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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Buffers, Drivers

Diodes Incorporated PI6C49X0210ZHIEX

Name: PI6C49X0210ZHIEX
Brand: Diodes Incorporated
SKU: PI6C49X0210ZHIEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI6C49X0210ZHIEX

Manufacturer:: Diodes Incorporated

Category:: Clock Buffers, Drivers

Package:: 32-VFQFN Exposed Pad

Datasheet:: PI6C49X0210ZHIEX.pdf

Description:: IC CLK BUFFER 3:10 200MHZ 32TQFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PI6C49X0210ZHIEX from Pericom Semiconductor is a high-performance 10-output CMOS fanout buffer with integrated crystal oscillator, supporting 10–50 MHz XTAL input and up to 200 MHz output frequency. It operates at 2.5V or 3.3V core supply with user-selectable output VDD banks (1.5V/1.8V/2.5V/3.3V), delivers ultra-low additive jitter of 0.05 ps (typ.), and targets low-skew clock distribution in multi-voltage networking systems.

For engineers reviewing the PI6C49X0210ZHIEX datasheet, PI6C49X0210ZHIEX pinout, PI6C49X0210ZHIEX application, or PI6C49X0210ZHIEX equivalent, this device serves as a multi-voltage clock fanout solution requiring precise jitter control, flexible output voltage configuration, differential/single-ended reference selection, and crystal-based timing stability in telecom backplanes and switch fabric designs.

Technical Context

The PI6C49X0210 integrates a fundamental-mode crystal oscillator (10–50 MHz) and a 1:10 fanout buffer with programmable input source selection (XTAL, REF0, REF1) via IN_SEL[1:0] pins. Its internal MUX supports both single-ended and differential reference inputs, with internal biasing for single-ended operation using VDD/2.

It implements independent output power domains per bank, enabling mixed-supply operation (e.g., 3.3V core with 1.5V outputs), and features active-high ENABLE control with 5-cycle enable/disable timing. Output skew is tightly controlled at ≤80 ps (typ.) across all 10 CLK outputs under matched loading and thermal conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output count	10 single-ended CMOS clock outputs (CLK0–CLK9)
Max output frequency	200 MHz - supports high-speed SerDes clocking and DDR interface timing
Additive RMS jitter	0.05 ps (12 kHz–20 MHz) - preserves signal integrity in jitter-sensitive PHY layers
Output skew	≤80 ps (typ.) - ensures synchronous sampling across multiple ASIC/FPGA clock domains
Crystal input range	10–50 MHz fundamental mode - compatible with standard telecom and networking crystals (e.g., 25 MHz, 12.5 MHz)
Core supply voltage	2.5 V or 3.3 V ±5% - dual-voltage support simplifies integration into mixed-rail systems
Output supply options	Configurable per bank: 1.5 V / 1.8 V / 2.5 V / 3.3 V - enables direct interfacing with diverse I/O standards (LVCMOS15, LVCMOS18, etc.)
Operating temperature	−40°C to +85°C - qualified for industrial-grade networking equipment deployment

Pinout & Package

Package: 32-pin TQFN (ZH), 5 mm × 5 mm, 0.5 mm pitch, Pb-free and RoHS-compliant.

Pin	Circuit Role	Design Meaning
1,3,5,7,8,17,18,20,22,24	CLK0–CLK9	10 buffered clock outputs; each independently terminated to VDDO/2 for 50 Ω impedance matching
2,6,19,23	VDDO	Output power supply pins - grouped by voltage bank; must be decoupled with 0.1 µF + 1 µF capacitors
4,9,16,21,25,32	GNDO	Output ground return - separate from core ground to minimize noise coupling into clock outputs
10	VDD	Core logic supply - powers internal oscillator, MUX, and buffer logic; requires dedicated 0.1 µF + 1 µF bypassing
11,12	XIN/XOUT	Crystal oscillator interface - connects directly to fundamental-mode quartz crystal (10–50 MHz, 18 pF load)
13,14,28,27	IN0/IN0#/IN1/IN1#	Differential reference inputs - support LVDS/LVPECL-compatible signals or single-ended clocks with internal VDD/2 bias
29,30	IN_SEL0/IN_SEL1	Input selection control - sets MUX to choose XTAL, REF0, or REF1 as clock source (logic levels define priority)
31	ENABLE	Active-high output enable - places all CLK outputs in high-impedance state when low; 5-cycle latency on assertion/deassertion

Key Features

Feature	Design Value
Multi-voltage output banks	Five configurable VDDO combinations (e.g., 3.3V core / 1.5V outputs) eliminate level-shifter ICs in mixed-I/O systems
Ultra-low additive jitter	0.05 ps RMS (12 kHz–20 MHz) - maintains <100 fs total jitter budget when cascading with low-noise sources
Input flexibility	Single-ended or differential reference selection via hardware pins - no configuration register or I²C required
Low propagation delay	~2 ns (typ. @ 3.3 V) - enables tight timing closure in high-speed clock trees with minimal phase offset
Industrial temperature range	−40°C to +85°C - validated for continuous operation in carrier-grade switches and base station timing modules
Integrated crystal oscillator	Eliminates external oscillator component and associated layout complexity while maintaining 20 ppm frequency accuracy

Applications

Layer-2 Ethernet Switch Fabric

Optical Line Card Timing

Use Scenario: Distributing synchronized 125 MHz clock to 10+ MAC/PHY devices across a 1RU switch chassis with mixed 1.8 V and 3.3 V I/O rails.

IC Role / Device Role / Timing Role: Fanout buffer with integrated XTAL oscillator provides jitter-clean, multi-voltage clock replication without external timing components.

Use Value: Reduces BOM count by eliminating discrete oscillators and level shifters while maintaining sub-100 fs additive jitter across all outputs.

Use Scenario: Clocking multiple 10G/25G SERDES lanes on an OTN line card where each lane requires independent 156.25 MHz or 155.52 MHz clocks at different voltage levels.

IC Role / Device Role / Timing Role: Multi-bank voltage-configurable fanout buffer supplies precisely aligned clocks to diverse SerDes blocks (e.g., 1.8 V for PHY, 3.3 V for control logic).

Use Value: Enables single-chip clock distribution with ≤80 ps inter-output skew, meeting SONET/OTN jitter compliance (GR-1244-CORE) without external skew compensation.

Backplane-Based Server Interconnect

Industrial Ethernet Controller Timing

Use Scenario: Providing low-jitter 100 MHz system clock to CPU, memory controller, and PCIe root complex on a high-density compute blade with 2.5 V and 1.5 V subsystems.

IC Role / Device Role / Timing Role: Core-timed fanout buffer with selectable 2.5 V core and 1.5 V output banks drives heterogeneous SoC interfaces simultaneously.

Use Value: Achieves <0.1 ps/cycle period jitter accumulation over 10 outputs, preserving setup/hold margins for DDR4-2400 and PCIe Gen3 receivers.

Use Scenario: Generating deterministic 50 MHz and 25 MHz clocks for real-time EtherCAT slave controllers operating in harsh factory environments (−40°C to +85°C).

IC Role / Device Role / Timing Role: Industrial-grade fanout buffer with crystal oscillator ensures stable timing without external crystal layout sensitivity or temperature drift compensation.

Use Value: Maintains ±20 ppm frequency accuracy over full temperature range and eliminates crystal load capacitor tuning during PCB design.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICS85310AGI-01LFT	8-output, no integrated oscillator; requires external crystal or clock source; 0.07 ps additive jitter	Lacks multi-voltage output banks - all outputs share same VDDO; limited to 3.3 V or 2.5 V only	Select when board space allows external oscillator and output voltage uniformity is acceptable
Si53302-A01AGM	10-output, no crystal oscillator; relies on external clock or Si5330x family jitter cleaner; higher power (45 mA IDD)	Requires I²C configuration; supports fractional dividers but adds firmware dependency and startup latency	Select when programmable frequency synthesis or spread-spectrum capability is required beyond fixed-ratio fanout

Compared with ICS85310AGI-01LFT and Si53302-A01AGM, the PI6C49X0210ZHIEX uniquely combines integrated crystal oscillation, true multi-voltage output banks, and sub-0.06 ps additive jitter in a pin-defined, registerless architecture - making it optimal for cost-sensitive, high-reliability clock distribution where layout simplicity and deterministic timing are critical.

Availability

PI6C49X0210ZHIEX is available at Aetrix Electronics and suitable for networking switches, optical line cards, backplane computing platforms, and industrial Ethernet controllers requiring stable component supply across extended temperature ranges and multi-voltage I/O architectures.

Supply support for PI6C49X0210ZHIEX 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

Pericom Semiconductor (now part of Diodes Incorporated) specialized in high-speed timing, signal integrity, and interface solutions for communications and computing infrastructure.

The PI6C49X series targets low-jitter, multi-voltage clock distribution in carrier-grade and enterprise networking systems - emphasizing integration, configurability, and robustness over software-defined flexibility.

FAQ

What crystal specifications are required for the PI6C49X0210ZHIEX internal oscillator?

The device requires a fundamental-mode quartz crystal with 10–50 MHz frequency, 18 pF load capacitance, ≤50 Ω ESR, and 1 mW drive level. Recommended part examples include ECS-250-18-36A (25 MHz, 18 pF) or TXC-7M-25.000M-18-10-100 (25 MHz, 18 pF). Crystal layout must follow tight loop area guidelines with symmetric XIN/XOUT traces and no nearby noisy signals.

Can PI6C49X0210ZHIEX drive 50 Ω transmission lines directly?

Yes - all CLK outputs are designed for 50 Ω termination to VDDO/2, achieving 200–900 ps rise/fall times depending on VDDO (1.5 V to 3.3 V). Output impedance is 7–20 Ω (depending on VDDO), enabling clean edge integrity without external series resistors when properly terminated. Layout must use controlled-impedance routing and adjacent ground planes.

How does the IN_SEL[1:0] pin logic select between XTAL and external reference inputs?

IN_SEL0 and IN_SEL1 are pull-down inputs defining MUX selection: '11' or '01' selects XTAL; '10' selects REF1 (IN1/IN1#); '00' selects REF0 (IN0/IN0#). No internal pull-ups exist - external pull-down resistors (10 kΩ) are required if unused. Differential inputs accept LVDS/LVPECL; single-ended mode uses internal VDD/2 bias on complementary pins.

Is PI6C49X0210ZHIEX pin-compatible with earlier Pericom fanout buffers like PI6C20400?

No - PI6C49X0210ZHIEX uses a 32-pin TQFN (ZH) package with distinct pin mapping, including dedicated GNDO pins, dual VDDO groups, and crystal interface pins (XIN/XOUT) absent in PI6C20400. The pinout differs fundamentally due to added oscillator integration and multi-voltage architecture; PCB redesign is required for migration.

PI6C49X0210ZHIEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 32-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Fanout Buffer (Distribution)

Number of Circuits:: 1

Ratio - Input:Output:: 3:10

Differential - Input:Output:: Yes/No

Input:: LVCMOS, LVTTL, Crystal

Output:: CMOS

Frequency - Max:: 200 MHz

Voltage - Supply:: 2.375V ~ 3.465V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 32-TQFN (5x5)

PI6C49X0210ZHIEX FAQ

1.How can I place an order for PI6C49X0210ZHIEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI6C49X0210ZHIEX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for PI6C49X0210ZHIEX reliable?

The price and inventory of PI6C49X0210ZHIEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI6C49X0210ZHIEX is usually 5 days.

3.What payment methods are accepted for PI6C49X0210ZHIEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI6C49X0210ZHIEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI6C49X0210ZHIEX?

PI6C49X0210ZHIEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI6C49X0210ZHIEX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for PI6C49X0210ZHIEX?

For technical support, including PI6C49X0210ZHIEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI6C49X0210ZHIEX requirements.

6.How does Aetrix verify that PI6C49X0210ZHIEX is sourced from the original manufacturer or authorized distributors?

All PI6C49X0210ZHIEX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PI6C49X0210ZHIEX meets industry standards.

7.What is the process for return or replacement of PI6C49X0210ZHIEX?

All PI6C49X0210ZHIEX units undergo pre-shipment inspection (PSI). If there is an issue with PI6C49X0210ZHIEX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The PI6C49X0210ZHIEX part is unused and in its original packaging.

Return procedure for PI6C49X0210ZHIEX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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