TCA9509RVHR

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Texas Instruments

2-BIT LEVEL-TRANSLATING 400-KHZ I2C/SMBUS BUFFER/REPEATER WITH INTERNAL 1-MA CURRENT SOURCE

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TCA9509RVHR

Active

Texas Instruments

2-BIT LEVEL-TRANSLATING 400-KHZ I2C/SMBUS BUFFER/REPEATER WITH INTERNAL 1-MA CURRENT SOURCE

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Description Specifications Series Pricing CAD Documents

Description

General part information

TCA9509 Series

This TCA9509 integrated circuit is an I2C bus/SMBus Repeater for use in I2C/SMBus systems. It can also provide bidirectional voltage-level translation (up-translation/down-translation) between low voltages (down to 0.9V) and higher voltages (2.7V to 5.5V) in mixed-mode applications. This device enables I2C and similar bus systems to be extended, without degradation of performance even during level shifting.

The TCA9509 buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, thus allowing 400pF bus capacitance on the B-side. This device can also be used to isolate two halves of a bus for voltage and capacitance.

The TCA9509 has two types of drivers – A-side drivers and B-side drivers. All inputs and B-side I/Os are overvoltage tolerant to 5.5V. The A-side I/Os are overvoltage tolerant to 5.5V when the device is unpowered (VCCB and/or VCCA = 0 V).

Technical Specifications

Parameters and characteristics for this part

Specification	TCA9509RVHR

Applications	I2C
Capacitance - Input	6.5 pF
Current - Supply	3 mA
Data Rate (Max)	400 kbps
Input	2-Wire Bus
Mounting Type	Surface Mount
Number of Channels	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output	2-Wire Bus
Package / Case	8-XFQFN Exposed Pad
Package Length	1.6 mm
Package Name	8-X2QFN
Package Width	1.6 mm
Type	ReDriver, Buffer
Voltage - Supply (Maximum)	5.5 V
Voltage - Supply (Minimum)	2.7 V

TCA9509 Series

Part	Input	Package Name	Data Rate (Max)	Applications	Output	Capacitance - Input	Operating Temperature (Min)	Operating Temperature (Max)	Package Width	Package Length	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Mounting Type	Type	Number of Channels	Current - Supply	Package / Case	Voltage - Supply (Range 2 Maximum)	Voltage - Supply (Range 2 Minimum)	Voltage - Supply (Range 1 Maximum)	Voltage - Supply (Range 1 Minimum)	Delay Time
Texas Instruments TCA9509DGKR	2-Wire Bus	8-TSSOP 8-MSOP 8-VSSOP	400 kbps	I2C	2-Wire Bus	6.5 pF	-40 °C	85 °C	3 mm	0.118 in	5.5 V	2.7 V	Surface Mount	Buffer ReDriver	1	3 mA
Texas Instruments TCA9509RVHR	2-Wire Bus	8-X2QFN	400 kbps	I2C	2-Wire Bus	6.5 pF	-40 °C	85 °C	1.6 mm	1.6 mm	5.5 V	2.7 V	Surface Mount	Buffer ReDriver	1	3 mA	8-XFQFN Exposed Pad
Texas Instruments TCA9509MRVHR	2-Wire Bus	8-X2QFN	400 kbps	I2C	2-Wire Bus	6.5 pF	-40 °C	85 °C	1.6 mm	1.6 mm			Surface Mount	Buffer ReDriver	1	900 µA	8-XFQFN Exposed Pad	5.5 V	2.7 V	5.5 V	0.9 V	127.2 ns

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

Datasheet

Understanding the I2C Bus

Maximum Clock Frequency of I2C Bus Using Repeaters

Choosing the Correct I2C Device for New Designs

I2C Bus Pull-Up Resistor Calculation

Why, When, and How to use I2C Buffers

Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A)

Resolving Improper Implementation of the Static Voltage Offset on I2C Buffers