Toshiba TOTX173 User's Guide
Summary
The TOTX173 Fiber Optic Transmitting Module is a high-performance component designed for transmitting data via fiber optic interconnections in digital audio equipment and related electronics. This technical manual serves as an essential guide, detailing comprehensive specifications including electrical characteristics, maximum operating limits, recommended application circuits, and critical handling precautions (e.g., Soldering procedures and GaAs safety). It is intended for engineers, designers, and technicians integrating reliable optical transmission into professional or industrial digital audio systems.
Page 1 Text Content
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TOTX173
FIBER OPTIC TRANSMITTING MODULE
TOTX173
FIBER OPTIC TRANSMITTING Unit: mm MODULE FOR DIGITAL AUDIO EQUIPMENT
Conform to JEITA Standard CP−1201 (For Digital Audio Interfaces including Fiber Optic inter−connections). TTL Interface LED is driven by differential circuit.
1. 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. Recommended Operating Conditions
Characteristics Symbol Min Typ. Max Unit
Supply Voltage VCC 4.75 5.0 5.25 High Level Input Voltage VIH 2.0 ― VCC V Low Level Input Voltage VIL 0 ― 0.8 V
Handling precaution: The LEDs used in this product contain Ga As (Gallium Arsenide).
Care must be taken to protect the safety of people and the environment when scrapping or terminal processing.
Page Summary Contents For Toshiba TOTX173 User's Guide
Manual Details
| Brand | Toshiba |
|---|---|
| Pages | 5 |
| File Size | 115.54 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What is the recommended operating temperature range?
The operating temperature (opr) ranges from -20 to 70°C.
How should I handle potential GaAs hazards?
Do not break, cut, or pulverize the product, and follow appropriate regulations when disposing of it. It cannot be discarded with general industrial waste.
What precautions must be taken during soldering?
Ensure flux does not contact emitting or detecting surfaces. Hand-soldering is recommended after cleaning,
How often should I check the optical output power of the module?
Toshiba recommends regular checks on the amount of optical output, depending on the environment and usage.