HFBR-53A3VEMZ Datasheet, PDF (8/13 Pages) AVAGO TECHNOLOGIES LIMITED – RoHS Compliant 3.3 V 1 x 9 Fiber Optic Transceivers for Fibre Channel

Table 1. Pinout Table
Pin Symbol
Mounting Pins
1 V_EER
2 RD+
3 RD-
4 SD
5 V_CCR
6 V_CCT
7 TD-
8 TD+
9 V_EET
Functional Description
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.
Receiver Signal Ground
Directly connect this pin to receiver signal ground plane. (For HFBR-53A5VM, V_EER = V_EET)
Receiver Data Out
AC coupled – PECL compatible.
Receiver Data Out Bar
AC coupled – PECL compatible.
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, V_OH, asserted.
Low input optical levels to the receiver result in a fault condition indicated by a logic “0” output V_OL, 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 V_CCR 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 V_CCT pin.
Transmitter Data In-Bar
AC coupled – PECL compatible. Internally terminated differentially with 100 Ω.
Transmitter Data In
AC coupled – PECL compatible. Internally terminated differentially with 100 Ω.
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 0.15 0.375
0.625 0.85 1.0
NORMALIZED TIME
Figure 1. Transmitter optical eye diagram mask.
1 = V_EER
2 = RD+
3 = RD-
4 = SD
5 = V_CCR
6 = V_CCT
7 = TD-
8 = TD+
9 = V_EET
NIC
RX
TX
NIC
TOP VIEW
NIC = NO INTERNAL CONNECTION (MOUNTING PINS)
Figure 2. Pin-out.
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