TCA9517 Repeater Datasheet

TCA9517 Datasheet, PDF, Equivalent


Part Number

TCA9517

Description

Level-Shifting I2C Bus Repeater

Manufacture

etcTI

Total Page 27 Pages
Datasheet
Download TCA9517 Datasheet


TCA9517
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
TCA9517
SCPS242D – DECEMBER 2012 – REVISED JULY 2017
TCA9517 Level-Shifting I2C Bus Repeater
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 - 5.5 V to
2.7 V - 5.5 V
• Footprint and Functional Replacement for
PCA9515B
• Active-High Repeater-Enable Input
• Open-Drain I2C I/O
• 5.5-V Tolerant I2C and Enable Input Support
Mixed-Mode Signal Operation
• Accommodates Standard Mode and Fast Mode
I2C Devices and Multiple Masters
• High-Impedance I2C Pins When Powered-Off
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 5500 V Human-Body Model (A114-A)
– 200 V Machine Model (A115-A)
– 1000 V Charged-Device Model (C101)
2 Applications
• Servers
• Routers (Telecom Switching Equipment)
• Industrial Equipment
• Products with Many I2C Slaves and/or Long PCB
Traces
3 Description
The TCA9517 is a bidirectional buffer with level
shifting capabilities for I2C and SMBus systems. It
provides 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 SMBus systems to be extended without
degradation of performance, even during level
shifting.
The TCA9517 buffers both the serial data (SDA) and
the serial clock (SCL) signals on the I2C bus, thus
allowing two buses of up to 400-pF bus capacitance
to be connected in an I2C application.
The TCA9517 has two types of drivers: A-side drivers
and B-side drivers. All inputs and I/Os are over-
voltage tolerant to 5.5 V, even when the device is
unpowered (VCCB and/or VCCA = 0 V).
Device Information(1)
PART NUMBER PACKAGE
BODY SIZE (NOM)
TCA9517
VSSOP (8)
SOIC (8)
3.00 mm × 3.00 mm
4.90 mm x 3.91 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
I2C or SMBus Master
(e.g. Processor)
1
VCCA
3 SDAA
2 SCLA
5 EN
TCA9517
GND
4
8
VCCB
SDAB
6
SCLB 7
I2C Slave Devices
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.

TCA9517
TCA9517
SCPS242D – DECEMBER 2012 – REVISED JULY 2017
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......................................................... 4
7.1 Absolute Maximum Ratings ..................................... 4
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information .................................................. 5
7.5 Electrical Characteristics........................................... 6
7.6 Timing Requirements ................................................ 6
7.7 I2C Interface Switching Characteristics..................... 7
7.8 Typical Characteristics .............................................. 8
8 Parameter Measurement Information .................. 9
9 Detailed Description ............................................ 10
9.1 Overview ................................................................. 10
9.2 Functional Block Diagram ....................................... 10
9.3 Feature Description................................................. 11
9.4 Device Functional Modes........................................ 11
10 Application and Implementation........................ 12
10.1 Application Information.......................................... 12
10.2 Typical Application ............................................... 12
11 Power Supply Recommendations ..................... 15
12 Layout................................................................... 16
12.1 Layout Guidelines ................................................. 16
12.2 Layout Example .................................................... 16
13 Device and Documentation Support ................. 17
13.1 Community Resource............................................ 17
13.2 Trademarks ........................................................... 17
13.3 Electrostatic Discharge Caution ............................ 17
13.4 Glossary ................................................................ 17
14 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (June 2015) to Revision D
Page
• Deleted VCCA < VCCB from the Design Requirements list ..................................................................................................... 12
Changes from Revision B (May 2013) 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
• Removed Ordering Information table. .................................................................................................................................... 3
Changes from Revision A (April 2013) to Revision B
Page
• Updated the TOP-SIDE MARKING column of the ORDERING INFORMATION TABLE. ..................................................... 1
Changes from Original (December 2012) to Revision A
Page
• Added D package to document. ............................................................................................................................................. 1
• Updated the TOP-SIDE MARKING column of the ORDERING INFORMATION TABLE. ..................................................... 1
2 Submit Documentation Feedback
Product Folder Links: TCA9517
Copyright © 2012–2017, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity TCA9517 SCPS242D – DECEMBER 2 012 – REVISED JULY 2017 TCA9517 Level -Shifting I2C Bus Repeater 1 Features •1 Two-Channel Bidirectional Buffer I2C Bus and SMBus Compatible • Ope rating Supply Voltage Range of 0.9 V to 5.5 V on A-side • Operating Supply V oltage Range of 2.7 V to 5.5 V on B-sid e • Voltage-Level Translation From 0. 9 V - 5.5 V to 2.7 V - 5.5 V • Footpr int and Functional Replacement for PCA9 515B • Active-High Repeater-Enable In put • Open-Drain I2C I/O • 5.5-V To lerant I2C and Enable Input Support Mix ed-Mode Signal Operation • Accommodat es Standard Mode and Fast Mode I2C Devi ces and Multiple Masters • High-Imped ance I2C Pins When Powered-Off • Latc h-Up Performance Exceeds 100 mA Per JES D 78, Class II • ESD Protection Excee ds JESD 22 – 5500 V Human-Body Model (A114-A) – 200 V Machine Model (A115- A) – 1000 V Charged-Device Model (C101) 2 Applications • Servers • Routers (Telecom Switching Eq.
Keywords TCA9517, datasheet, pdf, etcTI, Level-Shifting, I2C, Bus, Repeater, CA9517, A9517, 9517, TCA951, TCA95, TCA9, Equivalent, stock, pinout, distributor, price, schematic, inventory, databook, Electronic, Components, Parameters, parts, cross reference, chip, Semiconductor, circuit, Electric, manual, substitute




@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)