NXP Semiconductors PTN3360DBS/S900,51

Overview

PTN3360DBS/S900,51 from NXP Semiconductors is a high-speed HDMI/DVI level shifter IC that converts four lanes of low-swing AC-coupled differential inputs (DisplayPort/PCIe-compliant) to DVI v1.0 and HDMI v1.4b–compliant TMDS outputs at up to 3.0 Gbit/s per lane, supporting 4K × 2K, 3D, and 36-bit deep color video transport. It integrates active DDC buffering with I²C-level shifting (3.3 V ↔ 5 V), non-inverting HPD translation, and programmable equalization. Used in multi-mode display source interfaces where pin count and electrical compatibility across standards are critical.

For engineers reviewing the PTN3360DBS/S900,51 datasheet, PTN3360DBS/S900,51 pinout, PTN3360DBS/S900,51 application, or PTN3360DBS/S900,51 equivalent, this page delivers verified functional role, exact pin-level circuit behavior, real-world timing constraints (e.g., <250 ps inter-pair skew), power-saving enable logic (OE_N/ DDC_EN truth table), and validated alternatives for HDMI/DVI bridge designs requiring back-current-safe sink-side operation and 18 m DDC bus extension.

Technical Context

The PTN3360DBS/S900,51 implements transparent, re-timing–free level translation: its four self-biasing differential input lanes (IN_D1± to IN_D4±) accept DisplayPort v1.2/PCIe v1.1–compliant signals with integrated 50 Ω termination, while outputting open-drain current-steering TMDS signals compliant with HDMI v1.4b and DVI v1.0. Each lane supports 300 MHz character clock (3.0 Gbit/s) with ≤10 ps intra-pair and ≤250 ps inter-pair skew.

Its DDC channel uses active I²C-bus buffer architecture with rise time acceleration on SCL_SINK/SDA_SINK, enabling reliable operation up to 1400 pF load or 18 m cable length; HPD translation is non-inverting with integrated 200 kΩ pull-down on HPD_SINK. Power control is split: OE_N disables TMDS paths only, while DDC_EN independently enables/disables DDC buffering - both support standby current <5 mA.

Key Specifications

Pinout & Package

PTN3360DBS/S900,51 is housed in a 48-terminal HVQFN48 package (7 mm × 7 mm × 0.85 mm) with exposed thermal pad. All GND pins (1, 5, 12, 18, 24, 27, 31, 36, 37, 43) and the center thermal pad must be soldered to PCB ground for proper thermal dissipation, electrical reference, and EMI control.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HDMI/DVI level shifting applications.

Compared with TI TPD12S016, PTN3360DBS/S900,51 delivers full 4-lane 3.0 Gbit/s operation and active DDC buffering - essential for DP-to-HDMI adapters. Against PTN3361B, it trades bandwidth for proven stability in existing 4K designs and lower system-level EQ tuning complexity.

Availability

PTN3360DBS/S900,51 is available at Aetrix Electronics and suitable for PC graphics cards, docking stations, DP-to-HDMI adapters, and active DVI cables requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial and consumer display applications.

Supply support for PTN3360DBS/S900,51 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in interface, analog, and mixed-signal IC design.

The PTN3360DBS/S900,51 belongs to NXP's display interface product line, engineered specifically to solve multi-standard video I/O consolidation in space-constrained, power-sensitive systems - enabling single-chip support for DisplayPort, HDMI, and DVI without sacrificing electrical compliance or signal integrity.

FAQ

What is the maximum supported data rate per lane for PTN3360DBS/S900,51?

The PTN3360DBS/S900,51 supports up to 3.0 Gbit/s per lane, corresponding to a 300 MHz character clock. This enables full compliance with HDMI v1.4b for 4K × 2K resolution, 3D video formats, and 36-bit deep color modes. The device maintains ≤250 ps inter-pair skew and ≤10 ps intra-pair skew at this rate, ensuring signal integrity without re-timing.

Does PTN3360DBS/S900,51 require external termination resistors on its differential inputs?

No, PTN3360DBS/S900,51 integrates 50 Ω termination resistors for all four differential input pairs (IN_D1± to IN_D4±). These terminations are automatically enabled only when OE_N is asserted LOW; they switch to high-impedance when OE_N is HIGH. No external termination is needed, simplifying layout and reducing BOM count.

How does the DDC channel in PTN3360DBS/S900,51 handle I²C-bus rise time limitations?

The PTN3360DBS/S900,51 implements rise time acceleration on the sink-side SCL_SINK and SDA_SINK pins, enabling reliable I²C-bus operation up to 1400 pF load or 18 m cable length. This feature isolates source-side bus capacitance, allowing the system to meet HDMI DDC timing specifications even with long or heavily loaded cables - no external redriver required.

Can PTN3360DBS/S900,51 operate safely when the HDMI/DVI sink is powered but the PTN3360DBS/S900,51 itself is unpowered?

Yes, PTN3360DBS/S900,51 features back-current-safe design on all sink-side terminals - including OUT_Dx outputs, SCL_SINK/SDA_SINK, and HPD_SINK. When unpowered, it sinks <10 µA leakage current and blocks backdrive from the sink's 3.3 V or 5 V rails, preventing damage or unintended power-up of the source system.

What is the function of the REXT pin on PTN3360DBS/S900,51, and what value resistor is recommended?

The REXT pin (pin 6) sets the current reference for the TMDS output drivers. A 10 kΩ ±1 % resistor from REXT to GND is recommended for optimal 500 mV single-ended output voltage swing accuracy across temperature and supply voltage. Direct ties to VDD or GND are permitted but reduce swing accuracy - acceptable for non-critical applications where calibration is not required.