v23818-h308-l57 Infineon Technologies Corporation, v23818-h308-l57 Datasheet - Page 10

• Manufacturer Part Number: v23818-h308-l57
• Description: Small Form Factor Multimode Mbit/s Oc-12 Transceiver With Connector
• Manufacturer: Infineon Technologies Corporation

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.
Figure 5
Pin Description
RS pin - The RS Rate Select: is not connected.
LF pin - The LF pin (Laser Fault) is a TTL output of the Laser Driver Supervisor Circuit.
EMI-Recommendation
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
Data Sheet
RX VCC 2
RX VEE 1
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.
RXD + 5
RXD - 4
SD 3
RX VCC 3
RX VEE 2
RXD + 6
RXD - 5
RS 1
SD 4
RX CLK + 5
RX CLK - 4
VCC PIN 1
RX VCC 7
RX VEE 2
RX VEE 3
RX VEE 6
RXD + 10
RXD - 9
SD 8
RX
TOP VIEW
2 x 10
2 x 6
2 x 5
10
should be placed at the end of each matched
TX
20 P MON +
19 P MON -
18 BIAS MON +
17 BIAS MON -
16 TX VEE
15 TXD -
14 TXD +
13 TX DIS
12 TX VEE
11 TX VCC
12 LASER FAULT
11 TXD -
10 TXD +
9 TX DIS
8 TX VEE
7 TX VCC
V23818-H308-L57
Application Notes
10 TXD -
9 TXD +
8 TX DIS
7 TX VEE
6 TX VCC
2002-03-21