I2C extender PCA9515A

Code: LA161071
The average product rating is 2,0 out of 5 stars. 1 rating Rating details
€4,03 €3,33 excl. VAT Measure price:
In stock (1 pcs)
Delivery to:
26/10/2026

Module enabling I2C bus extension with PCA9515A circuit.

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Product detailed description

Module allowing to extend the I2C bus over longer distances. Bus capacity can be max. 400pF per side. The maximum bus length will therefore depend on the specific characteristics of the interconnecting cables. The module can also be used as a bus voltage level converter. For example, one bus 5V and the other 3.3V. The module has all pins 5V tolerant and it does not matter which side of the module will be connected to the bus with higher voltage and which with lower voltage.

PCA9515A-I2C_schem

Specifications:

  • Supply voltage VCC: 2.3-3.6V, type. 3,3V
  • Logic voltages: 3.3V - 5V tolerant (max. 5.5V)
  • Transmission speed: max. 400kHz

Scope of Delivery:

  • 1pc I2C extender PCA9515A

Note:

  • This product is not a standalone functional unit and may require professional installation.
  • Product images are for illustrative purposes only and may sometimes differ from the actual appearance of the item. However, this does not change their basic properties.

Additional parameters

Category: Converters & Programmers
Warranty: 2 years
Weight: 0.002 kg

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JK Avatar of author The product rating is 2 out of 5 stars. 03/10/2026
Toto zapojení je poněkud nešťastné. Rezistory R4 a R5 nemohou být umístěny na této desce a musí být až na vzdáleném místě těsně u slave (například u čidla teploty). Navíc čidla od LaskaKitu většinou tyto rezistory na desce čidel již obsahují. Taktéž rezistory R1 a R2 by tam neměly být, protože pokud budu chtít připojit 3 tyto desky paralelně (vyjma vstupů EN, kterými je budu aktivovat z procesoru), budou tyto rezistory (3x paralelně) zbytečně zatěžovat sběrnici. Lepší by bylo, kdyby toto zapojení rezistory vůbec neobsahovalo. Takže mi nezbylo nic jiného, než všechny rezistory odpájet.

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