Delta Electronics SPBD-155E4J1RT manual Electrical Interface Characteristics, Txdisable, Txfault

SPBD-155E4J1RT

5. Electrical Interface Characteristics

Parameter		Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter
Total Supply Current		ICC			A	mA	Note (1)
Differential Data Input Swing		VDT	500		2400	mVp-p
Differential line input Impedance		RIN	80	100	120	Ohm
Data Input Voltage- High		VIH-VCC	-1.165		-0.880	V
Data Input Voltage- Low		VIL-VCC	-1.810		-1.475	V
Transmitter Disable Input-High		VDISH	2		VCC	V
Transmitter Disable Input-Low		VDISL	0		0.8	V
Transmitter Fault Output-High		VTXFH	2		VCC+0.3	V
Transmitter Fault Output-Low		VTXFL	0		0.8	V
Transmitter Fault Pull up Resistor		RTX_FAULT	4.7		10	kΩ	Note (2)
Receiver
Total Supply Current		ICC			B	mA	Note (1)
Differential Data Output Swing		VDR	400		2000	mVp-p	Note (3)
Data Output Voltage-High		VOH-VCC	-1.085		-0.880	V
Data Output Voltage-Low		VOL-VCC	-1.830		-1.555	V
LOS Output Voltage-High		VLOSH	2		VCC+0.3	V
LOS Output Voltage-Low		VLOSL	0		0.8	V
Receiver LOS Load		RRXLOS	4.7		10	kΩ	Note (2)
Note (1). A (TX)+ B (RX) = 250mA	(Not include termination circuit)

Note (2). Pull up to VCC on host Board.

Note (3). Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/ Deserializer.

6. Timing of Control and Status I/O

Parameter	Symbol	Min.	Max.	Unit	Unit Conditions
TX_DISABLE Assert	t_off		10		Time from rising edge of TX_DISABLE to
				∝sec	when the optical output falls below 10% of
Time
					nominal
TX_DISABLE	t_on		1	msec	Time from falling edge of TX_DISABLE to
					when the modulated optical output rises above
Negate Time
					90% of nominal
Time to initialize,	t_init		300	msec	From power on or negation of TX_Fault using
including reset of
TX_FAULT					TX_Disable.
TX_Fault Assert Time	t_fault		100	∝sec	Time from fault to TX_Fault on.
TX_DISABLE to	t_rest	10		∝sec	Time TX_Disbale must be held high to reset
reset					TX_Fault
LOS Assert Time	t_loss_on		100	∝sec	Time from LOS state to Rx LOS assert
LOS Deassert Time	t_loss_off		100	∝sec	Time from non-LOS state to Rx LOS deassert
Serial ID Clock Rate	f_serial_clock		100	kHz
				4	Revision: S1
					09/20/2006
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