Diodes Incorporated PI6C5912006ZHIEX

Overview

PI6C5912006ZHIEX from Diodes Incorporated is a 6-output LVPECL fanout buffer with dual selectable differential/single-ended reference inputs, 2 GHz max output frequency, <0.01 ps typ additive phase jitter (156.25 MHz, 12 kHz–20 MHz), and 0.7 ns typical propagation delay. It serves as a low-skew clock distribution IC in high-speed networking switch backplanes.

For engineers reviewing the PI6C5912006ZHIEX datasheet, PI6C5912006ZHIEX pinout, PI6C5912006ZHIEX application, or PI6C5912006ZHIEX equivalent, key selection criteria include differential input flexibility, sub-30 ps output skew, LVPECL level-shifting supply separation, industrial temperature range (−40°C to +85°C), and TQFN-32 thermal performance.

Technical Context

The PI6C5912006 operates as a clock fanout buffer with two independent differential reference inputs (REF_IN0±, REF_IN1±), each with internal 50 Ω termination and dedicated VTH/VREF_AC bias outputs. Input selection is controlled by the LVCMOS/LVTTL-compatible IN_SEL pin, enabling dynamic switching between sources without external logic.

It delivers six matched LVPECL output pairs (Q0± to Q5±) with separate VDDO supply capability, ultra-low additive jitter (<0.01 ps RMS), and tightly controlled inter-output skew (13–30 ps). Propagation delay is <700 ps with <100 ps enable/disable timing for hot-swap clock management.

Key Specifications

Pinout & Package

Package: 32-pin TQFN (ZH), 5 mm × 5 mm, 0.5 mm pitch, exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVPECL fanout buffer applications.

Compared with IDT8T49N286A and NB3N551, the PI6C5912006ZHIEX uniquely balances 6-output fanout, 2 GHz bandwidth, dual-reference agility, and ultra-low additive jitter in a compact TQFN-32 - making it optimal for high-density, jitter-constrained telecom clock distribution without added synthesis complexity.

Availability

PI6C5912006ZHIEX is available at Aetrix Electronics and suitable for 10G/25G Ethernet switch fabric, CPRI radio base stations, and high-speed backplane computing requiring stable component supply and guaranteed long-term industrial temperature support.

Supply support for PI6C5912006ZHIEX 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance analog, logic, and timing solutions for industrial, computing, and communications markets.

The PI6C5912006 belongs to Diodes' Pericom® timing portfolio, engineered specifically for low-jitter clock distribution in high-speed serial data infrastructure - emphasizing signal fidelity, thermal efficiency, and design-in simplicity for telecom and data center applications.

FAQ

What input signal types does the PI6C5912006ZHIEX support?

The PI6C5912006ZHIEX accepts differential inputs (LVPECL, LVDS, CML, HCSL) and single-ended signals (LVCMOS, LVTTL) on both REF_IN0± and REF_IN1± pairs. Each input has internal 50 Ω termination and dedicated VTH/VREF_AC pins to configure bias points for AC-coupled interfaces - no external resistors required for standard LVPECL or LVDS drive.

How is output skew minimized across all six LVPECL channels?

Output skew is minimized through matched internal routing, identical output driver topologies, and symmetrical die layout. Measured skew is 13 ps typical and 30 ps maximum between any two Qx± outputs under identical load and supply conditions - verified across temperature and voltage corners in production test.

Can the PI6C5912006ZHIEX operate with different supply voltages on core and output stages?

Yes - the device supports independent VDD (core logic) and VDDO (output drivers) supplies. VDD may be 2.5 V or 3.3 V; VDDO can be set separately to match downstream receiver thresholds. This enables level-shifting between 2.5 V FPGA clock sources and 3.3 V ASIC clock inputs without external translators.

What PCB layout practices are recommended to achieve specified jitter performance?

To achieve <0.01 ps additive jitter, each VDD pin must have dedicated 0.1 µF ceramic + 1 µF tantalum bypass capacitors placed within 2 mm, connected directly to the ground plane via multiple vias. Differential traces should be length-matched to ±50 mil, impedance-controlled at 100 Ω, and isolated from noisy digital nets using ground guard traces.