My Inquiry
My Account
Infineon Technologies CY2304NZZXC-1
- Part No.:
- CY2304NZZXC-1
- Manufacturer:
- Infineon Technologies
- Category:
- Application Specific Clock/Timing
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
CY2304NZZXC-1.pdf
- Description:
- IC CLK ZDB 4OUT 140MHZ 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,434
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
CY2304NZZXC-1 from Cypress Semiconductor is a 3.3 V, four-output clock buffer optimized for PCI-X and general-purpose timing distribution. It supports DC to 140 MHz input frequencies, delivers ≤100 ps output-to-output skew, and operates across 0 °C to 70 °C. Used in server motherboard clock trees to fan out system clocks to multiple PCI-X slots.
For engineers reviewing the CY2304NZZXC-1 datasheet, CY2304NZZXC-1 pinout, CY2304NZZXC-1 application, or CY2304NZZXC-1 equivalent, key selection criteria include output skew tolerance, industrial-grade thermal resistance (θJA = 165 °C/W), OE-controlled output enable functionality, and TSSOP-8 footprint compatibility with legacy PCI-X reference designs.
Technical Context
The CY2304NZZXC-1 implements a single-input, four-output CMOS buffer architecture with active-HIGH output enable (OE) control. All outputs are internally matched for low skew, and propagation delay is specified at 2.5–5 ns (BUF_IN rising edge to OUTPUT rising edge).
It uses a rail-to-rail output stage compatible with 3.3 V LVTTL logic levels, supports up to 24 mA sink/source per output, and maintains stable duty cycle (40–60%) across its full 1–140 MHz operating range under 25 pF load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.0–3.6 V - ensures compatibility with standard 3.3 V PCI-X power rails and noise margin compliance |
| Max Operating Frequency | 140 MHz - supports full-speed PCI-X 133 MHz operation with headroom for margin |
| Output-to-Output Skew | 60 ps typical / 100 ps max - enables synchronous sampling across four downstream devices without added deskew circuitry |
| Propagation Delay | 2.5–5 ns - defines worst-case timing budget between input clock arrival and first valid output edge |
| Input Threshold | VDD/2 - guarantees robust switching with standard CMOS-compatible clock sources |
| Load Capacitance | 25 pF - matches typical trace + IC input capacitance on dense server PCBs |
| Operating Temperature | 0 °C to 70 °C - qualified for commercial-grade computing environments including desktop and entry-level server applications |
Pinout & Package
Package: 8-pin TSSOP (4.40 mm body width), RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: BUF_IN | Primary clock input | Accepts single-ended CMOS/LVTTL clock source; threshold at VDD/2 for reliable edge detection |
| 2: OE | Output enable control | Active-HIGH signal; drives all four outputs to high-impedance when LOW, enabling dynamic clock gating |
| 3: OUTPUT1 | Buffered clock output | One of four identical fanout outputs; electrically matched to minimize inter-output timing variation |
| 4: GND | Ground reference | Common return path for all I/O and supply currents; requires low-inductance PCB connection |
| 5: OUTPUT4 | Buffered clock output | Fourth output in pin-sorted sequence; shares same electrical characteristics and skew profile as OUTPUT1–3 |
| 6: VDD | Power supply | 3.3 V supply input; requires local 0.1 µF ceramic decoupling adjacent to pin |
| 7: OUTPUT3 | Buffered clock output | Third output; positioned to reduce crosstalk in TSSOP layout; same drive strength (24 mA) as other outputs |
| 8: OUTPUT2 | Buffered clock output | Second output; completes 4-output set; pinout order optimized for sequential routing on compact motherboard layers |
Key Features
| Feature | Design Value |
|---|---|
| Four matched outputs | Guarantees ≤100 ps skew across all outputs under matched 25 pF loads, eliminating need for external delay tuning |
| OE-controlled tri-state | Allows dynamic clock shutdown without changing upstream source; reduces system-level EMI during idle states |
| DC to 140 MHz bandwidth | Supports both low-frequency reference clocks and high-speed PCI-X 133 MHz signals in same device |
| 3.3 V LVTTL compatibility | Meets VIH ≥ 2.0 V and VIL ≤ 0.8 V thresholds, ensuring interoperability with standard FPGA and ASIC clock inputs |
| TSSOP-8 footprint | Enables drop-in replacement for legacy 8-pin clock buffers while maintaining thermal performance (θJA = 165 °C/W) |
Applications
| PCI-X Slot Clock Distribution | Desktop CPU Front-Side Bus Fanout |
|---|---|
Use Scenario: Distributing 133 MHz PCI-X reference clock from southbridge to four peripheral slots on a server motherboard. IC Role / Device Role / Timing Role: Four-output clock buffer providing low-skew, buffered copies with OE-controlled gating per slot. Use Value: Eliminates timing violations caused by trace-length mismatch; enables independent slot power-down via OE control. | Use Scenario: Fanning out 200 MHz FSB clock from northbridge to memory controller, graphics interface, and I/O hub on a desktop platform. IC Role / Device Role / Timing Role: General-purpose clock repeater ensuring simultaneous clock arrival across asynchronous subsystems. Use Value: Maintains <60 ps typical output skew, preserving setup/hold margins across critical high-speed interfaces. |
| Industrial Control Backplane Timing | Legacy PCI Add-in Card Synchronization |
Use Scenario: Driving synchronized clocks to four isolated CAN or RS-485 transceivers on an industrial backplane. IC Role / Device Role / Timing Role: Low-jitter clock distributor enabling deterministic communication timing across distributed nodes. Use Value: 140 MHz bandwidth and 25 pF load capability support multi-protocol timing without additional level-shifting. | Use Scenario: Replacing aging clock buffers on PCI add-in cards requiring precise 33/66 MHz clock replication. IC Role / Device Role / Timing Role: Pin-compatible upgrade for obsolete 3.3 V clock drivers with improved skew and thermal specs. Use Value: Commercial temperature grade (0 °C to 70 °C) and TSSOP-8 package allow direct board-level replacement without layout changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar clock buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IDT 5V2310APG | 10-pin SOIC; 3.3 V; 5-output; 50 ps typical skew; no OE pin | Lacks output enable; higher pin count increases PCB area and routing complexity | Select when higher output count is required and OE control is unnecessary |
| ON Semi NB3N502MNR2G | 8-pin SOIC; 3.3 V; 4-output; 150 ps max skew; OE pin present | Higher skew spec limits use in >100 MHz PCI-X; SOIC footprint differs from TSSOP | Select for cost-sensitive commercial designs where 150 ps skew is acceptable |
Compared with IDT 5V2310APG and ON Semi NB3N502MNR2G, the CY2304NZZXC-1 uniquely balances TSSOP-8 compactness, 100 ps skew guarantee, and OE functionality-making it optimal for space-constrained, dynamically gated PCI-X clock trees.
Availability
CY2304NZZXC-1 is available at Aetrix Electronics and suitable for PCI-X slot distribution, desktop FSB fanout, and industrial backplane timing requiring stable component supply and commercial-temperature qualification.
Supply support for CY2304NZZXC-1 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-performance timing, memory, and programmable solutions for computing, automotive, and industrial systems.
The CY2304NZ family targets cost-sensitive, high-volume clock distribution in PCI-X and legacy parallel bus systems, emphasizing low skew, simple enable control, and TSSOP packaging for mainstream motherboard integration.
FAQ
What is the maximum load capacitance supported by CY2304NZZXC-1?
The device is characterized for 25 pF total load capacitance per output, including PCB trace and downstream input capacitance. Exceeding this value may increase rise/fall times beyond the 1.5 ns max specification and degrade skew performance due to unequal loading across outputs.
Does CY2304NZZXC-1 require external termination resistors?
No external termination is required. The output drivers are designed for direct connection to LVTTL inputs with 25 pF load. Series termination is not needed unless driving long traces (>10 cm) where impedance matching becomes critical for signal integrity.
Can CY2304NZZXC-1 operate with a 2.5 V supply?
No. The device is specified only for 3.0–3.6 V operation. Using 2.5 V violates the Absolute Maximum Rating for VDD and will result in undefined logic behavior, increased propagation delay, and potential failure to meet 140 MHz frequency requirements.
Is the OE pin 5 V tolerant?
No. The OE pin is not 5 V tolerant. Its absolute maximum input voltage is VDD + 0.5 V (≤4.1 V). Applying 5 V to OE risks permanent damage to the input protection structure and may cause latch-up under sustained overvoltage conditions.
CY2304NZZXC-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- PLL:
- No
- Main Purpose:
- PCI Express (PCIe)
- Input:
- LVCMOS, LVTTL
- Output:
- LVCMOS
- Number of Circuits:
- 1
- Ratio - Input:Output:
- 1:4
- Differential - Input:Output:
- No/No
- Frequency - Max:
- 140MHz
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- 0°C ~ 70°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-TSSOP
CY2304NZZXC-1 FAQ
1.How can I place an order for CY2304NZZXC-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for CY2304NZZXC-1 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 CY2304NZZXC-1 reliable?
The price and inventory of CY2304NZZXC-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY2304NZZXC-1 is usually 5 days.
3.What payment methods are accepted for CY2304NZZXC-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY2304NZZXC-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY2304NZZXC-1?
CY2304NZZXC-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY2304NZZXC-1 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 CY2304NZZXC-1?
For technical support, including CY2304NZZXC-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY2304NZZXC-1 requirements.
6.How does Aetrix verify that CY2304NZZXC-1 is sourced from the original manufacturer or authorized distributors?
All CY2304NZZXC-1 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 CY2304NZZXC-1 meets industry standards.
7.What is the process for return or replacement of CY2304NZZXC-1?
All CY2304NZZXC-1 units undergo pre-shipment inspection (PSI). If there is an issue with CY2304NZZXC-1, 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 CY2304NZZXC-1 part is unused and in its original packaging.
Return procedure for CY2304NZZXC-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
CY2304NZZXC-1 Tags
-
LMK00334RTVRQ1
Texas Instruments
.jpg)
-
DSC557-0344FI0T
Microchip Technology
-
9FGV0241AKILFT
Renesas Electronics Corporation
-
9DBL0452CKILFT
Renesas Electronics Corporation
-
DSC557-0344FL1T
Microchip Technology
-
RC19008AGND#KB0
Renesas Electronics Corporation
-
RC19008AGND#BB0
Renesas Electronics Corporation
-
9DB403DGILFT
Renesas Electronics Corporation
-
9DB233AGILFT
Renesas Electronics Corporation
-
9DB803DGILFT
Renesas Electronics Corporation
-
9FGL0851DKILFT
Renesas Electronics Corporation
-
AB-557-03-HCHC-F-L-C-T
Abracon LLC
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
