FCL-8521-3

FCL-8521-3 Datasheet

1000BASE-T Copper GBIC Transceivers FCL-8520/8521-3

Part	Datasheet
FCL-8521-3	FCL-8521-3 (pdf)

Related Parts	Information
FCL-8520-3	FCL-8520-3

PDF Datasheet Preview
Finisar Product Specification 1000BASE-T Copper GBIC Transceivers FCL-8520/8521-3 Product Features • Up to 1.25Gb/s bi-directional data links • RoHS compliant and Lead Free • Extended operating temperature range 0°C to +75°C • Hot-pluggable • Fully metallic enclosure for low EMI • Low power 1.5W typical • Access to physical layer IC via 2- wire serial bus • Gigabit Ethernet over Cat 5 cable The FCL-8520-3 uses the GBIC’s RX_LOS pin for link indication, and 1000BASE-X auto-negotiation must be disabled on the host system. The FCL-8521-3 is compatible with 1000BASE-X auto-negotiation, but does not have a link indication feature RX_LOS is internally grounded . See AN-2032, “Commonly Asked Questions Regarding Auto-negotiation on Finisar’s 1000BASE-T GBICs”4, for a more complete explanation on the differences between the two models. PRODUCT SELECTION FCL-8520-3 FCL-8521-3 Link Indicator on RX_LOS Pin Yes No Compatible with 1000BASE-X Auto-negotiation No Yes FCL-8520/8521-3 1000BASE-T GBIC Product Specification Finisar I. GBIC to Host Connector Pin Out Pin Name RX_LOS* GND MOD_DEF 0 MOD_DEF 1 MOD_DEF 2 TX_DISABLE GND -RX_DAT +RX_DAT GND VCC GND +TX_DAT -TX_DAT GND Pin # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Sequence 2 1 2 1 Note RX_LOS is used for link indication on the FCL8520-3, and is internally grounded on the FCL-8521-3 Table GBIC to host connector pin assignment FCL-8520/8521-3 1000BASE-T GBIC Product Specification Finisar II. +5V Volt Electrical Power Interface The FCL-8520/8521-3 has an extended input voltage range of to V, compared to the GBIC standard of to V. The 6V maximum voltage is not allowed for continuous operation. +5 Volt Electrical Power Interface Parameter Supply Current Input Voltage Symbol Min Typ Max Units Notes/Conditions 310 375 mA 1.7W max power over full range of voltage and temperature. See Note V Referenced to GND.

PDF Datasheet Preview

Finisar

Product Specification
1000BASE-T Copper GBIC Transceivers FCL-8520/8521-3

Product Features
• Up to 1.25Gb/s bi-directional data links
• RoHS compliant and Lead Free
• Extended operating temperature
range 0°C to +75°C
• Hot-pluggable
• Fully metallic enclosure for low

EMI
• Low power 1.5W typical
• Access to physical layer IC via 2-
wire serial bus
• Gigabit Ethernet over Cat 5 cable

The FCL-8520-3 uses the GBIC’s RX_LOS pin for link indication, and 1000BASE-X auto-negotiation must be disabled on the host system. The FCL-8521-3 is compatible with 1000BASE-X auto-negotiation, but does not have a link indication feature RX_LOS is internally grounded . See AN-2032, “Commonly Asked Questions Regarding Auto-negotiation on Finisar’s 1000BASE-T GBICs”4, for a more complete explanation on the differences between the two models.

PRODUCT SELECTION

FCL-8520-3 FCL-8521-3

Link Indicator on RX_LOS Pin

Yes No

Compatible with 1000BASE-X Auto-negotiation No Yes

FCL-8520/8521-3 1000BASE-T GBIC Product Specification

Finisar

I. GBIC to Host Connector Pin Out

Pin Name

RX_LOS* GND MOD_DEF 0 MOD_DEF 1 MOD_DEF 2 TX_DISABLE GND -RX_DAT +RX_DAT GND VCC GND +TX_DAT -TX_DAT GND

Pin #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Sequence
2 1 2 1

Note RX_LOS is used for link indication on the FCL8520-3, and is internally grounded on the FCL-8521-3

Table GBIC to host connector pin assignment

FCL-8520/8521-3 1000BASE-T GBIC Product Specification

Finisar

II. +5V Volt Electrical Power Interface

The FCL-8520/8521-3 has an extended input voltage range of to V, compared to the GBIC standard of to V. The 6V maximum voltage is not allowed for continuous operation.
+5 Volt Electrical Power Interface

Parameter Supply Current

Input Voltage

Symbol Min Typ Max Units Notes/Conditions
310 375
mA 1.7W max power over
full range of voltage
and temperature.

See Note

V Referenced to GND.

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Datasheet ID: FCL-8521-3 635184