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TCA9406 Datasheet(PDF) 1 Page - Texas Instruments |
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TCA9406 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 19 page  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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