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TECNOIOT 5pcs RS422 Two-Way Transfer Between TTL Bidirectional Signals Full Duplex MAX490

Kostenloser Versand ab 25.99€

14.84€

7 .99 7.99€

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  • 【RS422】RS422 Two-way Communication Transfer Between TTL Bidirectional Signals Full Duplex MAX490 Module.
  • 【Compatible】RS422 interface, two-way communication. A B Y Z ultra-long transmission 1000 meters. The module has 15KV ESD protection. Add 10 ohm current limiting/overcurrent protection resistor to the board. The module comes with TVS diodes. Anti-lightning, anti-spike voltage.
  • 【Design compact】 The module has 120 ohm terminal resistance, it can reduce long-distance communication echo interference effectively. With power indicator and data transceiver indicator. Easy to watch the Data status.
  • 【Easy operation】The module TTL side uses 5V DC power supply RXD TXD compatible 5V logic signal.The module uses high-quality MAX490 chip, stability and communication is extremely high, up to 2.5MBPS.Size: approx. 50 x 27mm.
  • 【Fast delivery】 Fast and high quality delivery of Spain buying in TECNOIOT


X5pcs RS422 Two-way Communication Transfer Between TTL Bidirectional Signals Full Duplex MAX490 Module


Specifications:
- RS422 interface, two-way communication. A B Y Z ultra-long transmission 1000 meters. The module has 15KV ESD protection.
- Add 10 ohm current limiting/overcurrent protection resistor to the board.
- The module comes with TVS diodes. Anti-lightning, anti-spike voltage.
- The module has 120 ohm terminal resistance, it can reduce long-distance communication echo interference effectively.
- With power indicator and data transceiver indicator. Easy to watch the Data status.
- The module TTL side uses 5V DC power supply RXD TXD compatible 5V logic signal.
- The module uses high-quality MAX490 chip, stability and communication is extremely high, up to 2.5MBPS.
- Size: approx. 50 x 27mm
Packet Contains:

5pcs x RS422 Two-way TTL Bidirectional Signals Full Duplex MAX490 Module


Cliente
Bewertet in Spanien am 5. März 2023
No proporcionan documentación o algún datasheet con las interfaces. De momento no me ha servido para conectar un rs422 a un arduino pro.Por el precio me lo quedo y seguiré intentándolo.
Cliente
Bewertet in Italien am 2. März 2022
la uso alimentata a 5v e connessa a seriale di stm32 5v tolerant.i pins TX e RX sulla scheda sono gli effettivi corrispondenti pins tx e rx della seriale ttl del proprio host.i pins differenziali sono:A ( RX+ )B ( RX- )Y ( TX+ )Z ( TX- )in sostanza A,B sono la ricezione e Y,Z la trasmissione ; basta ricordare che in ordine alfabetico si ha + e poi -quando si connettono 2 schede differenziali si dovra' connettere A, B della prima al Y, Z della seconda ( per ricevere la trasmissione dalla seconda )e si dovra' connettere Y, Z della prima al A, B della seconda ( per trasmettere verso la seconda ).e' importante connettere anche il gnd tra le due schede pena in danneggiamento del chip. in caso non si possa garantire uno stesso livello di potenziale gnd tra le due apparecchiature e al fine di evitare ground loop sara' invece necessario usare ripetitori optoisolati.il cavo da usare dovrebbe essere schermato e con due coppie intrecciate: una coppia per A, B e una coppia per Y, Z cosi' da annullare l'interferenza esterna ( common mode noise ).
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