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TCA4311DG4 Fiches technique(PDF) 2 Page - Texas Instruments |
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TCA4311DG4 Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 21 page TCA4311 SCPS173 – DECEMBER 2008........................................................................................................................................................................................... www.ti.com ORDERING INFORMATION TA PACKAGE(1)(2) ORDERABLE PART NUMBER TOP-SIDE MARKING SOIC – D Tape and reel TCA4311DR PR311 –40°C to 85°C MSOP – DGK Tape and reel TCA4311DGKR 3JS (1) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging. (2) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at www.ti.com. TERMINAL FUNCTIONS SOIC (D) OR MSOP (DGK) PACKAGE DESCRIPTION PIN NUMBER NAME Active-high chip enable pin. If EN is low, the TCA4311 is in a low current (<1 µA) mode. It also disables the rise-time accelerators, disables the bus precharge circuitry, drives READY low, isolates SDAIN 1 EN from SDAOUT and isolates SCLIN from SCLOUT. EN should be high (at VCC) for normal operation. Connect EN to VCC if this feature is not being used. 2 SCLOUT Serial clock output. Connect this pin to the SCL bus on the card. 3 SCLIN Serial clock input. Connect this pin to the SCL bus on the backplane. 4 GND Supply ground Connection flag/rise-time accelerator control. READY is low when either EN is low or the start-up 5 READY sequence described in the operation section has not been completed. READY goes high when EN is high and start-up is complete. Connect a 10-k Ω resistor from this pin to VCC to provide the pull up. 6 SDAIN Serial data input. Connect this pin to the SDA bus on the backplane. 7 SDAOUT Serial data output. Connect this pin to the SDA bus on the card. Supply power. Main input power supply from backplane. This is the supply voltage for the devices on 8 VCC the backplane I2C busses. Connect pullup resistors from SDAIN and SCLIN (and also from SDAOUT and SCLOUT) to this pin. Place a bypass capacitor of at least 0.01 µF close to this pin for best results. 2 Submit Documentation Feedback Copyright © 2008, Texas Instruments Incorporated Product Folder Link(s): TCA4311 |
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