MCU TTL to RS485 Module – Automatic Bidirectional
$5.301pcs
The MCU TTL to RS485 module with automatic bidirectional control converts TTL-level signals to RS485 differential signals without manual direction switching. It ensures stable and efficient communication, making it suitable for microcontroller-based industrial and embedded applications.
| Dimensions | 34 × 19 mm |
|---|---|
| Brand |
easyelecmodule |
3715 in stock
MCU TTL to RS485 Module - Automatic Bidirectional
I. Electrical Parameters
- Communication Distance: Long-distance transmission can reach up to thousands of meters.
- Signal Rate: Up to 500Kbps.
- ESD Protection: 15KV ESD protection.
- Operating Temperature: -40°C to +85°C.
- Bus Load: Receiver input impedance of 1/4 unit load, allowing connection to a bus with up to 128 devices.
II. Chip Features
- Equipped with a limited slew rate driver, which minimizes EMI and reduces signal reflection caused by improperly terminated and matched cables.
- Can be hot-swapped without the signal latching phenomenon.
III. Protection and Filtering Design
- Power Filtering: The power supply uses chip tantalum capacitors and dual capacitors for high and low-frequency power filtering.
- Overvoltage Protection: Uses dual transient voltage suppressor (TVS) 600W diodes, providing better overvoltage protection performance.
- Signal Protection: Uses 100-ohm current protection resistors and has serial input protection. The chip design improves the integrity of 485 signals.
IV. PCB Design
- All RS485 and TTL signals are routed on a single side to ensure signal quality and enhance signal integrity.
- Large-area copper cladding is used to prevent signal interference.
V. Interfaces and Mounting
- Has terminals and welding lead holes, facilitating debugging and wiring of the final version. Welding leads can improve signal reliability.
- Has 2.54-pitch perfboard welding holes, facilitating your secondary development.
- Has M3 screw holes, making installation convenient and reliable.
VI. Configuration Function
- Has a 120-ohm terminal resistor. Shorting the SET point can enable the terminal resistor (when the line length is 200 meters, enabling this resistor makes the signal more stable and reduces the bit error rate).
VII. Indicators
- Has an RXD signal indicator.
MCU TTL to RS485 Module – Automatic Bidirectional Pinout
Shipping Cost
We only ship to the United States. Shipping costs are calculated based on the total order amount.
Shipping Method And Delivery Time
All orders will be processed and shipped within 72 hours of placing the order (excluding weekends and holidays). They will ship from Shenzhen, China, primarily via 4PX logistics. Depending on the destination and logistics conditions, other carriers such as DHL, FedEx, UPS, USPS, etc., may also handle the delivery. Estimated shipping time is 7-12 business days, with actual delivery occurring in 10-17 business days, depending on logistics conditions.
Payment:
We accept Visa, Master card, Maestro, American Express, JCB, Dinner's Club, Discover, Paypal, Apple Pay, Google Pay .
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