TCA9617A Level-Translating FM+ I2C Bus Repeater | TI.com

TCA9617A (ACTIVE)

Level-Translating FM+ I2C Bus Repeater

Level-Translating FM+ I2C Bus Repeater - TCA9617A
 

Recommended alternative parts

  • TCA9617B  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   This P2P device is an enhanced version of TCA9617A with Powered-Off High Impedance pins
  • TCA9803  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   This P2P device has improved performance (better signal integrity, faster rise times, slew rate control) and reduces external components required

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.

Features

  • 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)

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Parametrics Compare all products in I2C Level Shifters, Buffers, and Hubs

 
Number of Outputs
fSCLK (Max) (MHz)
VCC (Max) (V)
VCC (Min) (V)
Frequency (Max) (kHz)
Channel Width
Master Side I2C Bus Capacitance Supported (pF)
Slave Side I2C Bus Capacitance Supported (pF)
Features
Operating Temperature Range (C)
Package Group
Pin/Package
TCA9617A TCA9517 TCA9803
2     2     2    
1     0.4     0.4    
5.5     5.5     3.6    
0.8     0.9     0.8    
1000     400     400    
2     2     2    
550     400     400    
550     400     400    
Enable Pin
Low Voltage
Open-Drain I/O Type    
Enable Pin
Low Voltage
Open-Drain I/O Type    
Enable Pin
Low Voltage
Open-Drain I/O Type
Power Save Mode    
-40 to 85     -40 to 85     -40 to 85    
VSSOP | 8     SOIC | 8
VSSOP | 8    
VSSOP | 8    
8VSSOP     8SOIC
8VSSOP    
8VSSOP    

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