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TCA9406 Datasheet(PDF) 1 Page - Texas Instruments

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Part No. TCA9406
Description  2-BIT BIDIRECTIONAL 1MHz, I2C BUS AND SMBUS VOLTAGE-LEVEL TRANSLATOR
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TCA9406 Datasheet(HTML) 1 Page - Texas Instruments

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DCT OR DCU PACKAGE
(TOP VIEW)
1
SCL_B
8
2
7
V
CCB
3
6
OE
4
5
SDA_B
GND
V
CCA
SDA_A
SCL_A
YZP PACKAGE
(BOTTOM VIEW)
SDA_A
5
4
SCL_A
3 6
OE
V
CCA
2 7
V
CCB
GND
8
SCL_B
1
SDA_B
A1
B1
C1
D1
A2
B2
C2
D2
TCA9406
www.ti.com
SCPS221 – JULY 2010
2-BIT BIDIRECTIONAL 1MHz, I2C BUS AND SMBUS VOLTAGE-LEVEL TRANSLATOR WITH
8kV HBM ESD
Check for Samples: TCA9406
1
FEATURES
TYPICAL LEVEL-SHIFTER
APPLICATIONS
2
2-Bit Bidirectional Translator for SDA and SCL
I2C/SMBus
Lines in Mixed-Mode I2C Applications
UART
Lock-Up Free for Bus Isolation when OE
GPIO
Control Pin referring to VCCA with 5-V Input
Tolerant
Level Translation Range
1.8 V to 2.5 V/3.3 V/5 V
2.5 V to 2.5 V/3.3 V/5 V
3.3 V to 3.3 V/5 V
Internal10-k
Ω Pullup Resistor on Each Port
and Option to Add External Pullup Resistor if
Required
Provides Bidirectional Voltage Translation
With No Direction Pin
Ioff Support Partial Power Down (VCC= 0 V)
With 2 mA
High-Impedance Output SCL1, SDA1, SCL2,
and SDA2 Pins When OE = Low or VCC= 0 V
Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II
ESD Protection Exceeds JESD 22
A Port
2500-V Human-Body Model (A114-B)
250-V Machine Model (A115-A)
1500-V Charged-Device Model (C101)
B Port
8-kV Human-Body Model (A114-B)
250-V Machine Model (A115-A)
1500-V Charged-Device Model (C101)
DESCRIPTION/ORDERING INFORMATION
The TCA9406 is a dual bidirectional I2C-Bus and SMBus Voltage-Level translator with enable (OE) Input. It is
operational from 1.65 V to 3.6 V on A-Port and 2.3 V to 5.5 V on B-port. Enable (OE) input is referenced to
VCCA with a maximum input voltage tolerance of 4.6 V.
The TCA9406 can operate up to 24Mbps in push pull mode and 2Mbps with open drain mod. Its compatible
with a standard I2C bus 100 kHz, 400 kHz and 1 MHz at both sides of A-Port and B-Port.
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.
2
NanoStar is a trademark of Texas Instruments.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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