582565 2159 - I²C Long-Distance Differential Extender

2159 - I²C Long-Distance Differential Extender

This I²C extender board from SJTbits enables the operational range of an I²C bus to be extended significantly. By transparently converting the data and clock lines to differential signals and back, they allow I²C devices to communicate at distances of over a hundred feet.
Categorie
Prezzi IVA inclusa
€ 15,02 Prezzo
€ 12,31 + VAT

Qty
 

Dettagli

This I²C extender board from SJTbits enables the operational range of an I²C bus to be extended significantly. By transparently converting the data and clock lines to differential signals and back, they allow I²C devices to communicate at distances of over a hundred feet.


This I²C extender board from SJTbits greatly expands the operational distance of an I²C (TWI) bus by transparently bridging the connection between individual I²C devices with differential signaling. The board takes the two I²C signals, data (SDA) and clock (SCL), and divides them into inbound and outbound signals (four signals). Each of these unidirectional signals is connected to either a differential line receiver or differential line transmitter, thus forming four sets of differential pairs (eight signals). By using differential signals, the extender boards can increase the range and noise immunity of an I²C bus, and isolating each I²C device helps avoids problems caused by excessive bus capacitance.


A separate extender board is required for each I²C device on the bus (one for the master and one for each slave), so you will need at least two boards in your system.

The I²C differential extender works best with 5 V on VIN and SDA/SCL (the data/clock lines of the I²C bus); if your I²C bus uses a different voltage level, a logic level converter is recommended. The board does not include pull-ups on SDA and SCL. For more information about using the differential extender, please refer to its datasheet (2MB pdf).

Since standard category 5 cable (or Cat 5, commonly used for Ethernet wiring) contains four differential pairs, it is ideal for making the connections between pairs of I²C extender boards. The extender boards have been tested with Cat 5 cable by SJTbits at a range of 150 feet and an I²C clock speed of 100 kHz. The maximum range possible will depend on the wire properties and clock speed.

The board ships with a pair of 1×10-pin breakaway 0.1″ male headers, which can be soldered in to use the differential extender with perfboards, breadboards, or 0.1″ female connectors.

Dimensions

Size: 1.36″ × 0.935″ × 0.13″1
Weight: 3 g1

General specifications

Minimum operating voltage: 4.75 V
Maximum operating voltage: 5.25 V
Supply current: 170 mA

Notes:

1 Without included header pi

I²C long distance differential extender datasheet (2MB pdf)

Specifiche

Part. No. : 2159

Tags prodotto

Usa gli spazi per tag separati. Usa virgolette singole (') per frasi.

Questions on 2159 - I²C Long-Distance Differential Extender

No questions asked yet

Fai una domanda (Registrati oppure Esegui il Login ).
Fai una domanda (Registrati oppure Esegui il Login ).
  1. Convertitore di livello logico - 8 canali - bidirezionale

    501395 Convertitore di livello logico - 8 canali - bidirezionale

    Adattatore di livello logico bidirezionale basato sul TXB0108. Consente l'interfacciamento tra logiche operanti a tensioni difalse
    Tasse escluse:
    € 7,40
    IVA inclusa:
    € 9,03
      Confronta
  2. Convertitore livello logico I2C, 4 canali, bidirezionale

    501757 Convertitore livello logico I2C, 4 canali, bidirezionale

    Convertitore di livello logico 3.3V/5V, bidirezionale a 4 canali. Adatto per I2C e SPI.
    Tasse escluse:
    € 3,80
    IVA inclusa:
    € 4,64
      Confronta
  3. Logic Level Converter Bi-Directional

    712009 Logic Level Converter Bi-Directional

    Traslatore di livello logico bidirezionale basato bidirezional
    Tasse escluse:
    € 2,15
    IVA inclusa:
    € 2,62
      Confronta

Se hai trovato questo prodotto ad un prezzo migliore, inviaci una segnalazione, faremo tutto il possibile per accontentarti.

Price Match



* Campi richiesti

Il nostro Reparto Vendite rispondera' entro 24 ore via e-mail.

Grazie per la tua fiducia in Robot Italy!