Diodes Incorporated PI6C5922504ZHIEX

Overview

PI6C5922504 from Diodes Incorporated is a 2.5 GHz, 1:4 LVDS fanout buffer with internal termination, designed for high-fidelity clock distribution in low-noise timing systems. It accepts LVDS, CML, SSTL, and LVPECL inputs; delivers four matched differential LVDS outputs with <20 ps output-to-output skew; operates from 2.5 V ±5% or 3.3 V ±10%; and supports -40°C to +85°C industrial temperature range.

For engineers reviewing the PI6C5922504 datasheet, PI6C5922504 pinout, PI6C5922504 application, or PI6C5922504 equivalent, key selection criteria include additive jitter (<0.05 ps RMS), input compatibility across multiple logic families, integrated AC-coupling biasing (VREF-AC), and TQFN-16 package suitability for dense high-speed PCB layouts.

Technical Context

The PI6C5922504 implements a fully differential, current-mode logic-based fanout architecture with on-die 100 Ω differential input termination and internal 100 Ω output load matching for LVDS. Its input stage supports both DC- and AC-coupled configurations via REF_IN+/REF_IN− and VREF-AC/VTH pins, enabling interoperability with oscillators, FPGAs, and SerDes PHYs without external bias networks.

Propagation delay is tightly controlled (300–570 ps) across voltage and temperature, and output common-mode voltage is stabilized at 1.15–1.35 V with <±100 mV variation. The EN pin provides synchronous output enable with internal 25 kΩ pull-up, ensuring glitch-free disable and fast recovery.

Key Specifications

Pinout & Package

PI6C5922504 is housed in a 16-pin, 3 mm × 3 mm, 0.5 mm pitch Thin Quad Flat No-Lead (TQFN) package with exposed thermal pad (ZH code). The ePad must be soldered to GND for optimal thermal performance (Θ_JA = 57.7 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICS853S01I and SY89851UMG, the PI6C5922504 uniquely combines 2.5 GHz LVDS operation, integrated AC-coupling biasing, and industrial temperature range in a thermally enhanced TQFN package-making it optimal for next-generation high-speed digital systems requiring minimal external components and guaranteed skew performance.

Availability

PI6C5922504 is available at Aetrix Electronics and suitable for PCIe Gen4/5 reference clock distribution, 25G Ethernet PHY timing, and FPGA multi-clock domain synchronization requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant green packaging.

Supply support for PI6C5922504 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 PI6C5922504 belongs to Diodes' Precision Timing product line, engineered specifically for ultra-low-jitter clock distribution in high-speed serial interfaces-including PCIe, Ethernet, and JESD204B-where deterministic skew and phase noise control are critical.

FAQ

Can PI6C5922504 accept AC-coupled LVDS inputs without external bias resistors?

Yes. The device provides VREF-AC (pin 10) and VTH (pin 11) to establish proper common-mode bias for AC-coupled inputs. Connecting REF_IN+ and REF_IN− through 0.1 µF capacitors to the input source, then tying VTH to VREF-AC, eliminates need for external pull-up/down resistors-reducing component count and improving layout symmetry.

What is the recommended power supply decoupling for PI6C5922504?

Each VDD pin (pins 7 and 14) requires a dedicated 0.1 µF ceramic capacitor placed as close as possible to the pin, with short traces to the GND plane. For improved high-frequency noise suppression, add a 1 µF bulk capacitor near the device. All decoupling capacitors must be mounted on the component side of the PCB per Diodes' layout guidelines.

Does PI6C5922504 support hot-plug or glitch-free output enable/disable?

Yes. The EN pin (pin 8) provides synchronous output enable with internal 25 kΩ pull-up. When pulled low, all LVDS outputs enter high-impedance state without glitches or overshoot. Propagation delay from EN assertion to output activation is specified at ≤570 ps, ensuring deterministic timing during power sequencing or dynamic clock gating.

How does PI6C5922504 handle CML input signals?

The device accepts CML inputs directly in AC-coupled configuration: connect the CML source to REF_IN+ and REF_IN− via 0.1 µF capacitors, tie VTH to VREF-AC, and terminate the source with 50 Ω to VDD. This configuration recovers DC bias and ensures correct common-mode voltage-avoiding DC-coupled CML due to vendor-specific voltage level mismatches.