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SFP-ETH-RT-M85-LC

850 nm / 1.25 Gb/s Multimode SFP Transceiver

The SFP-ETH-RT-M85-LC is a multimode optical transceiver that supports signals up to 1.25 Gb/s for bidirectional serial data communications such as 1000BASE-SX.

FEATURES

  • SFP MSA compliant
  • 1.25 Gb/s:
    • 1000BASE-SX compliant
  • 850 nm VCSEL Transmitter
  • Link distances:
    • 300m for 62.5/125 mm multimode fiber
    • 550m for 50/125 mm multimode fiber
  • RoHS-6 compliant
  • Hot pluggable
  • Diagnostic Monitoring Interface (DMI)

SPECIFICATIONS

Transmitter Specifications (-10°C < Tc < 85°C, 3.1V < Vcc < 3.5V)

Parameter

Symbol

Min.

Typ.

Max.

Units

Notes



Optical

Optical Transmit Power

Po

-9

-3

dBm

Output power is power coupled into a 50/125 µm multimode fiber

Output Center Wavelength

λ

830

 

860

nm

 
Output Spectrum Width

Δ λ

0.85

nm

RMS (σ)

Extinction Ratio

ER

9

dB

 
Optical Rise Time

tr

 

 

260

ps

20% to 80% values

Optical Fall Time

tf

 

 

260

ps

20% to 80% values

Relative Intensity Noise

RIN

 

 

-117

dB/Hz

 



Electrical

Data Input Current – Low

IIL

-350

 

 

µA

 
Data Input Current – High

IIH

 

 

350

µA

 
Differential Input Voltage

VIH - VIL

0.5

 

2.4

V

Peak-to-peak

TX Disable Input Voltage – Low

VTDIS, L

0

 

0.5

V

There is an internal 4.7 kΩ to 10 kΩ pull-up resistor to VccTX

TX Disable Input Voltage – High

VTDIS, H

2.0

 

Vcc

V

TX Disable Assert Time

TASSERT

 

 

10

µs

 
TX Disable De-assert Time

TDEASSERT

 

 

1

ms

 
TX Fault Output Voltage – Low

TFaultL

0

 

0.5

V

Open collector compatible, 4.7 kΩ to 10 kΩ pull-up to Vcc (Host Supply Voltage)

TX Fault Output Voltage – High

TFaultH

2.0

 

Vcc+0.3

V



Receiver Specifications (-10°C < Tc < 85°C, 3.1V < Vcc < 3.5V)



Optical

Sensitivity

Sens

 

 

-17

dBm

Measured at 27-1 PRBS at BER 1E-12

Maximum Input Power

Pin

-3

 

 

dBm

Signal Detect – Asserted

Pa

-17

dBm

Transition: low to high

Signal Detect – De-Asserted

Pd

-30

dBm

Transition: high to low

Signal Detect – Hysteresis

 

1.0

 

dB

 
Wavelength of Operation

 

700

900

nm

 



Electrical

Differential Output Voltage

VOH – VOL

0.6

 

2.0

V

 
Output LOS Voltage – Low

VOL

0

 

0.5

V

Open collector compatible, 4.7 kΩ to 10 kΩ pull-up to Vcc (Host Supply Voltage)

Output LOS Voltage – High

VOH

2.0

 

Vcc+0.3

V

Note: Only connections with patch cords with PC or UPC connectors are supported.

ORDERING INFORMATION

Part number

Bit Rate (Gb/s)

1000 BASE

Distance (m)

Wavelength (nm)

Package

Temp. (°C)

Tx Power (dBm)

Rx Sens. (dBm)

RoHS Compliant

SFP-ETH-RT-M85-LC

1.25

SX

300 / 550*

850 VCSEL

SFP with DMI

-10 to 85

-9 to -3

-17

Yes

* 300 meter for 62.5/125 mm MM fiber; 550 meter for 50/125 mm MM Fiber.

Note: Only connections with patch cords with PC or UPC connectors are supported.

DOCUMENTS & DOWNLOADS

DATASHEETS

Small Form-factor Pluggable (SFP) Optical Module Cartridges (Ethernet)

The Small Form-factor Pluggable (SFP) optical module cartridges are small, hot-pluggable devices used to provide Ethernet fiber connectivity to IP-based products from either a Densité frame or Grass Valley/Telecast standalone fiber products. Multimode fiber links can be used for links of a few hundred meters, while single-mode fiberlinks can be used at distances up to 10 kilometer and over (dependent on SFP type) without degrading signal quality.

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