PTN3360DBS/S900,51

Overview

The PTN3360DBS/S900,51 is a high-speed level shifter that converts four lanes of low-swing AC-coupled differential input signals to DVI v1.0 and HDMI v1.4b compliant open-drain current-steering differential output signals. It supports up to 3.0 Gbit/s per lane for 4K x 2K video formats. The device translates HPD signals from 5 V sink-side to 3.3 V source-side and provides active buffering with rise time acceleration for the DDC channel between 3.3 V and 5 V domains. Powered by a single 3.3 V supply (3.0 V to 3.6 V), it consumes 70 mA typically in active mode and 5 mA in standby. It features back-current-safe outputs, ESD resilience of 6 kV HBM/1 kV CDM, and is housed in a 48-terminal HVQFN48 package.

Feature Summary

• Translates low-swing AC-coupled differential inputs to TMDS-type DC-coupled outputs compliant with DVI v1.0 and HDMI v1.4b specifications.
• Provides active buffering and voltage translation for the DDC channel with rise time acceleration on the sink-side ports.
• Includes programmable equalizer settings via the EQ5 pin to optimize signal integrity across varying cable lengths.
• Features back-power safe designs on all sink-side terminals to prevent backdrive current when the device is unpowered.

Applications

• PC motherboard and graphics card display interfaces
• Docking stations requiring multi-mode display connectivity
• DisplayPort to HDMI adapters supporting 4K x 2K and 3D video formats
• DisplayPort to DVI adapters designed to drive long cables

Procurement Notes

Verify the specific ordering suffix S900,51 against the manufacturer's official documentation to confirm packaging details such as tape and reel quantity or tray configuration. Ensure the component matches the HVQFN48 package dimensions and thermal pad requirements specified in the datasheet for proper PCB integration and heat dissipation.

Selection Notes

Select this component when interfacing multi-mode display sources with PCI Express electrical signaling to sinks requiring standard DVI or HDMI electrical compliance. Consider the integrated 50 Ω termination resistors and the need for an external 10 kΩ reference resistor on the REXT pin for optimal output voltage swing accuracy. Evaluate the board-strapped EQ5 settings to match the specific channel loss characteristics of the target application.

Part Context

The PTN3360D series serves as an enhanced HDMI and DVI level shifter, superseding the PTN3360B model. It offers improved high-speed performance through the inclusion of a programmable equalizer. This device enables chipset vendors to implement reconfigurable I/Os on multi-mode display source devices, allowing support for multiple display standards while minimizing the number of required I/O pins.

Replacement Considerations

The PTN3360B is the predecessor model to the PTN3360D. While functionally similar, the PTN3360D provides enhanced high-speed performance due to its integrated programmable equalizer. Verify if the fixed equalization of the older model meets the specific signal integrity requirements of the new design before substituting.

FAQ

How does the PTN3360D handle power states when the display sink is connected but the device is unpowered?

The device features back-current-safe designs on all sink-side main link, DDC, and HPD terminals. This prevents backdrive current from flowing into the device's power supply when the PTN3360D is unpowered but the monitor is active.

What is the function of the EQ5 pin?

The EQ5 pin allows for board-strapping of five different equalizer settings. These settings range from 0 dB to 7 dB attenuation to compensate for signal loss in the transmission path, optimizing performance for various cable lengths.

Does the PTN3360D re-time the data signals?

No, the PTN3360D acts as a transparent level shifter. It contains no state machines, latches, or clocks, and does not re-time any data. No software configuration or reset is required for operation.