TOTX173A(F) - TOSHIBA - Datasheet.Live

TOTX173A(F)

2007-03-08

FIBER OPTIC TRANSMITTING MODULE

TOTX173A(F)

FIBER OPTIC TRANSMITTING

MODULE FOR DIGITAL AUDIO

z Conform to JEITA Standard CP−1201

(For Digital Audio Interfaces including

Fiber Optic inter−connections).

z TTL Interface

z LED is driven by differential circuit.

z 650 nm LED

z ＲｏＨＳ Compliant

1. Absolute Maximum Ratings (Ta = 25°C)

Characteristics Symbol Rating Unit

Storage Temperature Tstg −40 to 70 °C

Operating Temperature Topr −20 to 70 °C

Supply Voltage VCC −0.5 to 7 V

Input Voltage VIN −0.5 to VCC + 0.5 V

Soldering Temperature Tsol 260 (Note 1) °C

Note 1: Soldering time ≤ 10 s (More than 1 mm apart from the package).

2. Operating Ranges

Characteristics Symbol Min Typ. Max Unit

Supply Voltage VCC 4.75 5.0 5.25 V

High Level Input Voltage VIH 2.0 ― V

CC V

Low Level Input Voltage VIL 0 ― 0.8 V

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.

Unit: mm

ＨＯＴ－００１４

TOTX173A(F)

2007-03-08

3. Electrical and Optical Characteristics (Ta = 25°C, VCC = 5 V)

Characteristics Symbol Test Condition Min Typ. Max Unit

Data Rate NRZ Code (Note 2) DC ― 6 Mb / s

Transmission Distance Using APF(Note 3)

and TORX173(F) 0.2 ― 10 m

Pulse Width Distortion (Note 4) ∆tw

Pulse Width 165 ns

Pulse cycle 330 ns, CL = 10 pF

Using TORX173(F)

−20 ― 20 ns

Fiber Output Power Pf APF 1 m, R = 8.2 kΩ (Note 5) −21 ― −15 dBm

Peak Emission Wavelength λp ― 650 ― nm

Current Consumption ICC R = 8.2 kΩ ― 8 20 mA

High Level Input Voltage VIH 2.0 ― ― V

Low Level Input Voltage VIL ― ― 0.8 V

High Level Input Current IIH ― ― 20 µA

Low Level Input Current IIL ― ― −0.4 mA

Note 2: LED is on when input signal is high level, it is off when low level.

For data rate > 3 Mb / s, the duty factor must be kept 25 to 75%.

Note 3: All Plastic Fiber (980 / 1000 µm).

Note 4: Between input of TOTX173A(F) and output of a fiber optic receiving module TORX173(F).

Note 5: Measure with a standard optical fiber with fiber optic connectors.

4. Application Circuit

5. Precautions during use

(1) Absolute maximum rating

The absolute maximum ratings are the limit values which must not be exceeded when using the device.

Any one of the rating must not be exceeded. If The absolute maximum rating is exceeded, the

characteristics may not be recovered. In some extreme cases, the device may be permanently damage.

(2) Operating Range

The operating range is the range of conditions necessary for the device to operate as specified in

individual technical datasheets and databooks. Care must be exercised in the design of the equipment.

If a device is used under conditions that do not exceed absolute maximum ratings but exceed the

operating range, the specifications related to device operation and electrical characteristics may not be

met, resulting in a decrease in reliability.

If greater reliability is required, derate the device’s operating ranges for voltage, current, power and

temperature before use.

0.1uF

TOTX173A(F)

2007-03-08

(3) Life of light emitters

When the optical module is used for over a long period, degeneration of characteristics is mostly due to

lowering of the fiber output power (Pf). This is caused by the degradation of the optical output of the LED’s

used as the light source. The cause of degradation of the optical output of the LED’ may be defects in

wafer crystallization or mold resin stress. The detailed causes are, however, not clear.

The life of light emitters is greatly influenced by operating conditions and usage environment as well as the

life characteristics unique to the device. Thus, when selecting a light emitter and setting the operating

conditions, Toshiba recommends that you check the life characteristics.

Depending on the environment conditions, Toshiba recommends maintenance such as regular checks on

the amount of optical output.

(4) Soldering

Optical modules use semiconductor devices internally. However, in principle, optical modules are optical

components. At soldering, take care that flux dose not contact the emitting surface or detecting surface.

Also take care at flux removal after soldering.

Some optical modules come with protective cap. The protective cap is used to avoid malfunction when the

optical module is not in use. Not that it is not dust or waterproof.

As mentioned before, optical modules are optical component. Thus, in principle, soldering where there

may be flux residue or flux removal after soldering is not recommended. Toshiba recommends that

soldering be performed without the optical module mounted on the board. Then, after the board is cleaned,

solder the optical module manually. Do not perform any further cleaning.

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 eliminate the effects of

flux.

(5) Vibration and shock

This module is resin−molded construction with wire fixed by resin. This structure is relatively sound against

vibration or shock, In actual equipment, there are some cases where vibration, shock, and stress is

applied to soldered parts or connected parts, resultingin line cut. Attention must be paid to the design of the

mechanism for applications which are subject to large amounts of vibration.

(6) Fixing fiber optical transmitting module

Solder the fixed pin (pins 5 and 6) of fiber optic transmitting module TOTX173A (F)to the printed circuit

board to fix the module to the board.

(7) Solvent

When using solvent for flux removal, do not use a high acid or high alkali solvent. Be careful not to pour

solvent in the optical connector ports. If solvent is inadvertently poured there, clean with cotton tips.

(8) Protective cap

When the fiber optic transmitting module TOTX173A(F) is not in use, use the protective cap.

(9) Supply Voltage

Use the supply voltage within the operating condition (VCC = 5 ± 0.25 V). Make sure that supply voltage

does not exceed the absolute maximum rating value of 7 V, even instantaneously.

(10) Input voltage

If a voltage exceeding the absolute maximum rating value (VCC + 0.5V) is applied to the transmitter input,

the internal IC may degrade causing some damage. If excessive voltage due to surges may be added to

the input, insert a protective circuit.

(11) Soldering condition

Solder at 260°C or less for no more than ten seconds.

(12) Precaution on waste

When discarding devices and packing materials, follow procedures stipulated by local regulations in order

to protect the environment against contamination.

Compound semiconductors such as GaAs are used as LED materials for this module. When discarding

waste or at final processing, attention must be paid to workers and the environment.

TOTX173A(F)

2007-03-08

(13) Precaution on use

Toshiba is continually working to improve the quality and the 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

observe standards of safety, and to avoid situations in which a malfunction or failure of a Toshiba product

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 product specifications. Also, please keep in mind the precautions

and conditions set forth in the Toshiba Semiconductor Reliability Handbook.

• The information contained herein is subject to change without notice.

• TOSHIBA is continually working to improve the quality 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, combustion 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.

• The information contained herein is presented only as a guide for the applications of our products. No

responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which

may result from its use. No license is granted by implication or otherwise under any patent or patent rights of

TOSHIBA or others.

• GaAs(Gallium Arsenide) is used in this product. The dust or vapor is harmful to the human body. Do not break,

cut, crush or dissolve chemically.

• Please use this product in compliance with all applicable laws and regulations that regulate the inclusion or use of

controlled substance. TOSHIBA assumes no liability for damage or losses occurring as a result of noncompliance

with applicable laws and regulations.

RESTRICTIONS ON PRODUCT USE