HFBR-53A5VEM 查看數據表（PDF） - HP => Agilent Technologies

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HFBR-53A5VEM

3.3 V 1 x 9 Fiber Optic Transceivers for Gigabit Ethernet Low Voltage

HP => Agilent Technologies 

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

VEER

2

RD+

Receiver Signal Ground

Directly connect this pin to receiver signal ground plane. (For HFBR-53A5VM, VEER = VEET)

Receiver Data Out

AC coupled – PECL compatible.

3

RD–

Receiver Data Out Bar

AC coupled – PECL compatible.

4

SD

5

VCCR

6

VCCT

7

TD–

Signal Detect

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

open-circuited.

Normal optical input levels to the receiver result in a logic “1” output, VOH, asserted.

Low input optical levels to the receiver result in a fault condition indicated by a logic “0” output

VOL, deasserted.

Receiver Power Supply

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

Locate the power supply filter circuit as close as possible to the VCCR pin.

Transmitter Power Supply

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

Locate the power supply filter circuit as close as possible to the VCCT pin.

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

VEET

Transmitter Signal Ground

Directly connect this pin to the transmitter signal ground plane.

1.3

1.0

0.8

0.5

0.2

0

-0.2

0 0.22 0.375

0.625 0.78 1.0

NORMALIZED TIME

Figure 1. Transmitter Optical Eye Diagram Mask.

1 = VEER

2 = RD+

3 = RD-

4 = SD

5 = VCCR

6 = VCCT

7 = TD-

8 = TD+

9 = VEET

NIC

RX

TX

NIC

TOP VIEW

NIC = NO INTERNAL CONNECTION (MOUNTING PINS)

Figure 2. Pin-Out.

8

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