
Support
Mech. Support
S1/2
Not connected
Feature
Standard
Comments
Electrostatic Discharge (ESD)
to the Electrical Pins
MIL-STD 883C
Method 3015.4
Class 1 (>1000 V)
Immunity:
Electrostatic Discharge (ESD) to the
Duplex SC Receptacle
EN 61000-4-2
IEC 1000-4-2
Discharges of ±15kV with an air discharge probe on the
receptacle cause no damage.
Immunity:
Radio Frequency
Electromagnetic Field
EN 61000-4-3
IEC 1000-4-3
With a field strength of 3 V/m rms, noise frequency ranges
from 10 MHz to 1 GHz. No effect on transceiver performance
between the specification limits.
Emission:
Electromagnetic Interference EMI
FCC Class B
EN 55022 Class B
CISPR 22
Noise frequency range: 30 MHz to 6 GHz; Margins depend on
PCB layout and chassis design