Delta Electronics SFBD-1250A4Q1R Electrical Interface Characteristics, Pin Description, Receiver

SFBD-1250A4Q1R

5. Electrical Interface Characteristics

Parameter		Symbol	Min.	Typ.	Max.	Unit	Note
Transmitter
Total Supply Current		ICC			A	mA	Note (1)
Differential line input Impedance		RIN	90	100	110	Ohm
Differential Data Input Swing		VDT	400		1600	mVp-p	Note (2)
Transmitter Disable Input-High		VDISH	2		VCC	V	LVTTL
Transmitter Disable Input-Low		VDISL	0		0.8	V
Receiver
Total Supply Current		ICC			B	mA	Note (1)
Differential Data Output Swing		VDR	400	800	1200	mVp-p	Note (2)
Signal Detect Output Voltage-High		VLOSH	2		Vcc+0.3	V	Note (3)
Signal Detect Output Voltage-Low		VLOSL	0		0.8	V
Note (1). A (TX)+ B (RX) = 300mA	(Not include termination circuit)

Note (2). Internally AC coupled, but requires a 100Ohm differential termination at or internal to Serializer/ Deserializer.

Note (3). LVTTL logic output, internal 4.7K~10K Ohm pull-up resistor. External load on host board is unnecessary.

6. Pin Description

Tx/Rx	Pin No.	I/O	Pin Name	Description
	1		VeeR	Receiver Ground
	2		VccR	+3.3V Receiver Power Supply
Rx	3	O	SD	Normal Optical Input indicated by logic “High”, and No Optical
				Input indicated by logic “Low”. (LVTTL)
			RD(n)
	4	O		Inverted Receiver Data Output (AC-Coupled CML output)
	5	O	RD(p)	Non-Inverted Receiver Data Output (AC-Coupled CML output)
	6		VccT	+3.3V Transmitter Power Supply
	7		VeeT	Transmitter Ground
Tx	8	I	Tx_Dis	LVTTL Logic “High” to Disable Transmitter,	and Enable
				Transmitter by Logic “Low”.
			TD(p)
	9	I		Non-Inverted Transmitter Data Input (AC-Coupled LVPECL input)
	10	I	TD(n)	Inverted Transmitter Data Input (AC-Coupled LVPECL input)
			MS	Mounting studs/ connect this pin to Chassis ground
Note (1). EMI shielding lead must be connected to Signal ground
				MS
				Bottom View
				MS
				4	Revision: S0
					04/12/2007
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