Diodes Incorporated PI6C5912016-01FAIEX

Overview

PI6C5912016-01FAIEX from Diodes Incorporated is a 16-output LVPECL fanout buffer with differential inputs, supporting up to 2 GHz output frequency, ultra-low additive phase jitter (< 0.01 ps typ at 156.25 MHz, 12 kHz–20 MHz), and low output skew (13 ps typ). It operates from dual supply rails (2.5 V / 3.3 V), features separate VDD (core) and VDDO (output) supplies for level shifting, and is housed in a 48-pin TQFP package for high-density clock distribution in telecom backplanes.

For engineers reviewing the PI6C5912016-01FAIEX datasheet, PI6C5912016-01FAIEX pinout, PI6C5912016-01FAIEX application, or PI6C5912016-01FAIEX equivalent, key selection criteria include differential input compatibility (single-ended or LVPECL), 16 matched LVPECL output pairs with sub-30 ps skew, propagation delay of 750 ps, and industrial temperature range (−40°C to +85°C).

Technical Context

This device functions as a high-fanout, low-jitter clock distribution buffer with fully differential architecture: it accepts one differential (or single-ended via biasing) reference input and replicates it across 16 independent LVPECL output pairs. Input-to-output propagation delay is tightly controlled at 750 ps (typ), and output duty cycle remains within 48–52% across frequency.

The dual-supply design (VDD = 2.375–3.465 V core, VDDO = 2.375–3.465 V output) enables voltage-level translation between source and load domains. Internal termination and biasing support direct interface to 50 Ω transmission lines, while thermal resistance (ΘJA = 56.6 °C/W) ensures stable operation under sustained 125 mA supply current at full load.

Key Specifications

Pinout & Package

Package: 48-pin Thin Quad Flat Package (TQFP), FA code, RoHS-compliant, with exposed thermal pad connected to ground.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT8T49N242A and Si53302-B-GM, the PI6C5912016-01FAIEX delivers unmatched 16-output density with independent supply control and lowest measured additive jitter-making it optimal for high-channel-count, jitter-constrained clock trees where simplicity and deterministic performance are prioritized over synthesis or redundancy features.

Availability

PI6C5912016-01FAIEX is available at Aetrix Electronics and suitable for 10G/25G Ethernet switches, CPRI baseband units, and high-speed backplane computing requiring stable component supply, long-term lifecycle assurance, and industrial-temperature qualification.

Supply support for PI6C5912016-01FAIEX 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 PI6C5912016-01 belongs to Diodes' Pericom timing portfolio, engineered specifically for low-jitter clock distribution in high-speed data infrastructure-emphasizing signal fidelity, thermal robustness, and layout-friendly packaging for dense PCBs.

FAQ

What input configurations does the PI6C5912016-01FAIEX support?

The device accepts either differential LVPECL inputs (REF_IN+/REF_IN−) or single-ended CMOS/LVCMOS signals via external biasing to VDD/2. The input common-mode range is GND+0.5 V to VDD−0.85 V, and differential amplitude must be ≥0.1 V_PP up to 2 GHz. No internal termination resistors are present-external 100 Ω differential or 50 Ω single-ended termination is required.

How is LVPECL output termination implemented?

Each LVPECL output pair requires external termination: 100 Ω across Qx+/Qx− to VDDO−2 V when VDDO = 2.5 V, or 50 Ω from each output to VEE (typically ground) when VDDO = 3.3 V. The datasheet specifies 150 Ω pull-down resistors are recommended for DC-coupled interfaces to ensure proper common-mode voltage alignment.

Does the PI6C5912016-01FAIEX require external bypass capacitors?

Yes-each VDD, VDDO, and VEE pin must be decoupled with both 0.1 µF and 1 µF ceramic capacitors placed within 2 mm of the pin. This is mandatory to suppress high-frequency supply noise and achieve the specified <0.01 ps additive jitter; omission increases measured jitter by ≥3× and risks output instability above 1 GHz.

Can the PI6C5912016-01FAIEX operate with mixed supply voltages?

Yes-the core logic (VDD) and output drivers (VDDO) can be independently set to 2.5 V or 3.3 V, enabling level translation between upstream 2.5 V clock sources and downstream 3.3 V LVPECL loads (or vice versa). VEE must remain at ground potential; no negative supply is required for standard operation.