This document introduces the LTC4300A-1 bus buffer, which includes capacitance buffering to help devices pass the HDMI DDC input capacitance compliance test with ease. It also includes an enable pin for hardware control of the input-to-output connection and rise time accelerators for fast bus transitions. With an input capacitance of less than 10pF, the LTC4300A-1 allows the HDMI connector interface's capacitance buffering to easily pass the DDC input capacitance test limit, even if the internal capacitance of the channel is substantially higher.
The document introduces the Linear Technology LTC4300A-1, a 2-wire bus buffer designed to assist in passing HDMI DDC input capacitance compliance tests. The device features capacitance buffering between input and output, an enable pin for connection control, and rise time accelerators to ensure swift bus transitions.
| Input capacitance | sub-10pF |
|---|
Its capacitance buffering feature at the HDMI connector interface allows devices to pass the DDC input capacitance test limit of 50pF even if internal capacitance is higher.
The device can work with supply voltages ranging from 2.7V to 5.5V.
Yes, it can also be used in HDMI transmit channels with equal success.