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

Renesas 2304NZLPGGI8

Name: 2304NZLPGGI8
Brand: Renesas
SKU: 2304NZLPGGI8
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2304NZLPGGI8

Manufacturer:: Renesas

Category:: Clock Buffers, Drivers

Package:: -

Datasheet:: 2304NZLPGGI8.pdf

Description:: 2304NZL SPREAD SPECTRUM PLL

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Product details

Overview

2304NZLPGGI8 from Renesas Electronics is a high-performance 1:4 LVCMOS clock buffer with low skew (40ps max), low propagation delay (1.1–2.5ns depending on VDD), and glitch-free Output Enable control. It operates from 1.8V to 3.3V, supports up to 200MHz input frequency, and is packaged in an 8-pin TSSOP for industrial applications including PCI/PCI-X and networking infrastructure.

For engineers reviewing the 2304NZLPGGI8 datasheet, 2304NZLPGGI8 pinout, 2304NZLPGGI8 application, or 2304NZLPGGI8 equivalent, key selection criteria include output-to-output skew tolerance, supply voltage flexibility across 1.8V/2.5V/3.3V rails, synchronous OE behavior, thermal performance in TSSOP packaging, and compatibility with LVCMOS timing systems requiring sub-40ps skew.

Technical Context

The 2304NZLPGGI8 implements a fully buffered fanout architecture with four identical LVCMOS outputs driven from a single CLK_IN, using internal logic to ensure synchronized enable/disable transitions. Its glitch-free OE function relies on synchronous sampling of the enable signal relative to CLK_IN edges to prevent metastability-induced clock glitches.

It delivers deterministic timing performance across three supply voltages: propagation delay improves from 2.5ns at 1.8V to 1.7ns at 2.5V and 1.1ns at 3.3V, while additive phase jitter degrades from 30fs (3.3V) to 50fs (2.5V) and 100fs (1.8V), reflecting voltage-dependent noise floor trade-offs.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.71V–3.465V: Supports mixed-voltage system integration with stable operation across 1.8V, 2.5V, and 3.3V logic domains.
Max Output-to-Output Skew	40ps: Enables tight timing alignment across four clock domains in high-speed serial link receivers or multi-lane PHYs.
Propagation Delay	1.1–2.5ns: Low-latency buffering critical for real-time clock distribution in PCIe Gen1–Gen3 reference clocks.
Input Frequency Support	DC to 200MHz: Covers PCI-X (133MHz), Gigabit Ethernet (125MHz), and DDR memory interface clocking.
Additive Phase Jitter (RMS)	30–100fs: Meets stringent jitter budgets for SERDES reference clocks where <100fs RMS is required for BER <10⁻¹².
Operating Temperature	−40°C to +85°C: Validated for industrial-grade deployment in telecom line cards and network switches.
Output Drive Strength	20–25Ω nominal impedance: Matches standard 50Ω PCB trace termination for minimal reflections in point-to-point clock routing.

Pinout & Package

2304NZLPGGI8 is packaged in an 8-pin TSSOP (4.4 mm × 3.0 mm × 1.0 mm body, 0.65 mm pitch), RoHS-compliant and rated for industrial temperature range (−40°C to +85°C).

Pin/Terminal	Circuit Role	Design Meaning
1 - CLK_IN	Clock input	Single-ended LVCMOS input accepting DC–200MHz signals; threshold at VDD/2 for rail-to-rail compatibility.
2 - OE	Output Enable control	Synchronous active-HIGH enable; forces all outputs LOW when deasserted without intermediate glitches.
3 - CLK0	Clock output 0	LVCMOS output with matched rise/fall times (0.5–1.5ns) and 20–25Ω drive impedance.
4 - GND	Power ground	Reference plane for all I/O and internal logic; requires local 0.01µF decoupling adjacent to pin 6.
5 - CLK1	Clock output 1	Electrically identical to CLK0; output skew ≤40ps vs. CLK0 under matched load/trace conditions.
6 - VDD	Power supply	Accepts 1.8V/2.5V/3.3V; must be decoupled to GND (pin 4) with 0.01µF capacitor placed near package.
7 - CLK2	Clock output 2	One of four fanout outputs; requires identical trace geometry/load as other outputs to maintain ≤40ps skew.
8 - CLK3	Clock output 3	Final buffered output; shares same timing characteristics and drive strength as CLK0–CLK2.

Key Features

Feature	Design Value
Glitch-free Output Enable	Synchronous OE sampling eliminates transient clock pulses during enable/disable transitions-critical for hot-plug clock domains.
Low output skew (≤40ps)	Enables simultaneous clocking of multiple high-speed interfaces (e.g., four SFP+ lanes) without inter-lane timing misalignment.
Multi-voltage support (1.8V–3.3V)	Eliminates level-shifting requirements when interfacing with mixed-voltage SoCs or FPGAs operating at different core voltages.
Industrial temperature rating	Validated operation from −40°C to +85°C ensures reliability in uncontrolled environments like outdoor base stations or industrial gateways.
Small-footprint TSSOP package	4.4 mm × 3.0 mm body enables dense clock tree layout on space-constrained networking PCBs without sacrificing thermal performance.

Applications

PCI/PCI-X Clock Distribution	Gigabit Ethernet PHY Timing
Use Scenario: Distributing a 66MHz or 133MHz reference clock to multiple PCI/PCI-X slots in a server backplane. IC Role / Device Role / Timing Role: 1:4 fanout buffer providing synchronized, low-skew copies to each slot's clock receiver. Use Value: Ensures setup/hold timing margins are preserved across all slots by maintaining ≤40ps output skew and <2.5ns propagation delay.	Use Scenario: Driving four independent 125MHz clock inputs for quad-port Gigabit Ethernet PHYs in a switch ASIC. IC Role / Device Role / Timing Role: LVCMOS clock repeater delivering jitter-cleaned, buffered clocks to each PHY's REFCLK pin. Use Value: Additive phase jitter as low as 30fs at 3.3V meets IEEE 802.3 clause 40 jitter compliance for 1000BASE-T.
DDR Memory Interface Clocking	Industrial PLC Real-Time Clock Tree
Use Scenario: Generating matched clock pairs for DDR2/DDR3 memory controllers with dual-channel configurations. IC Role / Device Role / Timing Role: Fanout buffer splitting a master clock into four outputs-one per memory channel DQS/DQ group. Use Value: Sub-40ps skew between outputs minimizes inter-channel timing skew, improving memory timing margin and stability.	Use Scenario: Providing deterministic clock signals to multiple microcontrollers and FPGA-based I/O modules inside an industrial programmable logic controller. IC Role / Device Role / Timing Role: Industrial-grade clock distributor enabling synchronized sampling across distributed sensor nodes. Use Value: −40°C to +85°C operation and robust OE control allow safe clock gating during firmware updates without disrupting real-time task scheduling.

PCI/PCI-X Clock Distribution

Gigabit Ethernet PHY Timing

Use Scenario: Distributing a 66MHz or 133MHz reference clock to multiple PCI/PCI-X slots in a server backplane.

IC Role / Device Role / Timing Role: 1:4 fanout buffer providing synchronized, low-skew copies to each slot's clock receiver.

Use Value: Ensures setup/hold timing margins are preserved across all slots by maintaining ≤40ps output skew and <2.5ns propagation delay.

Use Scenario: Driving four independent 125MHz clock inputs for quad-port Gigabit Ethernet PHYs in a switch ASIC.

IC Role / Device Role / Timing Role: LVCMOS clock repeater delivering jitter-cleaned, buffered clocks to each PHY's REFCLK pin.

Use Value: Additive phase jitter as low as 30fs at 3.3V meets IEEE 802.3 clause 40 jitter compliance for 1000BASE-T.

DDR Memory Interface Clocking

Industrial PLC Real-Time Clock Tree

Use Scenario: Generating matched clock pairs for DDR2/DDR3 memory controllers with dual-channel configurations.

IC Role / Device Role / Timing Role: Fanout buffer splitting a master clock into four outputs-one per memory channel DQS/DQ group.

Use Value: Sub-40ps skew between outputs minimizes inter-channel timing skew, improving memory timing margin and stability.

Use Scenario: Providing deterministic clock signals to multiple microcontrollers and FPGA-based I/O modules inside an industrial programmable logic controller.

IC Role / Device Role / Timing Role: Industrial-grade clock distributor enabling synchronized sampling across distributed sensor nodes.

Use Value: −40°C to +85°C operation and robust OE control allow safe clock gating during firmware updates without disrupting real-time task scheduling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICS8304AMLF	Higher max frequency (250MHz), but higher typical skew (60ps) and no glitch-free OE; requires external pull-up on OE.	Used in telecom line cards where higher bandwidth outweighs skew sensitivity; lacks industrial temp validation.	Select only if >200MHz operation is mandatory and OE glitch immunity is not required.
PI6C20400LEX	Lower jitter (20fs @125MHz), but fixed 3.3V-only supply and larger SOIC-8 footprint; no OE pin.	Preferred in legacy 3.3V-only designs where ultra-low jitter dominates over voltage flexibility or dynamic clock gating.	Choose when jitter is primary constraint and system does not require OE control or multi-voltage support.

Compared with ICS8304AMLF and PI6C20400LEX, the 2304NZLPGGI8 uniquely balances 200MHz bandwidth, 40ps skew, glitch-free OE, and 1.8V–3.3V operation-making it optimal for modern industrial and networking systems needing flexible, reliable clock fanout without design compromises.

Availability

2304NZLPGGI8 is available at Aetrix Electronics and suitable for PCI/PCI-X clock distribution, Gigabit Ethernet PHY timing, and industrial PLC real-time clock tree applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for 2304NZLPGGI8 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

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and infrastructure markets.

The 2304NZLPGGI8 belongs to Renesas' high-performance clock buffer product line, engineered specifically for low-skew, low-jitter fanout in datacom and industrial timing systems demanding robust voltage scalability and glitch-free control.

FAQ

What is the maximum input frequency supported by the 2304NZLPGGI8?

The 2304NZLPGGI8 supports an input frequency range from DC to 200MHz across all valid supply voltages (1.8V, 2.5V, and 3.3V). This specification is confirmed in the AC Electrical Characteristics tables of the official Renesas datasheet dated July 24, 2023, and applies to both TSSOP and DFN package variants of the 2304NZL family. The 2304NZLPGGI8 maintains full functionality-including low skew and jitter performance-up to this limit.

Does the 2304NZLPGGI8 support glitch-free output enable functionality?

Yes, the 2304NZLPGGI8 implements a synchronous, glitch-free Output Enable (OE) function. When OE is asserted HIGH, all four outputs (CLK0–CLK3) transition cleanly on the next CLK_IN edge; when OE is deasserted LOW, outputs are driven LOW synchronously-eliminating intermediate incorrect clock cycles. This behavior is explicitly documented in the device description and functionality table of the Renesas 2304NZL datasheet.

What package type and dimensions does the 2304NZLPGGI8 use?

The 2304NZLPGGI8 uses an 8-pin TSSOP package with a 4.4 mm × 3.0 mm body and 0.65 mm lead pitch. It is RoHS-compliant (denoted by "G" in the part number) and rated for industrial temperature (−40°C to +85°C), as specified in the Renesas ordering information table. The "PGGI8" suffix confirms tape-and-reel packaging in this TSSOP variant.

Can the 2304NZLPGGI8 operate from a 2.5V supply?

Yes, the 2304NZLPGGI8 is fully specified to operate from a 2.5V ±5% supply (2.375V–2.625V), delivering 1.9ns typical propagation delay, 50fs additive phase jitter at 125MHz, and 40ps max output-to-output skew. All DC and AC parameters-including VIH/VIL thresholds, drive strength, and current consumption-are validated across 1.8V, 2.5V, and 3.3V rails per the Renesas datasheet.

Is external termination required for the 2304NZLPGGI8 clock outputs?

Yes, Renesas recommends using a series termination resistor on each 2304NZLPGGI8 clock output when the PCB trace exceeds 1 inch in length. Recommended Rs values are 29Ω at 2.5V and 30Ω at 3.3V (per test load table); for 1.8V, use 25Ω. This matches the device's nominal 20–25Ω output impedance and minimizes reflections-critical to preserving the ≤40ps output skew specification.

2304NZLPGGI8 Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

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Packaging:: Bulk

Product Status:: Active

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2304NZLPGGI8 FAQ

1.How can I place an order for 2304NZLPGGI8 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2304NZLPGGI8 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 2304NZLPGGI8 reliable?

The price and inventory of 2304NZLPGGI8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2304NZLPGGI8 is usually 5 days.

3.What payment methods are accepted for 2304NZLPGGI8?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2304NZLPGGI8 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2304NZLPGGI8?

2304NZLPGGI8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2304NZLPGGI8 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 2304NZLPGGI8?

For technical support, including 2304NZLPGGI8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2304NZLPGGI8 requirements.

6.How does Aetrix verify that 2304NZLPGGI8 is sourced from the original manufacturer or authorized distributors?

All 2304NZLPGGI8 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 2304NZLPGGI8 meets industry standards.

7.What is the process for return or replacement of 2304NZLPGGI8?

All 2304NZLPGGI8 units undergo pre-shipment inspection (PSI). If there is an issue with 2304NZLPGGI8, 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 2304NZLPGGI8 part is unused and in its original packaging.

Return procedure for 2304NZLPGGI8:

1.Submit a request within 90 days.

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

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