TXN311110000000 Intel, TXN311110000000 Datasheet - Page 15

• Manufacturer Part Number: TXN311110000000
• Description: TXRX OPT SFP 2/1GBPS 850NM
• Manufacturer: Intel

Specifications of TXN311110000000

• Data Rate: 2.5Gbps
• Wavelength: 850nm
• Applications: Ethernet
• Voltage - Supply: 2.97 V ~ 3.63 V
• Connector Type: LC Duplex
• Mounting Type: SFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 859091

4.2
Figure 2.
Datasheet
CML Termination
Figure 2
receiver output. The TXN31111 Optical Transceiver has built in AC-coupling capacitors, which
help prevent a direct current path from the TXN31111 Optical Transceiver power supply to the
SerDes input. (A direct current path could damage the ESD diodes on the SerDes.)
Circuit Diagram for CML Termination on Receiver Output
•
•
3.3 V
Internal termination. For the TXN31111 Optical Transceiver receiver output, the SerDes
interface provides an internal termination resistor.
External termination. For the proper external termination of the SerDes interface, refer to the
SerDes specification.
shows a circuit diagram for the CML termination for the TXN31111 Optical Transceiver
50 Ω
Receiver Output
Intel
®
TXN31111 Tri-Rate 850 nm Optical Transceiver
Order Number: 280049, Revision: 006
AC-coupling
capacitor
Intel
®
TXN31111 Tri-Rate 850 nm Optical Transceiver
100 Ω
SerDes Input
B3243-02
20-Sept-2006
15