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SN74AVC2T872YFPR Scheda tecnica(PDF) 3 Page - Texas Instruments |
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SN74AVC2T872YFPR Scheda tecnica(HTML) 3 Page - Texas Instruments |
3 / 18 page SN74AVC2T872 www.ti.com........................................................................................................................................................................................... SCES710 – NOVEMBER 2008 TERMINAL FUNCTIONS BALL NO. NAME FUNCTION Input to enable pulldown resistors on B-side. PD_EN = Low will disconnect the pulldown resistors. A1 PD_EN PD_EN = High will connect the pulldown resistors. A2, B2 VCCA A-side supply voltage (1.1 V to 3.6 V) A3 VCCB B-side supply voltage (1.1 V to 3.6 V) B1 D+(A) USB data signal connected to host. USB data signal connected to peripheral with internal 120 k Ω resistor to GND that can be B3 D+(B) disconnected by PD_EN. C1 D–(A) USB data signal connected to host. C2, D2 GND Ground USB data signal connected to peripheral with internal 120 k Ω resistor to GND that can be C3 D–(B) disconnected by PD_EN. Direction control input. If DIR_POL = Low, then DIR = Low allows A to B data flow. D1 DIR If DIR_POL = High, then DIR = High allows A to B data flow. Direction polarity chooser. If DIR_POL = Low, then DIR = Low allows A to B data flow. D3 DIR_POL If DIR_POL = High, then DIR = High allows A to B data flow. FUNCTION TABLE INPUTS A-SIDE B-SIDE FUNCTION DIR_POL DIR L L Input Output A-to-B Data Flow L H Output Input B-to-A Data Flow H L Output Input B-to-A Data Flow H H Input Output A-to-B Data Flow B-SIDE PULLDOWN RESISTOR BEHAVIOR PULLDOWN RESISTOR VCCA VCCB PD_EN B-SIDE 0 V X X None 1.1 to 3.6 V 0 V X 120 k Ω to GND 1.1 to 3.6 V 1.1 to 3.6 V L None 1.1 to 3.6 V 1.1 to 3.6 V H 120 k Ω to GND Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): SN74AVC2T872 |
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