Delta Electronics SFBD-1250B4Q1R manual Pin Description, Tx/Rx Pin No Pin Name Description

SFBD-1250B4Q1R

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)
	4	O	RD(n)	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”.
	9	I	TD(p)	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
DELTA ELECTRONICS, INC.	www.deltaww.com