8-pin (DGK) package image

P82B96DGKR ACTIVE

2-bit bidirectional 2- to 15-V 400-kHz I2C/SMBus buffer/cable extender

ACTIVE custom-reels CUSTOM Custom reel may be available
Same as: P82B96DGKRG4 This part number is identical to the part number listed above. You can only order quantities of the part number listed above.

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Quality information

Rating Catalog
RoHS Yes
REACH Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-1-260C-UNLIM
Quality, reliability
& packaging information

Information included:

  • RoHS
  • REACH
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Additional manufacturing information

Information included:

  • Fab location
  • Assembly location
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Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins VSSOP (DGK) | 8
Operating temperature range (°C) -40 to 85
Package qty | Carrier 2,500 | LARGE T&R

Features for the P82B96

  • Operating Power-Supply Voltage Range
    of 2 V to 15 V
  • Can Interface Between I2C Buses Operating at
    Different Logic Levels (2 V to 15 V)
  • Longer Cables by allowing bus capacitance of
    400 pF on Main Side (Sx/Sy) and 4000 pF on
    Transmission Side (Tx/Ty)
  • Outputs on the Transmission Side (Tx/Ty) Have
    High Current Sink Capability for Driving Low-
    Impedance or High-Capacitive Buses
  • Interface With Optoelectrical Isolators and Similar
    Devices That Need Unidirectional Input and
    Output Signal Paths by Splitting I2C Bus Signals
    Into Pairs of Forward (Tx/Ty) and Reverse (Rx/Ry)
    Signals
  • 400-kHz Fast I2C Bus Operation Over at Least
    20 Meters of Wire
  • Latch-Up Performance Exceeds 100 mA Per
    JESD 78, Class II
  • ESD Protection Exceeds JESD 22

Description for the P82B96

The P82B96 device is a bus buffer that supports bidirectional data transfer between an I2C bus and a range of other bus configurations with different voltage and current levels.

One of the advantages of the P82B96 is that it supports longer cables/traces and allows for more devices per I2C bus because it can isolate bus capacitance such that the total loading (devices and trace lengths) of the new bus or remote I2C nodes are not apparent to other I2C buses (or nodes). The restrictions on the number of I2C devices in a system due to capacitance, or the physical separation between them, are greatly improved.

The device is able to provide galvanic isolation (optocoupling) or use balanced transmission lines (twisted pairs), because separate directional Tx and Rx signals are provided. The Tx and Rx signals may be connected directly (without causing bus latching), to provide an bidirectional signal line with I2C properties (open-drain driver). Likewise, the Ty and Ry signals may also be connected together to provide an bidirectional signal line with I2C properties (open-drain driver). This allows for a simple communication design, saving design time and costs.

Two or more Sx or Sy I/Os must not be connected to each other on the same node. The P82B96 design does not support this configuration. Bidirectional I2C signals do not have a direction control pin so, instead, slightly different logic low-voltage levels are used at Sx/Sy to avoid latching of this buffer. A standard I2C low applied at the Rx/Ry of a P82B96 is propagated to Sx/Sy as a buffered low with a slightly higher voltage level. If this special buffered low is applied to the Sx/Sy of another P82B96, the second P82B96 does not recognize it as a standard I2C bus low and does not propagate it to its Tx/Ty output. The Sx/Sy side of P82B96 may not be connected to similar buffers that rely on special logic thresholds for their operation.

The Sx/Sy side of the P82B96 is intended for I2C logic voltage levels of I2C master and slave devices or Tx/Rx signals of a second P82B96, if required. If Rx and Tx are connected, Sx can function as either the SDA or SCL line. Similarly, if Ry and Ty are connected, Sy can function as either the SDA or SCL line. There are no restrictions on the interconnection of the Tx/Rx and Ty/Ry I/O pins to other P82B96s, for example in a star or multi-point configuration (multiple P82B96 devices share the same Tx/Rx and Ty/Ry nodes) with the Tx/Rx and Ty/Ry I/O pins on the common bus, and the Sx/Sy side connected to the line-card slave devices.

In any design, the Sx pins of different devices should never be linked, because the resulting system would be very susceptible to induced noise and would not support all I2C operating modes.

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Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

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