TCA9617A Datasheet, PDF (1/17 Pages) Texas Instruments – LEVEL-TRANSLATING FM+ I2C BUS REPEATER

TCA9617A
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LEVEL-TRANSLATING FM+ I²C BUS REPEATER
Check for Samples: TCA9617A
SCPS244 – JUNE 2013
FEATURES
1
•2 Two-Channel Bidirectional Buffer
• 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
• Accommodates Standard Mode and Fast Mode
I²C Devices and Multiple Masters
• Powered-Off High-Impedance I²C Pins
• 1 Mhz FastMode+ I²C Bus
• 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)
DGK PACKAGE
(TOP VIEW)
V
CCA
1
SCLA 2
SDAA 3
GND 4
8
V
CCB
7 SCLB
6 SDAB
5 EN
DESCRIPTION
This dual bidirectional I²C™ buffer is operational at 2.2 V to 5.5 V.
The TCA9617A is a BiCMOS integrated circuit 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, thus
allowing two buses of 400-pF 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.
ORDERING INFORMATION
For package and ordering information, see the Package Option Addendum at the end of this document.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
I²C is a trademark of NXP B.V. Corporation.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated