Bus Repeater. PCA9517 Datasheet

PCA9517 Repeater. Datasheet pdf. Equivalent

Part PCA9517
Description Level-Translating I2C Bus Repeater
Feature Product Folder Sample & Buy Technical Documents Tools & Software Support & Community PCA9517 SC.
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Total Page 25 Pages
Datasheet
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PCA9517
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
PCA9517
SCPS157E – DECEMBER 2007 – REVISED JUNE 2014
PCA9517 Level-Translating I2C Bus Repeater
Not Recommended for New Designs
1 Features
1 Two-Channel Bidirectional Buffer
• I2C Bus and SMBus Compatible
• Operating Supply Voltage Range of 0.9 V to 5.5 V
on A Side
• Operating Supply Voltage Range of 2.7 V to 5.5 V
on B Side
• Voltage-Level Translation From 0.9 V to 5.5 V and
2.7 V to 5.5 V
• Footprint and Function Replacement for
PCA9515A
• Active-High Repeater-Enable Input
• Open-Drain I2C I/O
• 5.5-V Tolerant I2C and Enable Input Support
Mixed-Mode Signal Operation
• Lockup-Free Operation
• Accommodates Standard Mode and Fast Mode
I2C Devices and Multiple Masters
• Powered-Off High-Impedance I2C Pins
• 400-kHz Fast I2C Bus
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 2000-V Human-Body Model (A114-A)
– 200-V Machine Model (A115-A)
– 1000-V Charged-Device Model (C101)
2 Description
This dual bidirectional I2C buffer is operational at
2.7 V to 5.5 V.
The PCA9517 is a BiCMOS integrated circuit
intended for I2C bus and SMBus systems. It can also
provide bidirectional voltage-level translation (up-
translation/down-translation) between low voltages
(down to 0.9 V) and higher voltages (2.7 V to 5.5 V)
in mixed-mode applications. This device enables I2C
and similar bus systems to be extended, without
degradation of performance even during level shifting.
The PCA9517 buffers both the serial data (SDA) and
the serial clock (SCL) signals on the I2C bus, thus
allowing two buses of 400-pF bus capacitance to be
connected in an I2C application. This device can also
be used to isolate two halves of a bus for voltage and
capacitance.
The PCA9517 has two types of drivers—A-side
drivers and B-side drivers. All inputs and I/Os are
overvoltage tolerant to 5.5 V, even when the device is
unpowered (VCCB and/or VCCA = 0 V).
The PCA9517 doesnot support clock stretching and
arbitration across the repeater.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
PCA9517
SOIC (8)
VSSOP (8)
4.90 mm × 3.91 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
VCCA
SCLA
SDAA
GND
D PACKAGE
(TOP VIEW)
18
27
36
45
VCCB
SCLB
SDAB
EN
DGK PACKAGE
(TOP VIEW)
VCCA
SCLA
SDAA
GND
1
2
3
4
8 VCCB
7 SCLB
6 SDAB
5 EN
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.



PCA9517
Not Recommended for New Designs
PCA9517
SCPS157E – DECEMBER 2007 – REVISED JUNE 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Description ............................................................. 1
3 Revision History..................................................... 2
4 Description (Continued) ........................................ 3
5 Pin Configuration and Functions ......................... 4
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ..................................... 4
6.2 Handling Ratings....................................................... 4
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 6
6.6 Timing Requirements ................................................ 6
6.7 I2C Interface Timing Requirements........................... 7
7 Parameter Measurement Information .................. 8
8 Detailed Description .............................................. 9
8.1 Functional Block Diagram ......................................... 9
8.2 Feature Description................................................. 10
8.3 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 12
9.1 Typical Application ................................................. 12
10 Device and Documentation Support ................. 15
10.1 Trademarks ........................................................... 15
10.2 Electrostatic Discharge Caution ............................ 15
10.3 Glossary ................................................................ 15
11 Mechanical, Packaging, and Orderable
Information ........................................................... 15
3 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (March 2012) to Revision E
Page
• Added Clock Stretching Errata section. ............................................................................................................................... 10
• Added Load Dependent Undershoot Errata section............................................................................................................. 10
• Added Glitch/Noise Susceptibility Errata section.................................................................................................................. 11
• Added Load Susceptibility Errata section. ............................................................................................................................ 11
Changes from Revision B (May 2010) to Revision C
Page
• Deleted all references to arbitration and clock stretching support. This does not effect min/max specifications. ................ 1
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Product Folder Links: PCA9517
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