HFCT-5953TL Avago Technologies US Inc., HFCT-5953TL Datasheet
HFCT-5953TL
Specifications of HFCT-5953TL
Related parts for HFCT-5953TL
HFCT-5953TL Summary of contents
Page 1
... Multirate Operation (Part of the Avago Technologies METRAK family) Data Sheet Description The HFCT-5953xxx/HFCT-5954xxx SFF transceivers are high performance, cost effective modules for se- rial optical data communication applications specified at 622 Mbit/s for Intermediate Reach links. They are designed to allow multirate transmission at OC3 (155 Mbit/s) and OC12 (622 Mbit/s) providing OC12 SONET/ SDH compliance ...
Page 2
Functional Description Receiver Section Design The receiver section contains an InGaAs/InP photo detector and a preamplifier mounted in an optical subassembly. This optical subassembly is coupled to a postamp/decision circuit. The postamplifier is ac coupled to the preamplifier as illustrated in Figure 1. The coupling capacitors are large enough to pass the SONET/SDH test pattern at 622 MBd without ...
Page 3
Functional Description Transmitter Section Design The transmitter section uses a Fabry Perot (FP) laser as its optical source, see Figure 2. The package has been designed to be compliant with IEC 825 eye safety re- quirements under any single fault condition. The opti- cal output is controlled by a custom IC that detects the laser output via the monitor photodiode. This IC pro- vides both dc and ac current drive to the laser to ensure correct ...
Page 4
Package The overall package concept for the Avago Technolo- gies transceiver consists of four basic elements; two optical subassemblies and two electrical subassemblies. They are housed as illustrated in the block diagram in Figure 3. The package outline drawing and pin out are shown in Figures 4, 5 and 6. The details of this package ...
Page 5
... FRONT VIEW G MODULE - NO EMI NOSE SHIELD DIMENSIONS IN MILLIMETERS (INCHES) DIMENSIONS SHOWN ARE NOMINAL. ALL DIMENSIONS MEET THE MAXIMUM PACKAGE OUTLINE DRAWING IN THE SFF MSA. Figure 4 - HFCT-5953xxx/HFCT-5954xxx Package Outline Drawing ( Design shown TOP VIEW 48.5 ± 0.2 (1.91 ± 0.008) Ø ...
Page 6
... Connection Diagram (HFCT-5954xxx Mounting Studs/ Package Grounding Tabs o o PHOTO DETECTOR BIAS 1 20 LASER DIODE OPTICAL POWER MONITOR - POSITIVE END Top o o RECEIVER SIGNAL GROUND 2 19 LASER DIODE OPTICAL POWER MONITOR - NEGATIVE END o o RECEIVER SIGNAL GROUND 3 18 LASER DIODE BIAS CURRENT MONITOR - POSITIVE END ...
Page 7
... Connection Diagram (HFCT-5953xxx) RX Package Top Grounding Tabs View o RECEIVER SIGNAL GROUND 1 o RECEIVER POWER SUPPLY 2 o SIGNAL DETECT 3 o RECEIVER DATA OUT BAR 4 o RECEIVER DATA OUT 5 Figure 6 - Pin Out Diagram (Top View) Pin Descriptions: Pin 1 Receiver Signal Ground V RX: EE Directly connect this pin to the receiver ground plane. ...
Page 8
... 100 nF 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. Figure 7 - Recommended Interface Circuit (HFCT-5954xxx) 8 Electrical and Mechanical Interface Recommended Circuit Figures 7 and 8 shows the recommended interface for deploying the Avago Technologies transceivers ...
Page 9
... As for the receiver section internally ac-coupled between the preamplifier and the postamplifier stages. The actual Data and Data-bar outputs of the postampli- fier are dc-coupled to their respective output pins (pins 9 and 10 on the HFCT-5953xxx and pins 14 and 15 on the HFCT-5954xxx). The two data outputs of the re- ceiver should be terminated with identical load circuits to avoid unnecessarily large ac currents in V puts are loaded identically the ac current is largely nulled. 9 ...
Page 10
... Eye Safety Circuit For an optical transmitter device to be eye-safe in the event of a single fault failure, the transmitter must ei- ther maintain eye-safe operation or be disabled. The HFCT-5953xxx/HFCT-5954xxx is intrinsically eye safe and does not require shut down circuitry. Signal Detect The Signal Detect circuit provides a deasserted output signal when the optical link is broken (or when the re- mote transmitter is OFF). The Signal Detect threshold ...
Page 11
... Interference (EMI) enables the designer to pass a governmental agency’s EMI regulatory standard and more importantly, it reduces the possibility of interference to neighboring equipment. Avago Technologies has de- signed the HFCT-5953xxx/HFCT-5954xxx to provide excel- lent EMI performance. The EMI performance of a chassis is dependent on physical design and features which help improve EMI suppression. Avago Technologies encour- ages using standard RF suppression practices and avoiding poorly EMI-sealed enclosures ...
Page 12
Recommended Cleaning/ Degreasing Chemicals Alcohols: methyl, isopropyl, isobutyl. Aliphatics: hexane, heptane Other: naphtha. Do not use partially halogenated hydrocarbons such as 1,1.1 trichloroethane, ketones such as MEK, acetone, chloroform, ethyl acetate, methylene dichloride, phe- nol, methylene chloride, or N-methylpyrolldone. Also, Avago Technologies does not recommend ...
Page 13
... There are no user serviceable parts nor any main HFCT-5954xxx. All adjustments are made at the factory before shipment to our customers. Tam- pering with or modifying the performance of the HFCT-5953xxx/HFCT-5954xxx w ill r esult oided p roduct warranty. It may also result in improper operation of the HFCT-5953xxx/HFCT-5954xxx circuitry, and possible overstress of the laser source. Device degradation or product failure may result. ...
Page 14
... Parameter Storage Temperature Supply Voltage Data Input Voltage Data Output Current Relative Humidity Recommended Multirate Operating Conditions Parameter Ambient Operating Temperature HFCT-5953TL/TG/HFCT-5954TL/TG HFCT-5953ATL/ATG/HFCT-5954ATL/ATG Supply Voltage Power Supply Rejection Transmitter Differential Input Voltage Data Output Load TTL Signal Detect Output Current - Low TTL Signal Detect Output Current - High Transmit Disable Input Voltage - Low Transmit Disable Input Voltage - High Transmit Disable Assert Time Transmit Disable Deassert Time ...
Page 15
... HFCT-5953ATL/ATG/HFCT-5954ATL/ATG: T Parameter Supply Current Power Dissipation Data Input Voltage Swing (single-ended) Transmitter Differential Data Input Current - Low I Transmitter Differential Data Input Current - High I Laser Diode Bias Monitor Voltage Power Monitor Voltage Receiver Electrical Characteristics for multirate operations at OC3 (155 Mbit/s) and OC12 (622 Mbit/s) HFCT-5953TL/TG/HFCT-5954TL/TG: T HFCT-5953ATL/ATG/HFCT-5954ATL/ATG: T Parameter Supply Current Power Dissipation Data Output Voltage Swing (single-ended) Data Output Rise Time Data Output Fall Time Signal Detect Output Voltage - Low Signal Detect Output Voltage - High Signal Detect Assert Time (OFF to ON) ...
Page 16
... Parameter Output Optical Power 9 µm SMF Center Wavelength Spectral Width - rms Optical Rise Time Optical Fall Time Extinction Ratio Output Optical Eye Back Reflection Sensitivity Jitter Generation Receiver Optical Characteristics for multirate operations at OC3 (155 Mbit/s) and OC12 (622 Mbit/s) HFCT-5953TL/TG/HFCT-5954TL/TG: T HFCT-5953ATL/ATG/HFCT-5954ATL/ATG: T Parameter Receiver Sensitivity Receiver Overload Input Operating Wavelength Signal Detect - Asserted Signal Detect - Deasserted Signal Detect - Hysteresis Optical Return Loss, ORL Notes: 1. The output power is coupled into single-mode fiber. Minimum output optical level is at end of life. ...
Page 17
... Please contact your Avago Technologies representative for further information if required. Ordering Information Temperature range 0°C to +70°C HFCT-5953TL footprint with EMI nose shield HFCT-5954TL footprint with EMI nose shield HFCT-5953TG footprint without EMI nose shield HFCT-5954TG footprint without EMI nose shield Temperature range -40° ...