Toshiba Fiber Optic Transceiving Module Todx298 Data Sheet
Summary
The TODX298 is a high-precision Fiber Optic Transceiving Module designed for monitoring optical flux in duplex digital signal transmission. It supports data rates up to 8 Mb/s over distances of 1000m, featuring automatic threshold control (ATC) for stable output and simple TTL interfacing. This technical manual provides comprehensive guidance on maximum ratings, detailed electrical/optical characteristics, recommended operating conditions, and crucial handling precautions for system designers and engineers integrating optical communication solutions into demanding electronic applications.
Page 1 Text Content
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TODX298
FIBER OPTIC TRANSCEIVING MODULE
TODX298
FIBER OPTIC TRANSCEIVING
Unit: mm
MODULE WITH ANALOG OUTPUT TO MONITOR OPTICAL FLUX FOR DUPLEX DIGITAL SIGNAL TRANSMISSION
Data rate: DC to 8 Mb / s (NRZ code) Transmission distance: Up to 1000 m TTL interface LED is driven by Differential cuicuit. ATC (Automatic Threshold Control) circuit is used for stabilized output at wide range of optical power level. No need to change a resistor according to transmission distance.
1. Maximum Ratings (Ta = 25°C)
Characteristics Symbol Ratings Unit
Storage Temperature Tstg −40 to 85 °C Operating Temperature Topr −40 to 85 °C Supply Voltage VCC −0.5 to 7 V Input Voltage VIN −0.5 to VCC + 0.5 V High Level Output Current IOH −1 m A Low Level Output Current IOL 20 m A Soldering Temperature Tsol 260 (Note 1) °C
Note 1: Soldering time ≤ 3 s (More than 1 mm apart from the package).
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 Fiber Optic Transceiving Module Todx298 Data Sheet
Manual Details
| Brand | Toshiba |
|---|---|
| Pages | 10 |
| File Size | 180.33 KB |
| Published | July 22, 2026 |
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Frequently Asked Questions
What is the maximum transmission distance supported by the device?
The unit supports transmission up to 1000 m when using PCF fiber.
Does this module require resistor changes based on cable length?
No, the Automatic Threshold Control (ATC) circuit stabilizes the output and requires no changing of a resistor based on transmission distance.
What precautions must be taken due to materials used in this product?
The LEDs contain GaAs (Gallium Arsenide), which is toxic. When disposing of products, follow appropriate regulations and do not mix them with other waste.
How should I monitor the long-term performance of the module?
Since light emitter characteristics can degrade, Toshiba recommends regular checks of the optical output based on the specific operating conditions and environment.