6

2.5 GB/S CWDM SFP TRANSCEIVER

Timing of Status and Control Input/Output

Parameter

Symbol

Condition

Specification

TX_DISABLE assert time

t_off

Time from rising edge of TX_DISABLE to when the

Maximum 10 µs

output optical power falls below 10% of nominal

TX_DISABLE deassert time

t_on

Time from falling edge of TX_DISABLE to when the

Maximum 1 ms

output optical power rises above 90% of nominal

Time to initialize

t_init

Upon power up or negation of TX_FAULT due to TX_DISABLE

Maximum 300 ms

TX_FAULT assert time

t_fault

Time from a fault condition to TX_FAULT assertion

Maximum 100 µs

TX_DISABLE for reset

t_reset

Time TX_DISABLE must be held HIGH to reset TX_FAULT

Minimum

10 µs

LOS assert time

t_loss_on

Time from loss of signal to assertion of LOS

Maximum 100 µs

LOS deassert time

t_loss_off

Time from non-loss condition to LOS deassertion

Maximum 100 µs

2-wire serial clock rate

f_serial_clock

-

Maximum 100 kHz

Power Supply Voltage

Parameter

Short Haul (40 km, PIN)

Long Haul (80 km, APD)

Supply voltage

Minimum

3.1 V

3.1 V

Typical

3.3 V

3.3 V

Maximum

3.5 V

3.5 V

Typical

275 mA

285 mA

Maximum

320 mA

350 mA

1. Applies to hardware revision 2. Does not include output termination resistor current.