Datasheet

Pin Descriptions

Pin

Function

Name/Description

Note

1

Transmitter Ground (Common with Receiver Ground)

1

2

Transmitter Fault

2

3

Transmitter Disable. Laser output disabled on high or open.

3

4

SDA

2-wire Serial Interface Data Line

4

5

SCL

2-wire Serial Interface Clock Line

4

6

MOD_ABS

Module Absent. Grounded within the module.

4

7

RS0

No connection required

8

RX_LOS

Loss of Signal indication. Logic 0 indicates normal operation.

5

9

RS1

No connection required

10

Receiver Ground (Common with Transmitter Ground)

1

11

Receiver Ground (Common with Transmitter Ground)

1

12

RD-

Receiver Inverted DATA out. AC Coupled.

13

RD+

Receiver Non-inverted DATA out. AC Coupled.

14

Receiver Ground (Common with Transmitter Ground)

1

15

Receiver Power Supply

16

Transmitter Power Supply

17

Transmitter Ground (Common with Receiver Ground)

1

18

TD+

Transmitter Non-Inverted DATA in. AC Coupled.

19

TD-

Transmitter Inverted DATA in. AC Coupled.

20

Transmitter Ground (Common with Receiver Ground)

1

Notes:

1.

Circuit ground is internally isolated from chassis ground.

2.

intended for use. Pull up voltage should be between 2.0V to Vcc + 0.3V. A high output indicates a transmitter fault caused

by either the TX bias current or the TX output power exceeding the preset alarm thresholds. A low output indicates normal

operation. In the low state, the output is pulled to <0.8V.

3.

Laser output disabled on TDIS >2.0V or open, enabled on TDIS <0.8V.

4.

Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. MOD_ABS pulls line low to indicate

module is plugged in.

5.

LOS is open collector output. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. Logic

0 indicates normal operation; logic 1 indicates loss of signal.

VeeT

VeeT

VeeR

VeeR

TD-

TD+

RD+

RD-

VccT

VccR

VeeT

VeeR

TX_Fault

SDA

SCL

MOD_ABS

RS0

RX_LOS

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

Towards

TX_Disable

RS1

Towards

Bezel

ASIC

Diagram of Host Board Connector Block Pin Numbers and Names

2