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TCA9617A Datasheet Preview

TCA9617A Datasheet

Bus Repeater

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TCA9617A
SCPS244B – JUNE 2013 – REVISED DECEMBER 2018
TCA9617A Level-Translating FM+ I2C Bus Repeater
1 Features
1 Two-Channel Bidirectional I2C Buffer
• Support for Standard Mode, Fast Mode (400 kHz),
and Fast Mode+ (1 Mhz) I2C Operation
• Operating Supply Voltage Range of 0.8 V to 5.5 V
on A-Side
• Operating Supply Voltage Range of 2.2 V to 5.5 V
on B-Side
• Voltage-Level Translation From 0.8 V to 5.5 V and
2.2 V to 5.5 V
• Footprint and Function Replacement for TCA9517
• 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
• Support for Clock Stretching and Multiple Master
Arbitration Across The Device
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
• ESD Protection Exceeds JESD 22
– 4000-V Human-Body Model (A114-A)
– 1500-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 TCA9617A is a BiCMOS dual bidirectional buffer
intended for I2C bus and SMBus systems. It can
provide bidirectional voltage-level translation (up-
translation and down-translation) between low
voltages (down to 0.8 V) and higher voltages (2.2 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 TCA9617A buffers both the serial data (SDA)
and the serial clock (SCL) signals on the I2C bus,
allowing two buses of 550-pF or greater 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TCA9617A
VSSOP (8)
3.00 mm × 3.00 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)
VCCA
VCCB
SCLA
SDAA
SCLB
SDAB
TCA9617A
EN
GND
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.




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TCA9617A Datasheet Preview

TCA9617A Datasheet

Bus Repeater

No Preview Available !

TCA9617A
SCPS244B – JUNE 2013 – REVISED DECEMBER 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 3
6.1 Absolute Maximum Ratings ..................................... 3
6.2 ESD Ratings ............................................................ 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 4
6.5 Electrical Characteristics........................................... 5
6.6 Timing Requirements ................................................ 6
6.7 Typical Characteristics .............................................. 6
7 Parameter Measurement Information .................. 7
8 Detailed Description .............................................. 9
8.1 Overview ................................................................... 9
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 11
9 Application and Implementation ........................ 12
9.1 Application Information............................................ 12
9.2 Typical Application .................................................. 12
10 Power Supply Recommendations ..................... 15
11 Layout................................................................... 16
11.1 Layout Guidelines ................................................. 16
11.2 Layout Example .................................................... 16
12 Device and Documentation Support ................. 17
12.1 Receiving Notification of Documentation Updates 17
12.2 Community Resource............................................ 17
12.3 Trademarks ........................................................... 17
12.4 Electrostatic Discharge Caution ............................ 17
12.5 Glossary ................................................................ 17
13 Mechanical, Packaging, and Orderable
Information ........................................................... 17
4 Revision History
Changes from Revision A (July 2014) to Revision B
Page
• Changed the appearance of the DGK pin out image ............................................................................................................ 3
• Changed the Handling Ratings table to ESD Ratings table ................................................................................................... 4
• Moved Storage temperature range From the ESD Ratings to the Absolute Maximum Ratings table ................................... 4
• Deleted VCCA < VCCB from the Design Requirements list...................................................................................................... 12
Changes from Original (June 2013) to Revision A
Page
• Deleted " Powered-Off High-Impedance I2C Pins" from Features list .................................................................................... 1
• Added Applications. ............................................................................................................................................................... 1
• Added Handling Ratings table. ............................................................................................................................................... 4
• Added Thermal Information table. ......................................................................................................................................... 4
• Added Typical Characteristics section. .................................................................................................................................. 6
• Added Detailed Description section. ...................................................................................................................................... 9
• Added Application and Implementation section. ................................................................................................................. 12
• Added Power Supply Recommendations section. .............................................................................................................. 15
• Added Layout section. ......................................................................................................................................................... 16
2
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Copyright © 2013–2018, Texas Instruments Incorporated


Part Number TCA9617A
Description Bus Repeater
Maker etcTI
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