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TCA9406DCTR
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TCA9406DCTR数据手册
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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, I
2
C 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
I
2
C/SMBus
Lines in Mixed-Mode I
2
C Applications
UART
Lock-Up Free for Bus Isolation when OE
GPIO
Control Pin referring to V
CCA
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-kΩ Pullup Resistor on Each Port
and Option to Add External Pullup Resistor if
Required
Provides Bidirectional Voltage Translation
With No Direction Pin
I
off
Support Partial Power Down (V
CC
= 0 V)
With 2 mA
High-Impedance Output SCL1, SDA1, SCL2,
and SDA2 Pins When OE = Low or V
CC
= 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 I
2
C-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
V
CCA
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 I
2
C 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.
2NanoStar 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.

TCA9406DCTR 数据手册

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