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P82B715 Series 12 V 400 kHz 22 mA Surface Mount I2C-bus Extender - SOIC-8

Modèle ECAD:
Nom du fabricant: NXP
Emballage standard:
Product Variant Information section
Code de date: 2131
Product Specification Section
Caractéristiques techniques
Attributes Table
Interface Circuit Type: I2C
No of Channels: 2
Clock Frequency-Max: 400kHz
Supply Voltage-Nom: 4.5V to 12V
Supply Current: 22mA
Style d'emballage :  SOIC-8
Méthode de montage : Surface Mount
Fonctionnalités et applications

NXP is a leading semiconductor company founded by Philips more than 50 years ago. NXP creates semiconductors, system solutions and software that deliver better sensory experiences in TVs, set-top boxes, identification applications, mobile phones, cars and a wide range of other electronic devices.

The P82B715 is a bipolar IC intended for application in I2C-bus and derivative bus systems. While retaining all the operating modes and features of the I2C-bus it permits extension of the practical separation distance between components on the I2C-bus by buffering both the data (SDA) and the clock (SCL) lines.

The I2C-bus capacitance limit of 400 pF restricts practical communication distances to a few meters. Using one P82B715 at each end of a long cable (connecting Lx/Ly to Lx/Ly) reduces that cable's loading on the linked I2C-buses by a factor of 10 and allows the total system capacitance load (all devices, cable, connectors, and traces or wires connected to the I2C-bus) to be around 3000 pF while the loading on each I2C-bus on the Sx/Sy sides remains below 400 pF. Longer cables or low-cost, general-purpose wiring may be used to link I2C-bus based modules without degrading noise margins. Multiple P82B715s can be connected together, linking their Lx/Ly ports, in a star or multi-point architecture as long as the total capacitance of the system is less than about 3000 pF and each bus at an Sx/Sy connection is well below 400 pF. This configuration, with the master and/or slave devices attached to the Sx/Sy port of each P82B715, has full multi-master communication capability. The P82B715 alone does not support voltage level translation, but it can be simply implemented using low cost transistors when required. There is no restriction on interconnecting the Sx/Sy I/Os, and, because the device output levels are always held within 100 mV of input drive levels, P82B715 is compatible with bus buffers that use voltage level offsets, e.g., PCA9511A, PCA9517, Sx/Sy side of P82B96.

The lower VOL level and ability to operate with any master, slave or bus buffer is the primary advantage of the using the P82B715 for long distance buses at the disadvantage of not isolating bus capacitance like the P82B96 or PCA9600 are able to do. The primary disadvantage of the P82B96 and PCA9600 is that the static level offset needed to isolate bus capacitance does not allow these devices to operate with other bus buffers with special offset levels or with master/slaves that require a VIL lower than 0.8 V with noise margin.

The P82B715TD-T is a I2C-bus extender bus buffer with a Voltage – Supply 4.5 V ~ 12 V and a Current – Supply of 22mA. It has a delay time of 250nS and a Capacitance – Input of 3000pF. It is 8-pin and is packaged in an SOIC (3.9mm Width). The P82B715TD-T comes in tape and reel format.

Pricing Section
Stock globale:
25 000
12 500
d’Allemagne (En ligne seulement):
12 500
Sur commande :Order inventroy details
5 000
Stock d'usine :Stock d'usine :
Délai d'usine :
52 Semaines
Commande minimale :
Multiples de :
13 200,00 $
Prix Internet
2 500+
Product Variant Information section