Delta Electronics OPEP-33-A4K3R Pin Description, Bottom View, BiasCNT Data Input, Optical Output

OPEP-33-A4K3R

VccT	BiasCNT	Data Input	Optical Output
VccT < 3.1V	X	X	OFF
VccT > 3.1V	Low	X	OFF
	High	No	Other
		Yes	Laser bias and modulation signal output

X = Don’t care

Other = Less than +7.5dBm (peak)

High = Logic high level, Low = logic low level

No = No Data Input, Yes = Data Input,

OFF = Optical Power is less than –45dBm

BiasCNT

Data Input

Optical Output	Within 15% of steady state
	Ton	Toff

H

L

7. 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
Tx	7		VeeT	Transmitter Ground
	8	I	BiasCNT	Positive pulse which control the ONU burst mode operation
	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

MS

Bottom View

MS

5	Revision: S1
	03/12/2007
DELTA ELECTRONICS, INC.	www.deltaww.com