TOSHIBA TOTX195 Manual
Contents
1. AS iG TOTX 195 1A TOTX195 FIBER OPTIC TRANSMITTING MODULE TOTX195 FIBER OPTIC TRANSMITTING Unit mm MODULE FOR SIMPLEX DIGITAL SIGNAL TRANSMISSION 155403 Data rate DC to 10 Mb s NRZ code Transmission distance Up to 50 m TTL interface LED is driven by Differential circuit eee Pin connection 1 GND 2 Current limiting resistor of LED 3 Vcc 4 input 5 N C 6 N C 1 Maximum Ratings Ta 25 C Storage Temperature 40 to 85 Operating Temperature 40 to 85 Input Voltage 0 5 to Vcc 0 5 Soldering Temperature 260 Note 1 Note 1 Soldering time lt 3 s More than 1 mm apart from the package Handling precaution The LEDs used in this product contain GaAs Gallium Arsenide Care must be taken to protect the safety of people and the environment when scrapping or terminal processing 1 2001 08 10 TOSHIBA TOTX195 2 Recommended Operating Conditions Characteristics Spy Voto veers so os v eh Love pa Ven Tw P20 vee Low eve np Vag ae ee 3 Electrical and Optical Characteristics Ta 25 C Vcc 5 V Characteristics Symbol Test Condition baa at zn Rawal oo o fwr Termeno i a Resp TORKTOG oz oO m Using APF and TORX194 Pulse Width Distortion Pulse width 100 ns 30 30 ns Pulse cycle 200 ns CL 10 pF Fe pal Pove PR rim Raza woes ef 6 een ao Peak Emission Wavelength Low Level Input Current2. Note 2 LED is on when input signal is high level it is off when low level Note 3 All Plastic Fiber 980 1000 um with polished surface Note 4 Between input of TOTX195 and output of TORX194 Note 5 Measure with a standard optical fiber with fiber optic connectors Valued by peak 2 2001 08 10 TOSHIBA TOTX195 4 Example of Typical Characteristics Note 6 Pf Supply voltage Atw Supply voltage Ta 25 C R 1 2kQ Peak value Ta 25 C Pulse width 100 ns Pulse cycle 200 ns R 1 2k0 dB ns Variation of Fiber output power Variation of Pulse width distortion 4 75 5 0 5 25 4 75 5 0 5 25 Supply voltage V Supply voltage V Pulse width distortion Received optic power Ta 25 C Voc 5V Pulse width 100 ns Pulse cycle 200 ns APF lm TORX194 CL 10 pF Pulse width distortion ns 30 28 26 24 22 20 18 16 14 12 Received optic power dBm Note 6 There give characteristic examples and its values are not guaranteed 3 2001 08 10 TOSHIBA TOTX195 Pf Ambient temperature Voc 5V R 1 2kQ Peak value Variation of fiber output power dB 60 40 20 0 25 50 70 85 100 Ambient temperature C Atw Ambient temperature Veco 5V Pulse width 100 ns Pulse cycle 200 ns R 1 2kQ Variation of Pulse width distortion ns 60 40 20 0 25 50 70 85 100 Ambient temperature C Note 6 There give characteristic examples and its
3. ate the effects of flux In such a cases be sure to check the devices reliability Vibration and shock This module is plastic sealed and has its wire fixed by resin This structure is relatively resistant to vibration and shock In actual equipment there are sometime cases in which vibration shock or stress is applied to soldered parts or connected parts resulting in lines cut A care must be taken in the design of equipment which will be subject to high levels of vibration Attaching the fiber optic transmitting module Solder the fixed pins pins 4 and 5 of the fiber optic transmitting module TOTX195 to the printed circuit board in order to fix it to the board Solvent When using solvent for flux removal do not use a high acid or high alkali solvent Be careful not to pour solvent in to the optical connector ports If solvent is inadvertently poured in to them clean it off using cotton tips Protective cap When the TOTX195 is not in use attach the protective cap Supply voltage Use the supply voltage within the recommended operating condition Vcc 5 0 25 V Make sure that supply voltage does not exceed the maximum rating value of 7 V even for an instant Input voltage If a voltage exceeding the maximum rating value Vcc 0 5 V is applied to the transmitter input the internal IC may suffer damage If there is a possibility that excessive voltage due to surges may be added to the input terminal insert a protective ci
4. onment in which it is used as well as by the lifetime characteristics unique to the device type Thus when a light emitting device and its operating conditions determined Toshiba recommend that lifetime characteristics be checked Depending on the environment conditions Toshiba recommend that maintenance such as regular checks of the amount of optical output in accordance with the condition of operating environment Soldering Optical modules are comprised of internal semiconductor devices However in principle optical modules are optical components During soldering ensure that flux does not contact with the emitting surface or the detecting surface Also ensure that proper flux removal is conducted after soldering Some optical modules come with a protective cap The protective cap is used to avoid malfunction when the optical module is not in use Note that it is not dust or waterproof As mentioned before optical modules are optical components Thus in principle soldering where there may be flux residue and flux removal after soldering is not recommended Toshiba recommend that soldering be performed without the optical module mounted on the board Then after the board has been cleaned the optical module should be soldered on to the board manually If the optical module cannot be soldered manually use non halogen chlorine free flux and make sure without cleaning there is no residue such as chlorine This is one of the ways to elimin
5. rcuit Soldering condition Solder at 260 C or less for no more than three seconds Precautions when disposing of devices and packing materials When disposing devices and packing materials follow the procedures stipulated by local regulations in order to protect the environment against contamination Compound semiconductors such as GaAs are used as LED materials in this module When devices are disposed of worker safety and protection of the environment must be taken into account 6 2001 08 10 TOSHIBA TOTX195 12 Precautions during use Toshiba is continually working to improve the quality and the reliability of their products Nevertheless semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and their vulnerability to physical stress It is the responsibility of the buyer when utilizing Toshiba products to observe standards of safety and to avoid situations in which the malfunction or failure of a Toshiba product could cause loss of human life bodily injury or damage to property When developing equipment please ensure that Toshiba products are used within the specified operating ranges set forth in the most recent product specifications Also please keep in mind the precautions and conditions set forth in the Toshiba Semiconductor Reliability Handbook 7 2001 08 10 TOSHIBA TOTX195 RESTRICTIONS ON PRODUCT USE 000707EAC e TOSHIBA is continually working to improve the qualit
6. tion control instruments medical instruments all types of safety devices etc Unintended Usage of TOSHIBA products listed in this document shall be made at the customer s own risk Gallium arsenide GaAs is a substance used in the products described in this document GaAs dust and fumes are toxic Do not break cut or pulverize the product or use chemicals to dissolve them When disposing of the products follow the appropriate regulations Do not dispose of the products with other industrial waste or with domestic garbage The information contained herein is presented only as a guide for the applications of our products No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others e The information contained herein is subject to change without notice 8 2001 08 10
7. values are not guaranteed 4 2001 08 10 TOSHIBA 5 Application Circuit Fiber Optic Connector Insertion Side Soldered to PC board Soldered to PC board Input Vcc GND Bottom View Note 7 Select a resistor value as follows m Q 0 2 to 10 17 8 k 6 Applicable Optical Fiber with Fiber Optic Connectors TOCP100 00B TOCP155 00B TOCP100P OO0B TOCP155P 00B TOTX195 2001 08 10 TOSHIBA TOTX195 7 Precautions during use 1 2 3 4 5 6 7 8 9 10 1 Maximum rating The maximum ratings are the limit values which must not be exceeded during operation of device None of these rating value must not be exceeded If the maximum rating value is exceeded the characteristics of devices may never be restored properly In extreme cases the device may be permanently damages Lifetime of light emitters If an optical module is used for a long period of time degeneration in the characteristics will mostly be due to a lowering of the fiber output power Pf This is caused by the degradation of the optical output of the LEDs used as the light source The cause of degradation of the optical output of the LEDs may be defects in wafer crystallization or mold resin stress The detailed causes are however not clear The lifetime of light emitters is greatly influenced by the operating conditions and the envir
8. y and reliability of its products Nevertheless semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress It is the responsibility of the buyer when utilizing TOSHIBA products to comply with the standards of safety in making a safe design for the entire system and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life bodily injury or damage to property In developing your designs please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications Also please keep in mind the precautions and conditions set forth in the Handling Guide for Semiconductor Devices or TOSHIBA Semiconductor Reliability Handbook etc The TOSHIBA products listed in this document are intended for usage in general electronics applications computer personal equipment office equipment measuring equipment industrial robotics domestic appliances etc These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and or reliability or a malfunction or failure of which may cause loss of human life or bodily injury Unintended Usage Unintended Usage include atomic energy control instruments airplane or spaceship instruments transportation instruments traffic signal instruments combus
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TOSHIBA TOTX195 Manual