HFCT-721XPD Avago Technologies US Inc., HFCT-721XPD Datasheet - Page 3

• Manufacturer Part Number: HFCT-721XPD
• Description: Fiber Optic Transceiver,Module
• Manufacturer: Avago Technologies US Inc.

Specifications of HFCT-721XPD

• Data Rate: 10.52Gbps
• Wavelength: 1310nm
• Applications: General Purpose
• Voltage - Supply: 3.135 V ~ 3.465 V
• Connector Type: LC Duplex
• Mounting Type: Panel Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Receiver Section
The receiver section i ncludes a PIN detector w ith a mplifica-
tion quantization signal conditioner circuits. (see Figure
1) Optical connection to the receiver is provided via a LC
optical connector.
RX_LOS
The receiver section contains a loss of signal (RX_LOS)
circuit to indicate when the optical input signal power
is insufficient for reliable signal detection. A high signal
indicates loss of modulated signal, indicating link failure
such as a broken fiber or nonfunctional remote transmit-
ter. RX_LOS can also be monitored via the two-wire serial
interface (byte 110, bit 1).

Figure 2. MSA recommended power supply filter
Optional
Host +1.8 V
Optional
Host -5.2 V
Optional
Host +5 V
Host +3.3 V
0.1 µF
0.1 µF
0.1 µF
0.1 µF
4.7 µH
4.7 µH
4.7 µH
4.7 µH
GND
22 µF
22 µF
22 µF
22 µF
Host Board
0.1 µF
0.1 µF
0.1 µF
0.1 µF
V
V
V
V
CC
CC
CC
EE
5
3
5
2
XFP Module
Functional Data I/O
Avago T echnologies’ HFCT-721XPD fiber-optic transceiver
is designed to accept industry standard electrical input
differential signals. The transceiver provides ac-coupled,
internally terminated data input and output interfaces.
Bias resistors and coupling capacitors have been included
within the module to reduce the number of components
required on the customer’s board.
Electrical Pinout
Figure 4. Host PCB XFP Pinout Top View
TOWARD
ASIC
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
GND
RD-
RD+
GND
VCC2
P_DOWN/RST
VCC2
GND
REFCLK+
REFCLK-
GND
GND
TD-
TD+
GND
INTERRUPT
GND
RX_LOS
MOD_NR
MOD_ABS
SDA
SCL
VCC3
VCC3
GND
VCC5
TX_DIS
MOD_DESEL
VEE5
GND
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TOWARD
BEZEL