NXP Semiconductors PTN3311D,112

Overview

PTN3311D,112 from NXP Semiconductors (formerly Philips) is a high-speed serial logic translator IC that converts PECL-level differential inputs to LVDS-level differential outputs. It operates from a single +3.3 V supply, supports up to 800 Mbps data throughput, and is housed in an 8-pin SO package (SOT96-1). It enables interoperability between optical transceiver modules and ASICs in telecom backplane interfaces.

For engineers reviewing the PTN3311D,112 datasheet, PTN3311D,112 pinout, PTN3311D,112 application, or PTN3311D,112 equivalent, key selection criteria include its PECL-to-LVDS translation direction, 3.0–3.6 V supply range, –40 °C to +85 °C operating temperature, differential input/output architecture, and compatibility with SONET/SDH and ATM systems.

Technical Context

The PTN3311D,112 implements a unidirectional PECL-to-LVDS translation path with matched differential input (VINP/VINN) and LVDS output (VOUTP/VOUTN) stages. Its internal circuitry maintains signal integrity at 800 Mbps typical throughput while meeting EIA-644 LVDS and PECL voltage level specifications.

It requires two independent ground pins (GND1, GND2) and two supply pins (VCC1, VCC2) for noise isolation between input and output domains. The device exhibits 1 ns to 3 ns propagation delay and ≤50 ps pulse skew, supporting precise timing alignment in high-speed serial backplanes.

Key Specifications

Pinout & Package

PTN3311D,112 is packaged in an 8-pin plastic small-outline (SO8) package per SOT96-1 outline: 3.9 mm body width, 1.27 mm lead pitch, surface-mount compatible.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed serial logic translation applications.

Compared with SN65LVDS32DR and MAX9110ESA+, the PTN3311D,112 uniquely combines native PECL input compatibility, 800 Mbps throughput, and low 12 mA supply current in a proven telecom-qualified SO8 package - making it optimal for OC-48/STM-16 optical interface bridging.

Availability

PTN3311D,112 is available at Aetrix Electronics and suitable for high-speed networking, telecom infrastructure, and optical transceiver module design requiring stable component supply and long-term obsolescence management.

Supply support for PTN3311D,112 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 formed from the spin-off of Philips Semiconductors in 2006, specializing in secure connectivity solutions for automotive, industrial, and communications markets.

The PTN3311D,112 belongs to NXP's high-speed interface translator product line, designed specifically to resolve signal-level incompatibility between optical transceiver modules and host ASICs in telecom and datacom equipment.

FAQ

What is the primary function of the PTN3311D,112?

The PTN3311D,112 is a unidirectional high-speed serial logic translator that converts PECL differential input signals to LVDS differential output signals. It enables seamless interoperability between PECL-based optical components (e.g., laser drivers) and LVDS-compatible host ASICs. Its design eliminates the need for discrete level-shifting circuits in telecom modules, and the PTN3311D,112 maintains signal fidelity up to 800 Mbps with low propagation skew and controlled output swing.

Does the PTN3311D,112 support bidirectional translation?

No, the PTN3311D,112 supports only unidirectional PECL-to-LVDS translation. It is not designed for reverse (LVDS-to-PECL) operation - that function is implemented by the pin-compatible PTN3310D,112 variant. The PTN3311D,112 has dedicated PECL input pins (VINP/VINN) and LVDS output pins (VOUTP/VOUTN), with no internal circuitry enabling reverse signal flow. Using PTN3311D,112 in reverse configurations may result in undefined behavior or damage.

What package type is used for the PTN3311D,112?

The PTN3311D,112 is supplied in an 8-pin plastic small-outline (SO8) package conforming to SOT96-1 mechanical outline: 3.9 mm body width, 1.27 mm lead pitch, and gull-wing leads for surface-mount assembly. This package is RoHS-compliant and qualified for reflow soldering per J-STD-020. The PTN3311D,112 does not use TSSOP or QFN variants - those are assigned to different orderable part numbers (e.g., PTN3311DP).

Can the PTN3311D,112 operate from a 2.5 V supply?

No, the PTN3311D,112 is specified only for 3.0 V to 3.6 V operation. Its PECL input receiver and LVDS output driver stages are optimized for 3.3 V nominal supply, and operation below 3.0 V violates the recommended operating conditions. Attempting 2.5 V operation risks failure to meet VIH/VIL thresholds, reduced output swing, increased jitter, or non-functional behavior. The PTN3311D,112 must be powered within its validated 3.0–3.6 V range.

Is the PTN3311D,112 pin-compatible with the PTN3310D,112?

Yes, the PTN3311D,112 and PTN3310D,112 share identical pinouts and package dimensions (SO8, SOT96-1), allowing direct PCB footprint reuse. However, their internal signal paths differ: PTN3310D,112 translates LVDS-in to PECL-out, while PTN3311D,112 performs PECL-in to LVDS-out. Swapping them without updating routing or signal assignments will cause interface failure. The PTN3311D,112 and PTN3310D,112 are functional complements-not drop-in replacements.