The TCA9617ADGKR is a BiCMOS dual bidirectional buffer intended forI2C bus and SMBus systems. It can provide bidirectional voltage-leveltranslation (up-translation and down-translation) between low voltages (down to 0.8 V) and highervoltages (2.2 V to 5.5 V) in mixed-mode applications. This device enablesI2C and similar bus systems to be extended, without degradation ofperformance even during level shifting.
The TCA9617ADGKR buffers both the serial data (SDA) and the serial clock (SCL) signals on theI2C bus, allowing two buses of 550-pF or greater bus capacitance to beconnected in an I2C application. This device can also be used to isolatetwo halves of a bus for voltage and capacitance.
Feature
Two-Channel Bidirectional I2CBuffer
Support for Standard Mode, Fast Mode (400 kHz), and Fast Mode+ (1 Mhz)I2C Operation
Operating Supply Voltage Range of 0.8Vto5.5V on A-Side
Operating Supply Voltage Range of 2.2Vto5.5V on B-Side
Voltage-Level Translation From 0.8Vto5.5V and 2.2Vto5.5V
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 TheDevice
Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
ESD Protection Exceeds JESD 22
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Catalogue
FPGA / CPLD
Memory
MOS 
MCU 
DSP
OCEP
Secondary 
Other 
