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FTR-1631-21 Datasheet(PDF) 5 Page - Finisar Corporation. |
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FTR-1631-21 Datasheet(HTML) 5 Page - Finisar Corporation. |
5 / 10 page FTR-1631-XX DWDM GBIC Preliminary Product Specification F i n i s a r © Finisar Corporation PRELIMINARY and Confidential Page 5 Rev J, August 2004 IV. High Speed Electrical Interface All high-speed PECL signals are AC coupled internally. Parameter Symbol Min Typ Max Units Notes/Conditions RX_LOS Assert Level -42 -36 dBm RX_LOS Deassert Level -34 -32 dBm RX_LOS Hysteresis 2 dB RX_LOS Assert Delay t_loss_on 300 µsec From detection of loss of signal to assertion of RX_LOS RX_LOS Negate Delay t_loss_off 150 µsec From detection of presence of signal to negation of RX_LOS TX_DISABLE Assert Time t_off 1.5 msec Rising edge of TX_DISABLE to fall of output signal below 10% of nominal TX_DISABLE Negate Time t_on 6.0 msec Falling edge of TX_DISABLE to rise of output signal above 90% of nominal. Time indicated is under steady-state temperature conditions. TX_DISABLE Reset Time t_reset 10 µsec TX_DISABLE HIGH before TX_DISABLE set LOW TX_FAULT Assert -0.1 0.1 nm TX_Fault will assert before the device is outside of specified wavelength range Table 4. Low Speed Signal Parameters Parameter Symbol Min Typ Max Units Notes/Conditions Data Input Voltage Vin 650 2000 mV PECL differential peak - peak Data Output Voltage Vout 370 2000 mV PECL differential peak - peak PECL rise/fall Tr,Tf 150 psec 20% -80% Differential Bit Error Rate BER 10 -12 PRBS 2 23 - 1 test data pattern Tx Input Impedance Zin 75 Ohm Rx Output Impedance Zout 75 Ohm Table 5. High Speed Electrical Interface |
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