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

Renesas 2304NZLPGGI

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

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Part No.:: 2304NZLPGGI

Manufacturer:: Renesas

Category:: Clock Buffers, Drivers

Package:: 16-TSSOP (0.173", 4.40mm Width)

Datasheet:: 2304NZLPGGI.pdf

Description:: IC CLK BUFFER 1:4 140MHZ 16TSSOP

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Product details

Overview

2304NZLPGGI from Renesas Electronics is a high-performance 1:4 LVCMOS clock buffer with low skew (≤40 ps), low propagation delay (1.1–2.5 ns depending on VDD), and glitch-free Output Enable control. It operates across 1.8V–3.3V supply, supports up to 200 MHz input frequency, and targets PCI/PCI-X and networking timing distribution.

For engineers reviewing the 2304NZLPGGI datasheet, 2304NZLPGGI pinout, 2304NZLPGGI application, or 2304NZLPGGI equivalent, key selection criteria include output-to-output skew tolerance, supply voltage flexibility, industrial temperature range (−40°C to +85°C), and compatibility with TSSOP-8 layout constraints.

Technical Context

The 2304NZLPGGI implements a synchronous fanout architecture with internal logic that ensures glitch-free output enable/disable transitions-no intermediate clock pulses occur during OE state changes. All four outputs share identical internal drive strength and path delay calibration.

It requires matched trace lengths, identical termination (e.g., 50 Ω series resistor per output), and equal capacitive loading (≤5 pF) to achieve specified 15–40 ps output-to-output skew. Input threshold is rail-referenced (VIH = 0.8×VDD, VIL = 0.2×VDD), supporting clean LVCMOS interfacing across all supported supply voltages.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.71–3.465 V: Supports 1.8 V, 2.5 V, and 3.3 V systems without level shifters.
Input Frequency Range	DC to 200 MHz: Valid for PCIe Gen1/Gen2 reference clocks and Ethernet PHY timing.
Output-to-Output Skew	15–40 ps max: Enables tight timing alignment across four synchronous clock domains.
Propagation Delay	1.1–3.2 ns (VDD-dependent): Predictable latency for deterministic clock tree design.
Additive Phase Jitter (125 MHz)	30–100 fs RMS: Meets jitter budget requirements for high-speed serial link receivers.
Operating Temperature	−40°C to +85°C: Qualified for industrial-grade embedded and networking equipment.
Input Capacitance	5 pF: Low loading enables direct connection to crystal oscillators or PLL outputs.

Pinout & Package

2304NZLPGGI is packaged in an 8-pin TSSOP (4.4 mm × 3.0 mm × 1.0 mm body, 0.65 mm pitch), RoHS-compliant, industrial temperature grade.

Pin/Terminal	Circuit Role	Design Meaning
1 - CLK_IN	Clock input	Single-ended LVCMOS input accepting DC–200 MHz; threshold referenced to VDD.
2 - OE	Output Enable control	Active-HIGH logic; forces all outputs LOW when LOW, enabling synchronized clock gating.
3 - CLK0	Clock output 0	LVCMOS output with 25 Ω nominal impedance at 3.3 V; requires external series termination for >1 inch traces.
4 - GND	Power ground	Primary return path for VDD current; must be connected to solid ground plane adjacent to decoupling capacitor.
5 - CLK1	Clock output 1	Identical electrical characteristics to CLK0; matched routing required to maintain ≤40 ps skew.
6 - VDD	Power supply	Accepts 1.8 V/2.5 V/3.3 V; requires 0.01 µF ceramic decoupling capacitor placed within 2 mm of pin.
7 - CLK2	Clock output 2	One of four fanout outputs; shares same internal delay path as CLK0–CLK3 for minimal inter-output variation.
8 - CLK3	Clock output 3	Final buffered output; no internal inversion-output phase matches CLK_IN when OE is HIGH.

Key Features

Feature	Design Value
Glitch-free Output Enable	Synchronous assertion/deassertion prevents spurious clock edges during power management or mode switching.
Low output skew (≤40 ps)	Enables simultaneous sampling across multiple ASIC/FPGA clock domains without added deskew logic.
Multi-voltage operation (1.8–3.3 V)	Eliminates need for separate voltage rails when interfacing mixed-supply SoCs and peripherals.
Industrial temperature range	Validated performance from −40°C to +85°C ensures reliability in uncontrolled ambient environments.
Small 8-TSSOP footprint	4.4 mm × 3.0 mm package reduces PCB area vs. SOIC while maintaining hand-solderability and test probe access.

Applications

PCI/PCI-X Timing Distribution	Network Switch Clock Fanout
Use Scenario: Distributing a single 66 MHz or 133 MHz reference clock to multiple PCI/PCI-X slots on a backplane or motherboard. IC Role / Device Role / Timing Role: 1:4 LVCMOS fanout buffer providing matched-delay, low-skew copies to each slot's clock receiver. Use Value: Ensures setup/hold compliance across all slots by limiting output-to-output skew to ≤40 ps and maintaining 45–55% duty cycle.	Use Scenario: Driving clock inputs of four Ethernet PHYs or packet processor interfaces in a 1U switch chassis. IC Role / Device Role / Timing Role: Synchronized clock replication block with glitch-free OE for dynamic port disable/enable during link training. Use Value: Eliminates clock glitches during hot-plug events and meets IEEE 802.3 jitter limits via ≤100 fs additive phase noise at 125 MHz.
Embedded Controller Reference Clock	FPGA I/O Bank Clocking
Use Scenario: Providing clean, low-jitter clock signals to multiple microcontroller peripherals (USB, Ethernet MAC, SPI) from one oscillator source. IC Role / Device Role / Timing Role: Low-propagation-delay (1.1 ns @ 3.3 V) buffer isolating oscillator load while preserving edge integrity. Use Value: Reduces system-level jitter accumulation and supports 1.8 V/2.5 V/3.3 V I/O banks without external level translation.	Use Scenario: Delivering aligned clocks to four independent FPGA I/O banks handling different protocols (e.g., DDR3, PCIe, GMII). IC Role / Device Role / Timing Role: Precision fanout device ensuring sub-50 ps skew between banks for time-critical parallel interface timing. Use Value: Enables deterministic timing closure across banks without manual PCB trace tuning or external delay compensation.

PCI/PCI-X Timing Distribution

Network Switch Clock Fanout

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

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

Use Value: Ensures setup/hold compliance across all slots by limiting output-to-output skew to ≤40 ps and maintaining 45–55% duty cycle.

Use Scenario: Driving clock inputs of four Ethernet PHYs or packet processor interfaces in a 1U switch chassis.

IC Role / Device Role / Timing Role: Synchronized clock replication block with glitch-free OE for dynamic port disable/enable during link training.

Use Value: Eliminates clock glitches during hot-plug events and meets IEEE 802.3 jitter limits via ≤100 fs additive phase noise at 125 MHz.

Embedded Controller Reference Clock

FPGA I/O Bank Clocking

Use Scenario: Providing clean, low-jitter clock signals to multiple microcontroller peripherals (USB, Ethernet MAC, SPI) from one oscillator source.

IC Role / Device Role / Timing Role: Low-propagation-delay (1.1 ns @ 3.3 V) buffer isolating oscillator load while preserving edge integrity.

Use Value: Reduces system-level jitter accumulation and supports 1.8 V/2.5 V/3.3 V I/O banks without external level translation.

Use Scenario: Delivering aligned clocks to four independent FPGA I/O banks handling different protocols (e.g., DDR3, PCIe, GMII).

IC Role / Device Role / Timing Role: Precision fanout device ensuring sub-50 ps skew between banks for time-critical parallel interface timing.

Use Value: Enables deterministic timing closure across banks without manual PCB trace tuning or external delay compensation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ICS85301AMLF	Fixed 3.3 V supply only; higher typical IDD (15 mA); 50 ps max output skew.	Lacks multi-voltage support and glitch-free OE; suitable only for 3.3 V-only designs.	Select if legacy 3.3 V infrastructure exists and skew tolerance >40 ps is acceptable.
PI6C20400LEX	Supports 1.8 V–3.3 V; includes spread-spectrum input capability; 35 ps max skew.	Offers optional spread-spectrum clocking for EMI reduction but adds complexity in non-EMI-sensitive applications.	Prefer when EMI compliance is critical and board space allows extra configuration pins.

Compared with ICS85301AMLF and PI6C20400LEX, the 2304NZLPGGI delivers superior skew performance (≤40 ps), guaranteed glitch-free OE across all supply voltages, and lower propagation delay-making it optimal for timing-critical, multi-rail industrial and networking systems where deterministic clock behavior is mandatory.

Availability

2304NZLPGGI is available at Aetrix Electronics and suitable for PCI/PCI-X timing distribution, network switch clock fanout, and embedded controller reference clocking requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for 2304NZLPGGI 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 delivering microcontrollers, analog, power, and timing solutions for automotive, industrial, and enterprise applications.

The 2304NZLPGGI belongs to Renesas' high-performance clock buffer product line, engineered specifically for low-skew, multi-voltage clock distribution in industrial and communications infrastructure where signal integrity and thermal robustness are critical.

FAQ

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

The 2304NZLPGGI supports an input frequency range from DC to 200 MHz under recommended operating conditions (VDD = 2.5 V or 3.3 V). At 1.8 V supply, the maximum rated input frequency is 170 MHz. These values are specified in the AC Electrical Characteristics section of the official Renesas datasheet dated July 24, 2023, and reflect tested performance across the full industrial temperature range.

Does the 2304NZLPGGI require external termination resistors on its clock outputs?

Yes, the 2304NZLPGGI requires external series termination resistors on each CLK0–CLK3 output when trace length exceeds 1 inch. Renesas recommends 25 Ω (at 1.8 V), 29 Ω (at 2.5 V), or 30 Ω (at 3.3 V) resistors placed as close as possible to the driver pin. This ensures impedance matching to 50 Ω transmission lines and preserves the specified ≤40 ps output-to-output skew.

What is the function of the OE pin on the 2304NZLPGGI, and how does it behave?

The OE (Output Enable) pin on the 2304NZLPGGI is an active-HIGH control input. When OE is HIGH, all four clock outputs (CLK0–CLK3) replicate the CLK_IN signal with low skew and propagation delay. When OE is LOW, all outputs are driven to logic LOW-without glitches or intermediate states-due to synchronous internal gating logic. This behavior is explicitly confirmed in the Pin Descriptions and Functionality Table of the 2304NZLPGGI datasheet.

Is the 2304NZLPGGI pin-compatible with other variants in the 2304NZL family?

Yes, the 2304NZLPGGI (8-TSSOP) shares identical pinout and functionality with the 2304NZLDCGI (8-SOIC) and 2304NZLNTGI (8-DFN) variants. All three packages use the same 8-pin assignment: CLK_IN, OE, CLK0, GND, CLK1, VDD, CLK2, CLK3. This allows direct PCB footprint interchangeability when migrating between packages for thermal, size, or assembly requirements-provided layout rules for each package type are followed.

What decoupling capacitor value is required for the 2304NZLPGGI VDD pin?

A 0.01 µF ceramic decoupling capacitor must be placed between VDD (pin 6) and GND (pin 4) of the 2304NZLPGGI, located as close as possible to the device-ideally within 2 mm. This value is specified in the "External Components" section of the Renesas datasheet and is essential to suppress supply noise and maintain low jitter performance across all operating voltages and frequencies.

2304NZLPGGI Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: -

Package/Case:: 16-TSSOP (0.173", 4.40mm Width)

Packaging:: Tube

Product Status:: Active

Type:: Fanout Buffer (Distribution)

Number of Circuits:: 1

Ratio - Input:Output:: 1:4

Differential - Input:Output:: No/No

Input:: LVCMOS

Output:: LVCMOS

Frequency - Max:: 140 MHz

Voltage - Supply:: 3V ~ 3.6V

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

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 16-TSSOP

2304NZLPGGI FAQ

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

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

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

3.What payment methods are accepted for 2304NZLPGGI?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2304NZLPGGI?

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

Once your 2304NZLPGGI 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 2304NZLPGGI?

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

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

All 2304NZLPGGI 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 2304NZLPGGI meets industry standards.

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

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

Return procedure for 2304NZLPGGI:

1.Submit a request within 90 days.

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

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