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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Application Specific Clock/Timing

Diodes Incorporated PI6LC48L0201AZHIEX

Name: PI6LC48L0201AZHIEX
Brand: Diodes Incorporated
SKU: PI6LC48L0201AZHIEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI6LC48L0201AZHIEX

Manufacturer:: Diodes Incorporated

Category:: Application Specific Clock/Timing

Package:: 20-WFQFN Exposed Pad

Datasheet:: PI6LC48L0201AZHIEX.pdf

Description:: 2-OUTPUT LVDS NETWORKING CLOCK G

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PI6LC48L0201AZHIEX from Pericom is a 2-output LVDS clock synthesizer optimized for Ethernet reference clock generation, featuring ultra-low phase jitter (0.3ps RMS typ. at 156.25MHz), selectable 62.5/125/156.25MHz outputs via N_SEL pins, and dual supply support (2.5V or 3.3V) for industrial networking systems.

For engineers reviewing the PI6LC48L0201AZHIEX datasheet, PI6LC48L0201AZHIEX pinout, PI6LC48L0201AZHIEX application, or PI6LC48L0201AZHIEX equivalent, key selection criteria include LVDS output skew (≤50ps), crystal vs. single-ended reference input flexibility, RMS phase jitter performance across 12kHz–20MHz integration bandwidth, and industrial temperature operation (–40°C to +85°C).

Technical Context

The PI6LC48L0201AZHIEX integrates a proprietary low-phase-noise PLL with programmable frequency division (N_SEL[1:0]) to generate precise Ethernet clock frequencies from a 25MHz fundamental-mode crystal. Its architecture separates analog (VDDA), core (VDD), and output (VDDO) power domains to suppress supply-induced jitter.

It supports dual clock source selection (XTAL_IN/XTAL_OUT or Ref_IN via IN_SEL), includes master reset (M_reset) and PLL bypass (PLL_ByPass) control, and delivers two matched LVDS output pairs (CLK0/CLK0#, CLK1/CLK1#) with 48–52% duty cycle and ≤400ps rise/fall time.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency	62.5 MHz / 125 MHz / 156.25 MHz - directly supports IEEE 802.3 Ethernet PHY reference clocks
RMS Phase Jitter (156.25MHz)	0.3 ps (typ.), 0.5 ps (max.) over 12 kHz–20 MHz - meets stringent Ethernet timing margin requirements
Supply Voltage	2.5 V or 3.3 V - enables interoperability with mixed-voltage system designs
Output Interface	Dual LVDS differential pairs - provides noise-immune, high-speed clock distribution with 100Ω termination
Operating Temperature	–40°C to +85°C - qualified for industrial-grade embedded networking equipment
Output Skew	≤50 ps - ensures tight timing alignment between CLK0 and CLK1 for multi-port synchronization
Crystal Support	25 MHz fundamental-mode, 18 pF load, ≤50 Ω ESR - validated with FL2500047/FY2500091 crystals

Pinout & Package

Package: 20-pin TQFN (ZH), 3.0 mm × 3.0 mm, 0.4 mm pitch, exposed thermal pad (EPAD) connected to GND.

Pin/Terminal	Circuit Role	Design Meaning
1, 19 VDDO	Output Power Supply	Isolates LVDS output driver noise from PLL core; requires dedicated 0.1 µF bypass
2, 3 CLK0, CLK0#	LVDS Output Pair	Differential 100Ω-terminated clock output; matched routing required for skew control
4 M_reset	Master Reset Input	Pull-down active-high reset; forces outputs to defined LVDS logic states during initialization
5, 7, 20 GND	Ground Reference	System return path; EPAD must be soldered to PCB ground plane for thermal and EMI performance
6 PLL_ByPass	PLL Enable Control	Pull-down input; "1" disables PLL, passes Ref_IN directly to outputs (bypass mode)
8 VDDA	Analog Power Supply	Supplies PLL/VCO; requires RC filter (10Ω + 10µF) to suppress analog supply noise
9, 11 N_SEL0, N_SEL1	Frequency Select Inputs	Pull-down binary inputs selecting output frequency per documented table (00=156.25MHz, etc.)
10 VDD	Core Power Supply	Feeds digital logic and PFD; separate 0.1 µF bypass mandatory
12, 13 XTAL_IN, XTAL_OUT	Crystal Oscillator Interface	Drives parallel-resonant 25MHz crystal; internal load caps optimized for 18pF CL
14 Ref_IN	Single-Ended Clock Input	Accepts LVCMOS/LVTTL reference; AC-coupled when used as alternative to crystal
15 IN_SEL	Input Source Select	"0" = crystal mode, "1" = Ref_IN mode - determines clock source path into PLL
16 NC	No Connection	Not internally bonded; must remain unconnected on PCB
17, 18 CLK1#, CLK1	LVDS Output Pair	Second independent differential clock output; identical electrical specs to CLK0 pair

Key Features

Feature	Design Value
Ultra-low phase jitter	0.3ps RMS (156.25MHz, 12kHz–20MHz) - enables reliable 10GBASE-T and SGMII link timing margins
Triple-frequency LVDS synthesis	Hardware-selectable 62.5/125/156.25MHz outputs - eliminates need for external configuration EEPROM or I²C interface
Multi-supply domain isolation	Separate VDD, VDDA, VDDO rails - reduces cross-talk between PLL, logic, and output drivers to preserve jitter performance
Flexible clock source selection	Crystal oscillator or LVCMOS/LVTTL reference input - supports both precision crystal-based and system-synchronized clocking architectures
Industrial temperature qualification	–40°C to +85°C operation - suitable for uncontrolled-environment switches, routers, and base station equipment

Applications

Ethernet Switch PHY Clocking

10GBASE-T Base-T Transceiver Timing

Use Scenario: Providing synchronized reference clocks to multiple Ethernet PHY ICs in a managed Layer 2 switch chassis.

IC Role / Device Role / Timing Role: Primary LVDS clock generator delivering matched 156.25MHz and 125MHz outputs to PHY devices with sub-50ps inter-output skew.

Use Value: Eliminates need for discrete clock buffers while maintaining IEEE 802.3 jitter compliance across all ports.

Use Scenario: Generating low-jitter 156.25MHz reference for 10GBASE-T physical layer transceivers in enterprise access points.

IC Role / Device Role / Timing Role: High-stability clock source meeting IEEE 802.3an phase jitter limits (<0.5ps RMS) for full-duplex baseband signaling.

Use Value: Enables deterministic symbol timing without requiring external jitter cleaners or reclockers.

SGMII-to-PCIe Bridge Timing

Industrial Network Interface Card (NIC)

Use Scenario: Supplying 125MHz SGMII clock and 62.5MHz auxiliary timing to FPGA-based SGMII-to-PCIe protocol bridges.

IC Role / Device Role / Timing Role: Dual-frequency LVDS generator supporting both serial gigabit media-independent interface and PCIe root complex timing domains.

Use Value: Reduces BOM count by consolidating two critical clock domains into one footprint-efficient IC.

Use Scenario: Delivering robust 125MHz Ethernet reference in DIN-rail mounted industrial NICs operating in harsh factory environments.

IC Role / Device Role / Timing Role: Industrial-grade clock synthesizer with extended temperature range and crystal input resilience against mechanical vibration.

Use Value: Ensures long-term timing stability without drift-induced packet loss in real-time industrial Ethernet (PROFINET, EtherCAT).

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS clock synthesizer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Si5332A-D-GM	Programmable via I²C; wider frequency range (100kHz–350MHz); higher integration (jitter cleaner + synthesizer)	Requires firmware configuration; suited for dynamic reconfiguration scenarios	Select when design needs field-upgradable clock profiles or multi-protocol support beyond Ethernet
ICS8430I-01T	Fixed 125MHz/156.25MHz outputs; no crystal interface; lower jitter (0.2ps typ.) but no frequency select pins	Lacks hardware-selectable outputs and crystal option - limited to pre-defined clock trees	Select when only one fixed frequency is needed and board space permits larger SOIC package

Compared with Si5332A-D-GM and ICS8430I-01T, the PI6LC48L0201AZHIEX offers hardware-configurable Ethernet frequencies without software overhead, crystal-based autonomy, and minimal footprint - making it optimal for cost-sensitive, high-volume, fixed-function networking hardware.

Availability

PI6LC48L0201AZHIEX is available at Aetrix Electronics and suitable for Ethernet switch PHY clocking, 10GBASE-T transceiver timing, and industrial network interface cards requiring stable component supply and industrial temperature qualification.

Supply support for PI6LC48L0201AZHIEX 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 (acquired by Diodes Incorporated in 2016) specialized in high-performance timing, signal integrity, and interface solutions for networking, computing, and communications infrastructure.

The PI6LC48L0201AZHIEX belongs to Pericom's HiFlex family of clock generators, designed specifically to deliver ultra-low-jitter, application-optimized clock synthesis for Ethernet and high-speed serial interfaces without programmability overhead.

FAQ

What crystal specifications are required for optimal PI6LC48L0201AZHIEX performance?

The device is characterized for 25MHz fundamental-mode parallel-resonant crystals with 18pF load capacitance, ≤50Ω ESR, and ±20ppm frequency tolerance. Recommended parts include FL2500047 (3.2×2.5mm, 18pF, ±20ppm) and FY2500091 (5×3.2mm, 18pF, ±30ppm). Crystal drive level must not exceed 1mW to avoid aging or instability.

Can PI6LC48L0201AZHIEX operate with a single-ended LVCMOS reference instead of a crystal?

Yes - the IN_SEL pin selects between crystal (IN_SEL=0) and LVCMOS/LVTTL reference (IN_SEL=1). Ref_IN accepts 1.8V/2.5V/3.3V logic levels with 10ns max edge rate; AC coupling is recommended. When using Ref_IN, PLL_ByPass can be asserted to route the reference directly to outputs without multiplication.

How should unused LVDS outputs be terminated to minimize EMI?

Unused LVDS output pairs (e.g., CLK1/CLK1# when only CLK0 is needed) must be either terminated with a 100Ω resistor across the differential pair at the device pins, or left floating with no PCB trace attached. Floating outputs with stub traces cause reflections and radiated emissions; termination preserves signal integrity and reduces common-mode noise.

What power supply filtering is mandatory to achieve specified phase jitter performance?

VDD, VDDA, and VDDO each require individual 0.1µF ceramic bypass capacitors placed within 2mm of their pins. VDDA additionally needs a 10Ω series resistor and 10µF bulk capacitor to form an RC filter that attenuates high-frequency noise coupling into the PLL analog section - omission degrades RMS jitter by >0.1ps.

PI6LC48L0201AZHIEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 20-WFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

PLL:: Yes with Bypass

Main Purpose:: Ethernet

Input:: LVCMOS, LVTTL, Crystal

Output:: LVDS

Number of Circuits:: 1

Ratio - Input:Output:: 2:2

Differential - Input:Output:: No/Yes

Frequency - Max:: 170MHz

Voltage - Supply:: 2.375V ~ 2.625V, 3.135V ~ 3.465V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 20-TQFN (4.5x3.5)

PI6LC48L0201AZHIEX FAQ

1.How can I place an order for PI6LC48L0201AZHIEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI6LC48L0201AZHIEX 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 PI6LC48L0201AZHIEX reliable?

The price and inventory of PI6LC48L0201AZHIEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI6LC48L0201AZHIEX is usually 5 days.

3.What payment methods are accepted for PI6LC48L0201AZHIEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI6LC48L0201AZHIEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI6LC48L0201AZHIEX?

PI6LC48L0201AZHIEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI6LC48L0201AZHIEX 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 PI6LC48L0201AZHIEX?

For technical support, including PI6LC48L0201AZHIEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI6LC48L0201AZHIEX requirements.

6.How does Aetrix verify that PI6LC48L0201AZHIEX is sourced from the original manufacturer or authorized distributors?

All PI6LC48L0201AZHIEX 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 PI6LC48L0201AZHIEX meets industry standards.

7.What is the process for return or replacement of PI6LC48L0201AZHIEX?

All PI6LC48L0201AZHIEX units undergo pre-shipment inspection (PSI). If there is an issue with PI6LC48L0201AZHIEX, 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 PI6LC48L0201AZHIEX part is unused and in its original packaging.

Return procedure for PI6LC48L0201AZHIEX:

1.Submit a request within 90 days.

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

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