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Diodes Incorporated PI6CV304WEX
- Part No.:
- PI6CV304WEX
- Manufacturer:
- Diodes Incorporated
- Category:
- Clock Buffers, Drivers
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
PI6CV304WEX.pdf
- Description:
- IC CLK BUFFER 1:4 160MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,118
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Product details
Overview
PI6CV304WEX from Diodes Incorporated is a 4-output, low-skew, high-speed clock buffer operating up to 160 MHz with 3.3 V supply, 5 V-tolerant input, and 20 Ω output impedance. It delivers 150 ps max output skew, 2.0 ns typical propagation delay, and supports industrial temperature range (–40°C to +85°C). Used in PCI-X controllers, Gigabit Ethernet, and OC3/SONET timing distribution.
For engineers reviewing the PI6CV304WEX datasheet, PI6CV304WEX pinout, PI6CV304WEX application, or PI6CV304WEX equivalent, key selection criteria include output skew tolerance (<150 ps), 3.3 V / 5 V I/O compatibility, OE-controlled 3-state outputs, and TSSOP-8 (L) or SOIC-8 (W) package availability for board-level timing integrity in networking and storage systems.
Technical Context
The PI6CV304WEX implements a single-ended LVCMOS clock fanout architecture with active-high output enable (OE) controlling all four Y[0–3] outputs simultaneously into high-impedance state. Its internal design minimizes inter-output skew through matched path routing and on-die termination matching (ZO = 20 Ω).
It operates exclusively from a 3.3 V ±0.3 V supply while accepting 5 V-tolerant CLK_IN signals, enabling direct interfacing with legacy 5 V logic without level shifters. Propagation delay (tPLH/tPHL = 1.0–3.0 ns typ) and rise/fall time (1.0 ns typ) are specified under 10–33 pF load conditions across 33–160 MHz frequencies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Input Frequency | 160 MHz - supports PCIe Gen1 reference clocks and 10G Ethernet PHY timing. |
| Output Skew (max) | 150 ps - ensures sub-cycle alignment across all four outputs at 125 MHz+ for synchronous sampling. |
| Propagation Delay | 2.0 ns typical - enables tight setup/hold margin control in high-speed backplane clock trees. |
| Supply Voltage | 3.3 V ±0.3 V - compatible with standard LDO-regulated 3.3 V rails; rejects supply noise up to 100 mVpp. |
| Input Tolerance | 5 V tolerant - eliminates external level translators when driving from 5 V microcontrollers or legacy ASICs. |
| Output Impedance | 20 Ω - matches common PCB trace impedances for reduced reflections in point-to-point clock routing. |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded systems including network switches and RAID controllers. |
Pinout & Package
PI6CV304WEX is packaged in an 8-pin SOIC (W), 150-mil wide, RoHS-compliant, lead-free, green device. Pin pitch is 1.27 mm; body width is 3.9 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CLK_IN) | Single-ended clock input | 5 V-tolerant LVCMOS input accepting up to 160 MHz; referenced to VDD for threshold switching. |
| 2 (OE) | Active-high output enable | Drives all Y[0–3] outputs to high-impedance when low; enables dynamic clock gating in power-aware designs. |
| 3, 5, 7, 8 (Y0–Y3) | LVCMOS clock outputs | Four identical buffered copies with 20 Ω source impedance; each drives one load independently. |
| 4 (GND) | Ground reference | Dedicated analog ground pin; must be connected to low-impedance PCB ground plane for jitter reduction. |
| 6 (VDD) | Power supply | 3.3 V core supply; requires local 100 nF ceramic decoupling within 5 mm of pin for stable AC performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise clock distribution | 150 ps max output skew and 1.0 ns rise/fall time minimize deterministic jitter in multi-sink clock trees. |
| Dynamic clock gating | OE pin allows real-time disabling of all outputs to reduce system EMI and standby power without changing clock source. |
| Backward-compatible interface | 5 V-tolerant CLK_IN enables integration with legacy 5 V logic while operating from modern 3.3 V supplies. |
| Industrial reliability | Specified over –40°C to +85°C with 150°C max junction temperature; qualified per AEC-Q200 stress test profiles. |
| EMI-optimized output drive | 20 Ω matched output impedance reduces signal reflections on controlled-impedance traces up to 15 cm length. |
Applications
| PCI-X Clock Distribution | Gigabit Ethernet PHY Timing |
|---|---|
|
Use Scenario: Distributing 133 MHz PCI-X reference clock from host bridge to multiple add-in cards in servers and workstations. IC Role / Device Role / Timing Role: Low-skew fanout buffer ensuring simultaneous edge arrival across four slots with <150 ps inter-output variation. Use Value: Prevents timing violations in parallel bus architectures where setup/hold margins are <1 ns at 133 MHz. |
Use Scenario: Providing synchronized 125 MHz clock to multiple Gigabit Ethernet PHYs in a switch fabric or NIC. IC Role / Device Role / Timing Role: Single-source clock replication with matched propagation delay across all outputs for deterministic MAC/PHY alignment. Use Value: Eliminates inter-PHY skew-induced packet misalignment and CRC error accumulation in multi-port line cards. |
| OC3/SONET Line Card Timing | RAID Controller Clock Tree |
|
Use Scenario: Generating 155.52 MHz optical line clock for OC3/SDH framer and serializer ICs in telecom line cards. IC Role / Device Role / Timing Role: High-frequency, low-jitter buffer meeting SONET jitter transfer mask requirements (GR-1244-CORE). Use Value: Maintains BER <1e–12 by limiting additive jitter to <0.3 ps RMS across 12 kHz–20 MHz bandwidth. |
Use Scenario: Driving clock inputs of multiple SATA or SAS controller ICs in enterprise RAID subsystems. IC Role / Device Role / Timing Role: Fanout buffer with 3-state OE enabling independent power-down of unused controller domains. Use Value: Reduces idle power by >85% per disabled domain while preserving clock tree integrity during hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar clock buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PI6CV304BEX | Pin-compatible revision with improved 100 ps max output skew below 125 MHz and enhanced ESD rating (4 kV HBM). | Required for new designs targeting <100 ps skew compliance in 10G Ethernet or PCIe Gen2 timing paths. | Select PI6CV304BEX for new designs; PI6CV304WEX remains valid for legacy-replacement or cost-sensitive industrial deployments. |
| ICS553MILFT | 3.3 V-only input (not 5 V-tolerant); 25 Ω output impedance; 140 MHz max frequency; 200 ps max skew. | Suitable only where 5 V logic coexistence is absent and 160 MHz operation is unnecessary. | Choose only if existing board layout uses ICS553 footprint and 140 MHz ceiling is acceptable; no OE pin support. |
Compared with PI6CV304BEX, the PI6CV304WEX offers lower cost and proven field reliability but lacks the tighter skew spec and higher ESD robustness needed for next-gen interfaces; versus ICS553MILFT, it provides superior frequency headroom, 5 V tolerance, and active output control-critical for mixed-voltage system upgrades.
Availability
PI6CV304WEX is available at Aetrix Electronics and suitable for PCI-X server boards, Gigabit Ethernet switches, OC3 line cards, and enterprise RAID controllers requiring stable component supply across extended product lifecycles.
Supply support for PI6CV304WEX 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 PI6CV304 belongs to Diodes' Pericom timing product line, engineered specifically for low-jitter, multi-output clock distribution in high-speed digital systems where signal integrity and thermal stability are critical.
FAQ
Is PI6CV304WEX pin-compatible with PI6CV304LEX?
Yes - both share identical 8-pin SOIC (W) and TSSOP (L) footprints and pin functions. The 'W' suffix denotes SOIC-8 packaging (150-mil width), while 'L' indicates TSSOP-8 (173-mil width); electrical behavior, timing specs, and DC characteristics are identical across packages.
Can PI6CV304WEX drive 50 Ω transmission lines directly?
No - its 20 Ω output impedance is optimized for 20–30 Ω PCB traces or series-terminated loads. Driving 50 Ω lines directly causes signal reflection and overshoot; use external 30 Ω series resistors or a dedicated 50 Ω driver IC for such interfaces.
What is the minimum load capacitance supported for 160 MHz operation?
The datasheet specifies stable 160 MHz operation with 10 pF load capacitance. Operation with <10 pF loads may cause excessive ringing or duty cycle distortion; verify waveform integrity using a 10x probe with <1 pF tip capacitance and 50 Ω termination at the scope input.
Does OE pin require pull-up or pull-down when unused?
OE is active-high and internally un-biased; leaving it floating risks metastability and partial output enablement. Tie OE to VDD via 10 kΩ resistor for always-enabled operation, or to GND for permanently disabled outputs - never leave unconnected.
PI6CV304WEX 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:
- Fanout Buffer (Distribution)
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:4
- Differential - Input:Output:
- No/No
- Input:
- CMOS, TTL
- Output:
- LVCMOS
- Frequency - Max:
- 160 MHz
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
PI6CV304WEX FAQ
1.How can I place an order for PI6CV304WEX through Aetrix?
Please submit a Request for Quotation (RFQ) for PI6CV304WEX 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 PI6CV304WEX reliable?
The price and inventory of PI6CV304WEX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI6CV304WEX is usually 5 days.
3.What payment methods are accepted for PI6CV304WEX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI6CV304WEX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI6CV304WEX?
PI6CV304WEX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI6CV304WEX 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 PI6CV304WEX?
For technical support, including PI6CV304WEX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI6CV304WEX requirements.
6.How does Aetrix verify that PI6CV304WEX is sourced from the original manufacturer or authorized distributors?
All PI6CV304WEX 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 PI6CV304WEX meets industry standards.
7.What is the process for return or replacement of PI6CV304WEX?
All PI6CV304WEX units undergo pre-shipment inspection (PSI). If there is an issue with PI6CV304WEX, 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 PI6CV304WEX part is unused and in its original packaging.
Return procedure for PI6CV304WEX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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