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

Diodes Incorporated PI6C49CB04AQ3WEX

Name: PI6C49CB04AQ3WEX
Brand: Diodes Incorporated
SKU: PI6C49CB04AQ3WEX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PI6C49CB04AQ3WEX

Manufacturer:: Diodes Incorporated

Category:: Clock Buffers, Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: PI6C49CB04AQ3WEX.pdf

Description:: IC CLK BUFFER 1:4 200MHZ 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

PI6C49CB04AQ3WEX from Diodes Incorporated is an AEC-Q100 qualified automotive clock buffer with single LVCMOS input and four low-skew CMOS outputs, 250 ps max output-to-output skew, 1.5 V to 3.3 V supply operation, and -40 °C to +85 °C Grade 3 temperature range-used for fanning out reference clocks in ADAS domain controllers and infotainment SoC timing trees.

For engineers reviewing the PI6C49CB04AQ3WEX datasheet, PI6C49CB04AQ3WEX pinout, PI6C49CB04AQ3WEX application, or PI6C49CB04AQ3WEX equivalent, this page delivers verified electrical specs, SOIC-8 pin mapping, automotive thermal limits, jitter performance at 156.25 MHz, and real-world termination guidance for high-reliability vehicle electronics design.

Technical Context

This device implements a single-input, four-output fanout buffer using low-power CMOS logic with rail-to-rail input tolerance up to 3.6 V and configurable output enable control. It supports multiple supply voltages (1.5 V, 1.8 V, 2.5 V, 3.3 V) and delivers consistent sub-250 ps skew across all output pairs under matched loading conditions.

The architecture includes internal level-shifting for mixed-voltage system interfacing, additive jitter as low as 0.05 ps RMS (12 kHz–20 MHz) at 3.3 V/156.25 MHz, and propagation delay ranging from 0.8 ns (3.3 V) to 2 ns (1.5 V), enabling precise timing alignment in multi-clock-domain automotive ECUs.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Skew	±250 ps max between any two outputs-ensures synchronous clock distribution to multiple receivers without phase misalignment.
Supply Voltage Range	1.425 V to 3.6 V-supports direct interface with 1.5 V, 1.8 V, 2.5 V, and 3.3 V logic domains without external level shifters.
Additive Jitter	0.05 ps RMS @156.25 MHz (12 kHz–20 MHz)-meets SONET-compliant phase noise requirements for high-speed serial link timing recovery.
Propagation Delay	0.8 ns (typ, 3.3 V) to 2 ns (typ, 1.5 V)-enables predictable clock path budgeting in timing-critical ADAS sensor fusion pipelines.
Input Tolerance	3.6 V tolerant CLK input-allows use with higher-voltage oscillators while powered from lower-core supplies like 1.8 V.
Operating Temperature	-40 °C to +85 °C (Automotive Grade 3)-certified for cabin-located modules including head units and gateway ECUs.
Output Enable Function	Active-low OE pin tri-states all four outputs-enables dynamic clock gating during sleep mode to reduce system standby power.

Pinout & Package

Packaged in an 8-pin SOIC (150 mil width), the PI6C49CB04AQ3WEX uses standard surface-mount footprint compatible with automated assembly and automotive reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1	CLK	Single-ended LVCMOS clock input; 3.6 V tolerant, referenced to VDD, drives internal buffer core.
2	Q1	CMOS clock output 1; rail-to-rail swing, matched skew and drive strength to Q2–Q4.
3	Q2	CMOS clock output 2; identical electrical characteristics and timing to Q1, Q3, Q4.
4	Q3	CMOS clock output 3; supports independent trace routing with <250 ps skew relative to other outputs.
5	Q4	CMOS clock output 4; enables full 1:4 fanout without external buffering or impedance mismatch concerns.
6	GND	Power ground reference; must be connected to low-impedance PCB plane for stable noise margin and jitter performance.
7	VDD	Supply voltage input (1.5 V–3.3 V); requires local 0.1 µF decoupling capacitor per datasheet layout guidelines.
8	OE	Active-low output enable; pulls all Q1–Q4 into high-impedance state when logic low, enabling dynamic clock shutdown.

Key Features

Feature	Design Value
AEC-Q100 Qualified	Qualified to Grade 3 (-40 °C to +85 °C) per automotive reliability stress test standard-validates suitability for non-engine-compartment ECU applications.
Low-Power CMOS Core	IDD = 5–12 mA at 25–100 MHz (3.3 V), scaling linearly with frequency-reduces thermal load in space-constrained infotainment modules.
Input Clock Tolerance	Accepts 3.6 V input while operating from 1.5 V supply-eliminates need for external level translators in mixed-voltage clock trees.
Output Impedance Matching	20 Ω nominal output impedance-simplifies series termination (e.g., 33 Ω resistor) for controlled-impedance PCB traces >1 inch.
Thermal Performance	θJA = 157 °C/W (still air); junction temperature remains <125 °C under typical automotive ambient and load conditions.

Applications

ADAS Domain Controller

Infotainment Head Unit

Use Scenario: Distributing a 156.25 MHz reference clock from a central oscillator to multiple SoC peripherals (GPU, ISP, Ethernet PHY).

IC Role / Device Role / Timing Role: Low-skew fanout buffer ensuring simultaneous clock edge arrival across heterogeneous processing blocks.

Use Value: Maintains <250 ps inter-output skew to prevent setup/hold violations in high-speed parallel interfaces like MIPI CSI-2 and PCIe root complex links.

Use Scenario: Driving separate clock domains for audio DSP, display controller, and USB 3.0 PHY from a single XO source.

IC Role / Device Role / Timing Role: Voltage-flexible clock repeater enabling mixed-supply SoC subsystems to share one precision timing source.

Use Value: 1.5 V–3.3 V supply compatibility eliminates discrete level shifters, reducing BOM count and board area in cost-sensitive head units.

Body Control Module

Telematics Control Unit

Use Scenario: Providing synchronized clocks to LIN transceivers, CAN FD controllers, and microcontroller peripherals in centralized body electronics.

IC Role / Device Role / Timing Role: Output-enable–controlled clock distributor enabling selective subsystem wake-up while maintaining low quiescent current.

Use Value: Active-low OE pin allows software-controlled clock gating-reducing idle power by >90% versus always-on clock distribution.

Use Scenario: Fanning out GPS PPS signal and cellular baseband reference clock to dual-processor architecture with isolated timing domains.

IC Role / Device Role / Timing Role: Jitter-optimized buffer preserving time-of-day accuracy and RF symbol timing integrity across split-processing paths.

Use Value: 0.05 ps additive jitter at 156.25 MHz ensures <1 ps RMS phase error over 12 kHz–20 MHz band-critical for GNSS timing holdover and LTE-TDD synchronization.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NB3N404MNG	4-output, 3.3 V only, 350 ps skew, no OE pin, QFN-16 package	Lacks output enable and automotive temperature grade; suited for industrial non-AEC designs	Select if board space permits QFN and system does not require dynamic clock gating or extended temp operation.
Microchip SY100EL15ZC	ECL-based, 5 V supply, differential PECL outputs, 100 ps skew, -40 °C to +85 °C	Requires level translation to CMOS, higher power, incompatible with LVCMOS systems	Choose only for legacy ECL timing infrastructure where ultra-low skew outweighs power and interface complexity.

Compared with NB3N404MNG and SY100EL15ZC, the PI6C49CB04AQ3WEX uniquely combines AEC-Q100 Grade 3 qualification, active-low OE control, 1.5–3.3 V supply flexibility, and 250 ps skew in SOIC-8-making it the only drop-in solution for new automotive infotainment and ADAS clock trees requiring functional safety-aware timing distribution.

Availability

PI6C49CB04AQ3WEX is available at Aetrix Electronics and suitable for ADAS domain controllers, infotainment head units, and telematics control units requiring stable component supply across automotive production lifecycles.

Supply support for PI6C49CB04AQ3WEX 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 automotive, industrial, and consumer markets-with emphasis on high-reliability, AEC-Q100–qualified timing and power solutions.

The PI6C49CB04AQ3WEX belongs to Diodes' Pericom® clock buffer product line, engineered specifically for automotive clock distribution where low skew, jitter control, and temperature resilience are mandatory for functional safety compliance.

FAQ

What is the maximum supported output frequency at 1.8 V supply?

At 1.8 V ±5% and -40 °C to +85 °C, the PI6C49CB04AQ3WEX supports up to 166 MHz output frequency per AC Electrical Characteristics table (Page 9). This is validated with 5 pF load and rail-to-rail input; actual usable frequency depends on PCB trace length and termination.

Can the OE pin be left unconnected, or does it require a pull-up?

The OE pin must not be left floating. Per datasheet Page 2, it should be tied to VDD for normal operation. If unused, a 4.7 kΩ pull-up to VDD is recommended to ensure reliable high-state activation and prevent unintended output tri-state behavior during power-up.

Is external decoupling required, and what value is specified?

Yes-each VDD pin requires a minimum 0.1 µF ceramic decoupling capacitor placed as close as possible to pin 7, per datasheet Page 12. For improved high-frequency noise suppression, a 1 µF capacitor may be added in parallel; both must connect directly to the GND plane via short, low-inductance traces.

Does the device support hot insertion or live swapping in powered systems?

No-hot insertion is not supported. The absolute maximum rating for OE and outputs is -0.5 V to VDD+0.5 V (Page 3), and the device lacks Ioff protection or power sequencing immunity. Power must be stable before applying input clock or enabling outputs to avoid latch-up or parametric degradation.

PI6C49CB04AQ3WEX Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Clock Buffer

Number of Circuits:: 1

Ratio - Input:Output:: 1:4

Differential - Input:Output:: No/No

Input:: LVCMOS

Output:: CMOS, LVCMOS

Frequency - Max:: 200 MHz

Voltage - Supply:: 1.425V ~ 1.575V, 1.7V ~ 1.89V, 2.375V ~ 2.625V, 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Mounting Type:: Surface Mount

Grade:: Automotive

Qualification:: AEC-Q100

Supplier Device Package:: 8-SOIC

PI6C49CB04AQ3WEX FAQ

1.How can I place an order for PI6C49CB04AQ3WEX through Aetrix?

Please submit a Request for Quotation (RFQ) for PI6C49CB04AQ3WEX 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 PI6C49CB04AQ3WEX reliable?

The price and inventory of PI6C49CB04AQ3WEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI6C49CB04AQ3WEX is usually 5 days.

3.What payment methods are accepted for PI6C49CB04AQ3WEX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI6C49CB04AQ3WEX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PI6C49CB04AQ3WEX?

PI6C49CB04AQ3WEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PI6C49CB04AQ3WEX 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 PI6C49CB04AQ3WEX?

For technical support, including PI6C49CB04AQ3WEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI6C49CB04AQ3WEX requirements.

6.How does Aetrix verify that PI6C49CB04AQ3WEX is sourced from the original manufacturer or authorized distributors?

All PI6C49CB04AQ3WEX 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 PI6C49CB04AQ3WEX meets industry standards.

7.What is the process for return or replacement of PI6C49CB04AQ3WEX?

All PI6C49CB04AQ3WEX units undergo pre-shipment inspection (PSI). If there is an issue with PI6C49CB04AQ3WEX, 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 PI6C49CB04AQ3WEX part is unused and in its original packaging.

Return procedure for PI6C49CB04AQ3WEX:

1.Submit a request within 90 days.

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

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