HFCT-5953TL Avago Technologies US Inc., HFCT-5953TL Datasheet - Page 8

• Manufacturer Part Number: HFCT-5953TL
• Description: Fiber Optic Transmitters, Receivers, Transceivers OC12 IR 2x5 SFF LC
• Manufacturer: Avago Technologies US Inc.

Specifications of HFCT-5953TL

• Function: High performance, modules for serial optical data communication applications, designed for single mode fiber.
• Product: Transceiver
• Data Rate: 622 Mbps
• Wavelength: 1300 nm
• Maximum Rise Time: 1 ns, 0.5 ns
• Maximum Fall Time: 1 ns, 0.5 ns
• Maximum Output Current: 50 mA
• Operating Supply Voltage: 3.14 V to 3.47 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Package / Case: DIP-10 with Connector
• Optical Fiber Type: TX/RX
• Data Transfer Rate: 622Mbps
• Optical Rise Time: 1/0.5ns
• Optical Fall Time: 1/0.5ns
• Operating Temperature Classification: Commercial
• Peak Wavelength: 1356/1570nm
• Package Type: DIP With Connector
• Operating Supply Voltage (min): 3.14V
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.47V
• Output Current: 50mA
• Operating Temp Range: 0C to 70C
• Mounting: Snap Fit To Panel
• Pin Count: 10
• For Use With: Singlemode Glass
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 7 - Recommended Interface Circuit (HFCT-5954xxx)
8
Application Information
The Applications Engineering Group at Avago Tech-
nologies is available to assist you with technical under-
standing and design trade-offs associated with these
transceivers. You can contact them through your Avago
Technologies sales representative.
The following information is provided to answer some
of the most common questions about the use of the
parts.
Optical Power Budget and Link Penalties
The worst-case Optical Power Budget (OPB) in dB for a
fiber-optic link is determined by the difference between
the minimum transmitter output optical power (dBm
avg) and the lowest receiver sensitivity (dBm avg). This
OPB provides the necessary optical signal range to es-
tablish a working fiber-optic link. The OPB is allocated
for the fiber-optic cable length and the corresponding
link penalties. For proper link performance, all penalties
that affect the link performance must be accounted for
within the link optical power budget.
T
B
P
P
V
B
Note:
Note A: CIRCUIT ASSUMES OPEN EMITTER OUTPUT
Note B: CIRCUIT ASSUMES HIGH IMPENDANCE INTERNAL BIAS @ V
Note C: THE BIAS RESISTOR FOR VpdR SHOULD NOT EXCEED 200 OHM.
DIS
MON
MON
MON
CC
MON
T
R
X
X
RX (+3.3 V)
(LVTTL)
+
-
+
-
NOTE C
C1 = C2 = C3 = 10 nF or 100 nF
200 Ω
20 19 18 17 16 15 14 13 12 11
1
3 k
2
3
10 nF
4
5
6
V
CC
7
(+3.3 V)
See Figure 7a
8
9 10
V
130 Ω
130 Ω
82 Ω
CC
(+3.3 V)
CC
- 1.3 V.
82 Ω
130 Ω
130 Ω
C2
C1
100 nF
100 nF
100 nF
100 nF
Electrical and Mechanical Interface
Recommended Circuit
Figures 7 and 8 shows the recommended interface for
deploying the Avago Technologies transceivers in a +3.3
V system.
Data Line Interconnections
Avago Technologies’ HFCT-5953xxx/HFCT-5954xxx fi-
ber-optic transceivers are designed to couple to +3.3 V
PECL signals. The transmitter driver circuit regulates the
output optical power. The regulated light output will
maintain a constant output optical power provided the
data pattern is reasonably balanced in duty cycle. If the
data duty cycle has long, continuous state times (low
or high data duty cycle), then the output optical power
will gradually change its average output optical power
level to its preset value.
10 µF
10 µF
1 µH
1 µH
Z = 50 Ω
Z = 50 Ω
Z = 50 Ω
Z = 50 Ω
V
CC
(+3.3 V)
C3
BY THE HFCT-5954ATL/TL
THIS IS NOT REQUIRED
130 Ω
10 kW
V
CC
100 Ω
(+3.3 V)
130 Ω
TD-
TD+
RD+
RD-
SD
LVTTL
V
CC
V
(+3.3 V)
CC
(+3.3 V)
NOTE A
NOTE B