NXP Semiconductors PTN3380BBS,518

Overview

PTN3380BBS,518 from NXP Semiconductors is a DVI/HDMI level shifter IC that converts four lanes of low-swing AC-coupled differential inputs (DisplayPort/PCIe compliant) to DVI v1.0 and HDMI v1.3a–compliant TMDS outputs at up to 1.65 Gbit/s per lane. It integrates a 5 V DC regulator, HPD level shifting, and I²C-based DDC level shifting between 3.3 V source and 5 V sink sides - enabling DisplayPort-to-DVI adapter designs with minimal external components.

For engineers reviewing the PTN3380BBS,518 datasheet, PTN3380BBS,518 pinout, PTN3380BBS,518 application, or PTN3380BBS,518 equivalent, key selection considerations include its integrated 5 V regulator (75 mA output), back-current-safe TMDS/DDC/HPD interfaces, 48-pin HVQFN package, OE_N–controlled power-down mode, and REXT-referenced current-steering output accuracy.

Technical Context

The PTN3380BBS,518 implements transparent, re-timing-free level translation across three signal domains: four high-speed TMDS lanes using self-biasing 50 Ω differential inputs and open-drain current-steering outputs; a bidirectional DDC channel using pass-gate level shifting with DDC_EN control; and a non-inverting HPD buffer with integrated 200 kΩ sink-side pull-down. All sink-side terminals (OUT_Dx, SCL_SINK, SDA_SINK, HPD_SINK) feature back-drive protection.

Its on-die 5 V regulator accepts 3.3 V input (±10 %), delivers ±300 mV accuracy at up to 75 mA, requires only two external capacitors (330 nF between CP/CN, 1 µF on V5OUT), and remains active whenever valid VDD is present. The device operates from −40 °C to +85 °C and consumes 30 mA typical in active mode with no load.

Key Specifications

Pinout & Package

PTN3380BBS,518 is housed in a 7 mm × 7 mm × 0.85 mm HVQFN48 package with exposed thermal pad. All GND pins (1, 5, 12, 18, 24, 27, 31, 37, 43) and the center pad must be connected to system ground for electrical integrity and thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DVI level shifter applications.

Compared with PTN3360BBS,518 and TPD12S016RGER, PTN3380BBS,518 uniquely combines DVI/HDMI TMDS translation, integrated 5 V regulation, and configurable DDC isolation - making it the only single-chip solution for DisplayPort-to-DVI adapters requiring autonomous power and robust hot-plug handling.

Availability

PTN3380BBS,518 is available at Aetrix Electronics and suitable for DisplayPort-to-DVI adapters, multi-mode display source interfaces, hot-plug–enabled video gateways, and ESD-robust external monitor interfaces requiring stable component supply across production lifecycles.

Supply support for PTN3380BBS,518 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 company specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with leadership in interface, analog, and power management ICs.

The PTN3380BBS,518 belongs to NXP's display interface product line, engineered specifically for high-speed, low-power level shifting in compact video adapter and dongle applications - emphasizing integration, reliability, and compliance with DVI/HDMI/DisplayPort interop standards.

FAQ

What is the maximum data rate supported by PTN3380BBS,518?

The PTN3380BBS,518 supports up to 1.65 Gbit/s per lane, corresponding to a 165 MHz character clock - sufficient for DVI v1.0 and HDMI v1.3a video formats including 1080p60. This rate is validated across all four TMDS lanes simultaneously under recommended operating conditions (3.3 V ±10 %, −40 °C to +85 °C).

Does PTN3380BBS,518 require external termination resistors on the TMDS inputs?

No, PTN3380BBS,518 includes integrated 50 Ω self-biasing termination resistors on all IN_Dx differential inputs. These terminations are automatically enabled when OE_N is asserted (LOW) and disabled in standby mode, eliminating the need for external resistors and simplifying layout in space-constrained dongle designs.

How does the integrated 5 V regulator in PTN3380BBS,518 operate?

The PTN3380BBS,518's on-die 5 V regulator derives output from the 3.3 V VDD supply, delivering up to 75 mA with ±300 mV accuracy. It requires only two external capacitors: 330 nF between CP and CN pins, and 1 µF on V5OUT. The regulator activates whenever valid 3.3 V is applied to any VDD pin and includes short-circuit and overcurrent protection.

Can PTN3380BBS,518 be used in HDMI applications?

Yes, PTN3380BBS,518 outputs comply with HDMI v1.3a TMDS electrical specifications and supports HDMI data rates up to 1.65 Gbit/s per lane. However, for dedicated HDMI-to-HDMI or HDMI-to-DisplayPort applications, NXP recommends PTN3381B - which adds HDMI-specific features like HDCP-ready signaling not present in PTN3380BBS,518.

What is the function of the REXT pin on PTN3380BBS,518?

The REXT pin (Pin 6) on PTN3380BBS,518 sets the current reference for TMDS output drivers. Connecting a 10 kΩ ±1 % resistor to GND achieves optimal output voltage swing accuracy. Leaving REXT open or tying it to VDD/GND still enables operation but reduces accuracy of VOL, differential swing, and edge timing across voltage/temperature ranges.