2

20Km Gigabit Ethernet SFP Transceiver

SP-GB-ELX

20550 Nordhoff St. • Chatsworth, CA 91311 • tel: 818.773.9044 • fax: 818.576.9486

9F, No 81, Shui Lee Rd. • Hsinchu, Taiwan, R.O.C. • tel: 886.3.5169222 • fax: 886.3.5169213

LUMNDS861-Aug0407

Rev A.4

LUMINENTOIC.COM

Parameter

Symbol

Min

Typical

Max

Unit

Input Differential Impedence

80

100

120

Ω

PECL Single Ended Data Input Swing

250

-

1200

mV

TxFault_Fault

2

-

V

TxFault_Normal

-

V

TxDisable_Disable

2

-

V

TxDisable_Enable

-

V

Transmitter Specifications (Electrical)

Parameter

Symbol

Min

Typical

Max

Unit

-

-26

-24

dBm

-3

0

-

dBm

Damage Threshold for Receiver

6

-

-

dBm

λ

1270

-

1355

nm

Maximum Reflectance of Receiver

RX_r

-

-

-12

dB

LOS Assert

-

-38

-

-

dBm

LOS De-Assert

-

-

-

-24

dBm

LOS Hysteresis

-

0.5

-

-

dB

d) Operational over 1200-1625nm range

Receiver Specifications (Optical)

Parameter

Symbol

Min

Typical

Max

Unit

PECL Single-Ended Data Output Swing

185

-

800

mV

Data Output Rise Time

-

-

260

ps

Data Output Fall Time

-

-

260

ps

Receiver Specifications (Electrical)

Parameter

Symbol

Min

Typical

Max

Unit

Tx Disable Negate Time

t_on

-

-

1

ms

Tx Disable Assert Time

t_off

-

-

10

µs

Time to Initialize, Including Reset of Tx Fault

t_init

-

-

300

ms

Tx Fault Assert Time

t_fault

-

-

100

µs

Tx Disable to Reset

t_reset

10

-

-

µs

LOS Assert Time

t_loss_on

-

-

100

µs

LOS De-assert Time

t_loss_off

-

-

100

µs

Serial ID Clock Rate

f_serial_clock

-

-

100

KHz

RX_LOS Voltage (high)

2

-

V

RX_LOS Voltage (low)

-

-

0.8

V

LOS Output Voltage-Fault

2

-

V

LOS Output Voltage-Normal

-

V

MOD_DEF (0:2)-High

2

-

V

MOD_DEF (0:2)-Low

-

V

Timing and Electrical

Timing and Electrical

Timing and Electrical