LTC4307CMS8-1#PBF

Signal Buffers, Repeaters, Splitters Overview

The LTC4307CMS8-1#PBF is a bidirectional 2-wire bus buffer designed for HDMI Display Data Channel (DDC) applications. It provides capacitance buffering with sub-10pF input capacitance to meet the HDMI specification requirement of less than 50pF on DDC lines. The device performs level translation between 3.3V and 5V systems, allowing lower voltage components to interface with the 5V DDC bus. Key electrical parameters include a supply voltage range of 2.3V to 5.5V, a typical supply current of 81mA at 5.5V, and an input-output offset voltage of 60mV. It supports I²C Fast Mode up to 600kHz and features ±5kV HBM ESD protection.

Signal Buffers, Repeaters, Splitters Feature Summary

• HDMI Specification Version 1.3 compliant DDC capacitance buffering
• Bidirectional level shifting between 3.3V and 5V logic levels
• Open-drain READY output for hot plug detect control
• High impedance pins when VCC is 0V

Signal Buffers, Repeaters, Splitters Applications

• HDMI receiver channels for capacitance buffering
• HDMI transmitter channels for capacitance buffering
• Level shifting between 3.3V EEPROMs and 5V DDC buses

Signal Buffers, Repeaters, Splitters Procurement Notes

Verify the specific ordering suffix matches the required package type and temperature grade. Confirm that the component is lead-free and RoHS compliant as indicated by the #PBF designation. Ensure the selected variant aligns with the system's operating temperature requirements before finalizing procurement.

Signal Buffers, Repeaters, Splitters Selection Notes

Select this part for HDMI designs requiring isolation between high-capacitance internal buses and low-capacitance external connectors. Choose the CMS8 package for surface mount assembly in MSOP-8 form factors. Verify compatibility with non-compliant I²C devices due to the low offset voltage characteristic.

Signal Buffers, Repeaters, Splitters Part Context

This component belongs to the LTC4307-1 series, which is specifically optimized for HDMI applications compared to the general-purpose LTC4307. Unlike the standard LTC4307, the -1 variant includes level-shifting capabilities and lacks stuck bus recovery features, as these are not required for HDMI compliance.

Signal Buffers, Repeaters, Splitters Replacement Considerations

LTC4307IMS8-1#PBF serves as a direct functional substitute with an extended industrial temperature range (-40°C to 85°C). Other family members like the LTC4307CDD-1#PBF offer different packaging but share similar core functionalities.