8

Figure 1. Transmitter optical eye diagram mask.

Figure 2. Pin-out.

Table 1. Pinout Table

Pin

Symbol

Functional Description

Mounting Pins

The mounting pins are provided for transceiver mechanical attachment to the circuit board. They are

embedded in the nonconductive plastic housing and are not connected to the transceiver internal circuit,

nor is there a guaranteed connection to the metallized housing in the EM and FM versions. They should be

soldered into plated-through holes on the printed circuit board.

1

Receiver Signal Ground

2

RD+

Receiver Data Out

AC coupled – PECL compatible.

3

RD-

Receiver Data Out Bar

AC coupled – PECL compatible.

4

SD

Signal Detect

Signal Detect is a single-ended TTL output. If Signal Detect output is not used, leave it open-circuited.

5

Receiver Power Supply

Provide +3.3 Vdc via the recommended receiver power supply filter circuit.

6

Transmitter Power Supply

Provide +3.3 Vdc via the recommended transmitter power supply filter circuit.

7

TD-

Transmitter Data In-Bar

AC coupled – PECL compatible. Internally terminated differentially with 100 Ω.

8

TD+

Transmitter Data In

AC coupled – PECL compatible. Internally terminated differentially with 100 Ω.

9

Transmitter Signal Ground

Directly connect this pin to the transmitter signal ground plane.

0.8

0.5

0.2

0

0.15

0.375

0.85

NORMALIZED TIME

-0.2

1.0

1.0

0

1.3

0.625

2 = RD+

3 = RD-

4 = SD

7 = TD-

8 = TD+

TOP VIEW

NIC

NIC

NIC = NO INTERNAL CONNECTION (MOUNTING PINS)

RX

TX