The MAX3816A DDC/I2C extender is designed to compensate for excessive load capacitance of long DVI, HDMI, and VGA cables. It restores signal integrity bidirectionally for both DDC clock and data over cable distances up to 60 meters. The MAX3816A features compensation for cable capacitance up to 3000pF, typically exceeding 5000pF. It detects state-change assertion by the logical 'AND' of the source side and display side, and asserts the new state with a rail-to-rail slew-rate-limited driver capable of meeting I2C rise and fall time requirements. A holdoff period of 2.5µs prevents subsequent state changes while the cable channel settles. The MAX3816A consumes 25mW under full load at 100kbps (excluding pullup resistors) and is available in a 16-pin TSSOP package. It operates from 0°C to +70°C.
The MAX3816A is a 2‑wire I²C extender designed to carry DDC signals for DVI™, HDMI™, and VGA interfaces. It compensates for cable capacitance up to 3000 pF and restores signal integrity bidirectionally, allowing cable runs of up to 60 meters.
The device operates from a 3.0 V to 5.5 V supply, consumes 25 mW at 100 kbps, and includes built‑in termination and holdoff timing (2.5 µs) to suppress reflections. It is offered in a 16‑pin TSSOP package and supports both parallel and serial operating modes.
| Power Consumption (100 kbps) | 25 mW (excluding pull‑up resistors) |
|---|---|
| Cable Capacitance Compensation | Up to 3000 pF |
| Package | 16‑pin TSSOP |
It can extend DDC/I²C signals over up to 60 meters of DVI, HDMI, or VGA cable.
It consumes 25 mW, not counting the pull‑up resistors.