Bus Buffer. P82B96 Datasheet

P82B96 Buffer. Datasheet pdf. Equivalent

Part P82B96
Description Bus Buffer
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P82B96
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P82B96
SCPS144C – MAY 2006 – REVISED MAY 2015
P82B96 I2C Compatible Dual Bidirectional Bus Buffer
1 Features
1 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
2 Applications
• HDMI DDC
• Long I2C Communication
• Galvanic I2C Isolation
• Industrial Communications
3 Description
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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.91 mm
P82B96
VSSOP (8)
PDIP (8)
3.00 mm × 3.00 mm
9.81 mm × 6.35 mm
TSSOP (8)
3.00 mm × 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Main Enclosure
12 V
3.3–5 V
Long-Distance I2C Communications
Remote-Control Enclosure
12 V
Long Cables
3.3–5 V
SCL
3.3–5 V
12 V
SCL
3.3–5 V
SDA
P82B96
P82B96
SDA
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.



P82B96
P82B96
SCPS144C – MAY 2006 – REVISED MAY 2015
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ..................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics: VCC = 2.3 V to 2.7 V ........ 6
7.6 Electrical Characteristics: VCC = 3 V to 3.6 V ........... 7
7.7 Electrical Characteristics: VCC = 4.5 V to 5.5 V ........ 8
7.8 Electrical Characteristics: VCC = 15 V....................... 9
7.9 Switching Characteristics ........................................ 10
7.10 Typical Characteristics .......................................... 11
8 Parameter Measurement Information ................ 12
9 Detailed Description ............................................ 13
9.1 Overview ................................................................. 13
9.2 Functional Block Diagram ....................................... 13
9.3 Feature Description................................................. 14
9.4 Device Functional Modes........................................ 14
10 Application and Implementation........................ 15
10.1 Application Information.......................................... 15
10.2 Typical Applications .............................................. 17
11 Power Supply Recommendations ..................... 21
12 Layout................................................................... 21
12.1 Layout Guidelines ................................................. 21
12.2 Layout Example .................................................... 21
13 Device and Documentation Support ................. 22
13.1 Community Resources.......................................... 22
13.2 Trademarks ........................................................... 22
13.3 Electrostatic Discharge Caution ............................ 22
13.4 Glossary ................................................................ 22
14 Mechanical, Packaging, and Orderable
Information ........................................................... 22
4 Revision History
Changes from Revision B (July 2007) to Revision C
Page
• Added Pin Configuration and Functions section, ESD Ratings table, Feature Description section, Device Functional
Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device
and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1
• Changed VCC pins to VCC pins in pinout diagrams................................................................................................................ 4
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