Diodes Incorporated PI6C49X0210-AZHIEX

Overview

PI6C49X0210-AZHIEX from Diodes Incorporated is a high-performance 10-output CMOS fanout buffer with integrated crystal oscillator, supporting 10–50 MHz XTAL input and delivering up to 200 MHz single-ended clock outputs across mixed-voltage banks (1.5V/1.8V/2.5V/3.3V). It features ultra-low additive jitter (0.05 ps RMS), <50 ps output skew, and 2 ns propagation delay at 3.3 V - deployed in telecom backplanes and network switches for low-jitter clock distribution.

For engineers reviewing the PI6C49X0210-AZHIEX datasheet, PI6C49X0210-AZHIEX pinout, PI6C49X0210-AZHIEX application, or PI6C49X0210-AZHIEX equivalent, key selection criteria include multi-supply bank configuration, internal oscillator support, additive jitter performance, and IN_SEL[0:1]-controlled reference source switching between XTAL, REF0, and REF1.

Technical Context

The device integrates a fundamental-mode crystal oscillator (10–50 MHz, 12 pF on-chip load) with configurable differential or single-ended reference inputs selected via IN_SEL[0:1]. Its internal MUX routes either crystal (XIN/XOUT), REF0 (IN0/IN0#), or REF1 (IN1/IN1#) to the core timing path.

All 10 CLK outputs are independently powered by user-configurable VDDO banks, enabling simultaneous 1.5 V, 1.8 V, 2.5 V, and 3.3 V output domains driven from a common 2.5 V or 3.3 V core supply. ENABLE controls output tri-state with guaranteed 5-cycle enable/disable timing.

Key Specifications

Pinout & Package

PI6C49X0210-AZHIEX is housed in a 32-pin TQFN (ZH) package with 0.5 mm pitch, exposed thermal pad, and Pb-free/Green compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-voltage clock fanout applications.

Compared with ICS85310AMLF and PI6C4911502ZDIEX, PI6C49X0210-AZHIEX uniquely combines 10-output fanout, integrated 10–50 MHz crystal oscillator, and per-bank VDDO configurability - reducing component count, PCB area, and jitter accumulation in space-constrained industrial and telecom timing systems.

Availability

PI6C49X0210-AZHIEX is available at Aetrix Electronics and suitable for networking switches, telecom backplanes, data center routers, and industrial Ethernet gateways requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for PI6C49X0210-AZHIEX 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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for power management, signal integrity, and timing applications.

The PI6C49X series targets high-reliability clock distribution in networking, telecom, and industrial systems - designed to replace discrete oscillator + buffer combinations with integrated, low-jitter, multi-voltage solutions.

FAQ

What crystal specifications are required for the internal oscillator?

The PI6C49X0210-AZHIEX requires a fundamental-mode quartz crystal with 10–50 MHz frequency, 12 pF on-chip load capacitance, ≤50 Ω ESR, and 1 mW drive level. External load capacitors are not needed due to integrated tuning. Crystals must meet industrial-grade stability (±20 ppm) and operate across −40°C to +85°C.

How does the IN0#/IN1# pin function with single-ended inputs?

When used with single-ended reference clocks, IN0# and IN1# are internally biased at VDD/2 to establish common-mode voltage - eliminating external bias resistors. This allows direct connection of LVCMOS clocks to IN0 or IN1 while maintaining proper differential receiver operation and noise rejection.

Can all 10 outputs operate at different voltages simultaneously?

Yes - the four VDDO pins (pins 2, 6, 19, 23) define independent output voltage banks. Each bank powers two or three CLK outputs, allowing concurrent 1.5 V, 1.8 V, 2.5 V, and 3.3 V operation. Pin mapping is fixed per bank (e.g., CLK0–CLK2 share VDDO1), as specified in the datasheet pinout table.

What is the startup time after power-on and crystal enable?

Crystal startup time is 2–10 ms from 90% VDD rail stabilization, measured to first valid clock edge at any CLK output. This includes oscillator ring-up and internal PLL lock (if applicable). The ENABLE pin has no effect until startup completes - outputs remain inactive until oscillator is stable.