LTC4307-1 High De nition Multimedia Interface (HDMI) Level- Shifting 2-Wire Bus Buffer DESCRIPTIO FEATURES Bidirectional Buffer for Display Data Channel (DDC) The LTC4307-1 is a 2-wire bus buffer that provides ca- Compliant with HDMI Speci cation Version 1.3 pacitance buffering between input and output. The HDMI DDC Capacitance Requirement speci cation requires that devices have less than 50pF of Level Translation Between 3.3V and 5V input capacitance on their DDC bus lines. The LTC4307-1s 5kV Human Body Model ESD Protection capacitance buffering feature, in conjunction with its 60mV Buffer Offset Independent of Load sub-10pF data and clock input capacitance, allows HDMI 2 Compatible with Non-Compliant V I C Devices components to easily meet the 50pF requirement and OL Isolates Input SDA and SCL Line from Output tolerate high capacitance on the internal bus. TM 2 2 Compatible with I C , I C Fast Mode and SMBus The LTC4307-1 also provides level-shifting between 3.3V READY Open-Drain Output and 5V systems to allow lower voltage HDMI transmitters, High Impedance SDA, SCL Pins for V = 0V CC receivers and EEPROM to interface to the 5V DDC bus. Small 8-Lead (3mm 3mm) DFN and 8-Lead MSOP READY is an open-drain digital output ag that indicates Packages whether or not the input and output busses are connected U and can interface to the HDMI hot plug detect (HPD) signal. APPLICATIO S When driven high, the ENABLE digital input allows the LTC4307-1 to connect after a stop bit or bus idle. Driving HDMI ENABLE low breaks the connection between the input and 3.3V/5V Level Translation output busses. Capacitance Buffer/Bus Extender , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 7032051, 6356140, 6650174 TYPICAL APPLICATIO Rising Edge from Asserted Low DVD PLAYER (SOURCE) TV (SINK) 1000 3.3V 5V 0.1F 800 EEPROM 1.8k 1.8k 10k 10k LTC4307-1 600 HDMI LOW HDMI TX V CC CABLE <50pF OFFSET IC SDAIN SDAOUT HDMI RX SDAOUT 400 IC SCLIN SCLOUT SDAIN ENABLE C DDC GROUND GND 200 0 0 100 200 300 400 500 600 43071 TA01a 100ns/DIV 43071 TA01b 43071fa 1 200mV/DIV U ULTC4307-1 ABSOLUTE AXI U RATI GS (Notes 1, 6) V to GND ................................................. 0.3V to 6V Storage Temperature Range CC SDAIN, SCLIN, SDAOUT, SCLOUT, DFN .................................................... 65C to 125C READY, ENABLE .......................................... 0.3V to 6V MSOP ................................................ 65C to 150C Maximum Sink Current (SDAIN, SCLIN, SDAOUT, Lead Temperature (Soldering, 10 sec) SCLOUT, READY) .............................................. 50mA MSOP ...............................................................300C Operating Temperature Range LTC4307C ................................................ 0C to 70C LTC4307I ............................................. 40C to 85C PIN CONFIGURATION TOP VIEW TOP VIEW ENABLE 1 8 V CC ENABLE 1 8 V SCLOUT 2 7 SDAOUT CC 9 SCLOUT 2 7 SDAOUT SCLIN SDAIN 3 6 SCLIN 3 6 SDAIN GND 4 5 READY GND 4 5 READY MS8 PACKAGE 8-LEAD PLASTIC MSOP DD PACKAGE T = 125C, = 200C/W 8-LEAD (3mm 3mm) PLASTIC DFN JMAX JA T = 125C, = 43C/W JMAX JA EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC4307CDD-1 PBF LTC4307CDD-1 TRPBF LDBP 8-Lead (3mm 3mm) Plastic DFN 0C to 70C LTC4307IDD-1 PBF LTC4307IDD-1 TRPBF LDBP 8-Lead (3mm 3mm) Plastic DFN 40C to 85C LTC4307CMS8-1 PBF LTC4307CMS8-1 TRPBF LTDBN 8-Lead Plastic MSOP 0C to 70C LTC4307IMS8-1 PBF LTC4307IMS8-1 TRPBF LTDBN 8-Lead Plastic MSOP 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *The temperature grade is identi ed by a label on the shipping container. For more information on lead free part marking, go to: