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TCA9617A

ACTIVE

2-bit level-translating 1-MHz I2C/SMBus buffer/repeater

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Data sheet

TCA9617A

ACTIVE
Data sheet Order now

Product details

Features Buffer, Enable pin Frequency (max) (MHz) 1 VCCA (min) (V) 0.8 VCCA (max) (V) 5.5 VCCB (min) (V) 2.2 VCCB (max) (V) 5.5 Supply restrictions VCCA <= VCCB Rating Catalog Operating temperature range (°C) -40 to 85
Features Buffer, Enable pin Frequency (max) (MHz) 1 VCCA (min) (V) 0.8 VCCA (max) (V) 5.5 VCCB (min) (V) 2.2 VCCB (max) (V) 5.5 Supply restrictions VCCA <= VCCB Rating Catalog Operating temperature range (°C) -40 to 85
VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Two-channel bidirectional I2C buffer
  • Support for standard mode, fast mode (400kHz), and fast mode+ (1Mhz) I2C operation
  • Operating supply voltage range of 0.8V to 5.5V on A-side
  • Operating supply voltage range of 2.2V to 5.5V on B-side
  • Voltage-level translation from 0.8V to 5.5V and 2.2V to 5.5V
  • Footprint and function replacement for TCA9517
  • Active-high repeater-enable input
  • Open-drain I2C I/O
  • 5.5V Tolerant I2C and enable input support
  • Lockup-free operation
  • Support for clock stretching and multiple controller arbitration across the device
  • Latch-up performance exceeds 100mA Per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 4000V Human-body model
    • 1500V Charged-device model
  • Two-channel bidirectional I2C buffer
  • Support for standard mode, fast mode (400kHz), and fast mode+ (1Mhz) I2C operation
  • Operating supply voltage range of 0.8V to 5.5V on A-side
  • Operating supply voltage range of 2.2V to 5.5V on B-side
  • Voltage-level translation from 0.8V to 5.5V and 2.2V to 5.5V
  • Footprint and function replacement for TCA9517
  • Active-high repeater-enable input
  • Open-drain I2C I/O
  • 5.5V Tolerant I2C and enable input support
  • Lockup-free operation
  • Support for clock stretching and multiple controller arbitration across the device
  • Latch-up performance exceeds 100mA Per JESD 78, class II
  • ESD protection exceeds JESD 22
    • 4000V Human-body model
    • 1500V Charged-device model

The TCA9617A is a BiCMOS dual bidirectional buffer intended for I2C bus and SMBus systems. The device provides bidirectional voltage-level translation (up-translation and down-translation) between low voltages (down to 0.8V) and higher voltages (2.2V 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 TCA9617A buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, allowing two buses of 550pF to be connected in an I2C application. This device can also be used to separate two halves of a bus for voltage and capacitance.

The TCA9617A is a BiCMOS dual bidirectional buffer intended for I2C bus and SMBus systems. The device provides bidirectional voltage-level translation (up-translation and down-translation) between low voltages (down to 0.8V) and higher voltages (2.2V 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 TCA9617A buffers both the serial data (SDA) and the serial clock (SCL) signals on the I2C bus, allowing two buses of 550pF to be connected in an I2C application. This device can also be used to separate two halves of a bus for voltage and capacitance.
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TCA9803 ACTIVE 2-bit level-translating 400-kHz I2C/SMBus buffer/repeater with internal 3-mA current source This P2P device has improved performance (better signal integrity, faster rise times, slew rate control) and reduces external components required

Technical documentation

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Type Title Date
* Data sheet TCA9617A Level-Translating FM+ I2 C Bus Repeater datasheet (Rev. C) PDF | HTML 10 Jan 2024
Application note Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters (Rev. A) PDF | HTML 03 Jul 2024
Application note Why, When, and How to use I2C Buffers 23 May 2018
Application note Choosing the Correct I2C Device for New Designs PDF | HTML 07 Sep 2016
Selection guide I2C Infographic Flyer 03 Dec 2015
Application note Understanding the I2C Bus PDF | HTML 30 Jun 2015
Application note Maximum Clock Frequency of I2C Bus Using Repeaters 15 May 2015
Application note I2C Bus Pull-Up Resistor Calculation PDF | HTML 13 Feb 2015

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