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PRODUCT DATA SHEET
SFF TRANSCEIVER
for SONET/SDH
HTR6545 Series
for OC-48 SR (up to 2km)
http://www.hitachi-cable.co.jp/
Ref. No.:TE03-00-58-9039B Mar. `03
Page 1 of 9
Features l SONET OC-48 SR (2.5Gbit/s, 2km) compliant. l Fully comply with industry standard 2x10pin Small Form Factor transceiver with LD, PD monitor functions, without clock recovery. l LC duplex receptacle. l +3.3V single power supply. l Low power consumption (0.5W(typ.)). 1. General This document specifies the characteristics of the Small Form Factor optical transceiver (Type:HTR6545) with LC duplex receptacle for an OC-48 Short Reach interface (SR, up to 2km). 2. Function This transceiver is powered from a single +3.3V power supply and operated at a data rate of 2488.32Mbps(NRZ). Optical output power is held constant by automatic power control over the specified operating temperature and voltage ranges. Electrical data inputs and outputs have CML logic level. The optical output is disabled by a TTL logic level input for that purpose. A signal Detect (SD) output is provided to indicate the presence of an incoming optical signal. SD is a TTL compliant signal. Received optical power, laser bias current and laser monitor current can be monitored using pins for that purpose. Dimensions and pin assignment fully comply with MSA (Multi Source Agreement) for 2 by 10 type optical transceiver. 3. Absolute Maximum Ratings Stresses in excess of the ratings listed in Table 1 can cause permanent damage to the device and affect device reliability. Functional operation of the device is not implied at any condition in excess of those given in the operating specification. Table 1. Absolute Maximum Ratings
Parameter Supply Voltage Data Input Voltage Operating Ambient Temperature Storage Case Temperature Lead Soldering Temperature/Time
Operating Relative Humidity (non-condensing)
Symbol VCC VIN TA Tstg HA
Min. 0 VEE 0 -40 5
Max. 4.0 VCC +0.3 70 85 250/10 85
Unit V V deg-C deg-C deg-C / s %
Page 2 of 9
4. Optical and Electrical Characteristics of Transmitter Portion Optical and electrical characteristics of transmitter portion are shown in Table 2. Unless otherwise stated, minimum and maximum values are specified over the operating ambient temperature, and humidity ranges, DC power supply voltage range, from beginning to end of life, using 223-1 pseudo random bit stream with a 50% duty factor. The logic sense for the DATA input is such that a logic "1"(High) corresponds to the maximum level of an amplitude modulated light source (Light on), while a logic "0"(Low) corresponds to a minimum level of an amplitude modulated light source (Light off). Table 2. Transmitter Optical and Electrical Characteristics
Parameter Optical Output Power Center Wavelength Spectral Width(RMS) SONET Eye Mask Extinction Ratio DC Power Supply Voltage DC Power Supply Current Data Input Voltage Input V Range Common Mode Input V Diff'l Input Swing Diff'l Input Impedance Tx Disable Voltage Tx Enable Voltage VIA, VIB VCI VID SWING Z ID VD VEN VCC-1.2 300 85 Vcc-1.3 VEE VCC-0.2 100 VCC +0.2 1200 115 Vcc VEE +0.8 V V mVp-p ohm V V Symbol Po Vcc Icc Min -10 1266 8.2 3.135 Typ 3.3 Max -3 1360 4.0 3.465 100 Unit dBm nm nm dB V mA
compliant with GR253 spec.
Page 3 of 9
5. Optical and Electrical Characteristics of Receiver Portion Optical and electrical characteristics of receiver portion are shown in Table 3. Unless otherwise stated, minimum and maximum values are specified over the operating ambient temperature, and humidity ranges, DC power supply voltage range and wavelength range, from beginning to end of life, using a 2 23 -1 pseudo random bit stream with a 50% duty factor. Table 3. Receiver Optical and Electrical Characteristics
Parameter Optical input Power (Average) a Signal Detect Threshold: Decreasing Light Input Increasing Light Input Hysteresis DC Power Supply Voltage DC Power Supply Current Data Output Voltage: b Output V Diff'l Output Swing Output Offset V Diff'l Output Impedance Output Transition Time
c
Symbol PIN SDTD SDTI SDTH Vcc Icc
Min -18 -28 0.5 3.135 -
Typ -
Max -3 -18 -18 6 3.465 80
Unit dBm dBm dBm dB V mA
VOA , VOB VOD SWING VCO VOD to VOL VOH SDRTD SDRTI
VCC-0.5 640 85 -
800 VCC-0.2 100 -
VCC 1000 115 150
V mVp-p V ohm ps
Signal Detect Output Voltage: d Low High Signal Detect Response Time: Decreasing Light Input Increasing Light Input 300 100 us us Vcc-0.9 0.4 V V
a. b. c. d.
At a BER of 1x10 and an extinction ratio of 8.2dB CML compatible, R L is 50 ohm to V CC . Between 20% and 80% (50% duty cycle) TTL compatible.
-10
Page 4 of 9
6. Physical Design The outline for transceiver package is shown in Figure 1.
Top View
0.433 max 11.00 0.386 max 0.010 9.80 0.254 0.125 3.175
1.474 max 37.44
Side View
m ounting studs diameter: 1.0mm 1
0.533 max 13.54 0.512 13.00
0.018 (pin diameter) 0.457
10
0.400 10.16
Bottom View 20 11
0.299 7.59
0.350 8.89
0.070 0.190 1.778 4.826
unit: inch mm
Unless otherwise stated, typical values are shown
Figure 1. Package Outline
Page 5 of 9
7. PINOUT Pinout is shown in Table 4. The mounting studs are for mechanical attachment to the circuit board and are not connected to internal circuit. Table 4. Pin Designations Name
Received Power Monitor (PD bias / APD monitor) Receiver Ground Receiver Ground No Internal Connection No Internal Connection Receiver Ground Receiver VCC(+3.3V) Signal Detect(TTL) Received DATA(CML) Received DATA(CML)
Symbol RMON RGND RGND NC NC RGND RVCC SD DO DO
Pin 1 2 3 4 5 6 7 8 9 10
Pin 20 19 18 17 16 15 14 13 12 11
Symbol PMON+ PMONBMON+ BMONTGND DI DI TD TGND TVCC
Name
LD Power Monitor(positive) LD Power Monitor(Negative) LD Bias Monitor(positive) LD Bias Monitor(Negative) Transmitter Ground Transmit DATA(CML) Transmit DATA(CML) Transmitter Disable(TTL) Transmitter Ground Transmitter VCC(+3.3V)
Pin 17 to Pin20 are outputs of laser monitoring function. These pins should be connected to high impedance voltage sensing circuit. Internal circuit is shown in Figure 2. If these function are not used, the pins should be open.
Vcc
Monitor PD laser
3k BMON+ Laser Driver 200 3k 10 3k BMONPMON+
3k bias current
PMON-
Figure 2. Equivalent internal circuit of PMON,BMON
Page 6 of 9
Pin 1 (RMON) could be used for received power monitoring. Equivalent internal circuit of RMON is shown in Figure 3. RMON should be connected to VCC Via sensing resistor: Rs (Rs is recommended less than 150ohm.). Typical response coefficient of the PD is 0.85 A/W. If this function is not used, connect this pin to VCC directly.
Vcc Rs RMON PD
Preamplifier
Figure 3. Equivalent internal Circuit of RMON
8. Inspection Inspection items are as follows: (1) Appearance (2) Dimensions (3) Optical output power (4) Optical waveform (5) Optical input power a) Average Sensitivity b) Signal Detect / Decreasing Light Input c) Signal Detect / Increasing Light Input (6) Power supply current 9. Packing The optical transceiver shall be packed in sturdy carton box(es) when shipping.
Page 7 of 9
10. Caution
(1) Do not stare into optical output port although this product is designed to meet the class 1 laser regulation. (2) The housing of the transceiver is possible to crack or dissolve against the particular chemicals. Although we recommend to use the aqueous fluid in the cleaning, the below chemicals are checked not to affect to the housing. the cleaning fluid in advance. / methyl alcohol, ethyl alcohol, butyl alcohol, isopropyl alcohol, hexane, cyclohexane, naphtha, tetrachloroethylene, propylene glycol, < Do not use : Chemicals which are checked to crack or dissolve> / trichloroethylene, trichloroethane, benzen, methyl ethyl ketone, chloroform, toluene, acetone, phenol, ethyl acetate, methylene di chloride, isophtalic acid dimethyl ester
(3) Optical connectors should be cleaned completely by proper cleaning process before insertion to optical receptacles of the transceiver to avoid contamination inside the optical receptacle.
Pay attention in the
solder flux and cleaning process. We recommend checking the appropriateness of
The contamination may cause serious degradation of
transmission performance. Using forced nitrogen and some kind of cleaning stick ("CLETOP, stick type" for LC/MU connector supplied by NTT international is recommended) should be used if the receptacle get contaminated by miss-treating optical connectors.
Page 8 of 9
11. Recommended Circuit Recommended decoupling and termination for HTR6545 is illustrated in Figure 4 . This recommendation will provide a good performance of the optical transceiver.
OPT OPT IN OUT
VCC(filtered) Top View (For received power monitoring) SD(TTL) 1 10uH 1uF 50 ohm microstrip line DOUT (CML) 50 ohm microstrip line DIN (CML) TD(TTL) 1uF 10uH VCC(+3.3V) 20 (For laser power monitoring)
10
11
Figure 4. Recommended decoupling and termination Remark : HTR6545 has input termination resistors (50 ohms to Vcc) inside the package. If AC coupling is needed, place bias resistors outside the package to prevent the input signal voltage from exceeding Vcc.
Vcc 50 ohm DI DI 400mVp-p (800mV(differential)) 500 - 750 ohm
= MEMO =
= Notice =
- All information contained in this document is subject to change without notice. - No responsibility is assumed by Hitachi Cable, Ltd. For its use nor for any infringements of third parties, which may result from its use. - Products described in this document are not intended for use in implantation or other life support applications where malfunction may result in injury or death to persons. - Customer must contact Hitachi Cable, Ltd. to obtain the latest specification to verify, before placing any order, that the information contained herein is current.
http://www.hitachi-cable.co.jp/
Hitachi Cable America, Inc.
http://www.hitachi-cable.com/
Ref. No.:TE03-00-58-9039B Mar. `03

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