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TTL to RS485 Converter with Galvanic Isolation - Waveshare 27479
The TTL to RS485 Converter (C) is a compact, professional module designed to convert TTL signals (3.3V/5V) to a differential RS485 signal , enabling stable communication over long distances. It is designed for industrial applications, automation, measurement systems, and embedded projects where reliability, interference immunity, and transmission security are key.
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Product description: TTL to RS485 converter with galvanic isolation - Waveshare 27479
The TTL to RS485 Converter (C) is a compact, professional module designed to convert TTL signals (3.3V/5V) to a differential RS485 signal , enabling stable communication over long distances. It was designed for industrial applications, automation, measurement systems, and embedded projects , where reliability, interference immunity, and secure transmission are key. The module features full galvanic isolation of the power supply and signals , effectively protecting host devices from surges, ground loops, and electromagnetic interference. Built-in protection features, such as TVS, protective diodes, and a self-resetting fuse , ensure stable operation even in harsh environmental conditions. Thanks to its castellated edge pins and ENIG (immersion gold) finish, the converter is easy to integrate directly onto PCBs .
TTL to RS485 converter with galvanic isolation - Waveshare 27479.
Botland is an official distributor of Waveshare devices. Their versatility and compatibility, particularly in display and power technology, have won over customers all over the world. Our team guarantees that all Waveshare products presented here are original.
The TTL to RS485 Converter (C) is a compact, professional module designed to convert TTL signals (3.3V/5V) to a differential RS485 signal.
Special features
- TTL to RS485 signal conversion (half-duplex)
- Compatible with TTL levels from 3.3V to 5V
- Galvanic isolation of power supply and signals - high immunity to interference
- Built-in security:
- TVS surge and antistatic
- ESD protection up to 6 kV
- overvoltage and overcurrent protection
- self-resetting fuse
- Supports point-to-point and point-to-multipoint communication
- Integrated 120 Ω terminating resistor (activated by solder jumper)
- Compact dimensions and castellated through holes for easy installation
- LEDs indicating power and TX/RX transmission
Practical applications
The TTL to RS485 (C) converter is ideal for projects requiring reliable long-distance communication, such as industrial automation systems, sensor networks, measurement systems, PLCs, BMS systems, and IoT solutions. Thanks to its galvanic isolation, it is particularly recommended for installations susceptible to interference, ground potential differences, and electrostatic discharge.
Technical specifications of the converter
- Power supply: DC 3.3 V to 5 V
- TTL levels: 3.3V/5V
- Communication mode: half-duplex
- Standards: TTL / RS485
- TTL transmission:
- range: < 10 m
- mode: point-to-point
- RS485 transmission:
- range: up to approx. 1.2 km
- mode: point-to-multipoint (up to 32 nodes, repeaters above 16 recommended)
- RS485 security:
- 200 W surge protection
- ESD protection up to 6 kV
- Terminating resistor: 120 Ω (jumper)
- Isolation: power and signals (built-in)
- Interfaces: TTL (RXD, TXD), RS485 (A+, B-, PE)
- LED indicators: PWR, TXD, RXD
- Dimensions: 42.8 x 15.2 x 4.75 mm
Contents of the set
- 1x TTL to RS485 (C) converter with galvanic isolation
Thanks to castellated through-holes and ENIG (immersion gold) finish, the converter is easy to integrate directly into PCBs.
Useful links
| Name | Value |
|---|---|
| Width | 7 cm |
| Height | 11 cm |
| Depth | 0.1 cm |
| Weight | 0.004 kg |
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30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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