FWLF1621P2Txx SFP Product Specification – November 2007

F i n i s a r

© Finisar Corporation November 2007 Rev.A Preliminary and Confidential

Page 4

IV.

Low Speed Signals

Parameter

Symbol

Min

Typ

Max

Units Notes/Conditions

RX_LOS Assert Level

-42

-36

dBm

RX_LOS Deassert Level

-34

-30

dBm

RX_LOS Hysteresis

0.5

2

dB

RX_LOS Assert Delay

t_loss_on

100

µsec

From detection of loss of signal

to assertion of RX_LOS

RX_LOS Negate Delay

t_loss_off

100

µsec

From detection of presence of

signal to negation of RX_LOS

TX_DISABLE Assert Time

t_off

10

µsec

Rising edge of TX_DISABLE to

fall of output signal below 10%

of nominal

TX_DISABLE Negate Time

t_on

1000

µsec

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

100

µsec

From fault to assertion of

TX_FAULT

Initialization Time

300

µsec

From power on to negation of

TX_FAULT using

TX_DISABLE