Infineon Technologies CY2304NZZI-1T

Overview

CY2304NZZI-1T from Cypress Semiconductor is a 3.3 V, four-output clock buffer optimized for PCI-X and general-purpose timing distribution. It accepts a single input clock (DC–140 MHz), drives four CMOS outputs with ≤60 ps typical output-to-output skew, and features active-high output enable (OE) in an 8-pin TSSOP package for industrial temperature operation (–40 °C to +85 °C).

For engineers reviewing the CY2304NZZI-1T datasheet, CY2304NZZI-1T pinout, CY2304NZZI-1T application, or CY2304NZZI-1T equivalent, key selection criteria include output skew budget, 3.3 V supply compatibility, industrial-grade thermal performance (θJA = 165 °C/W), OE-controlled output gating, and TSSOP footprint constraints in high-density PCI-X or embedded control boards.

Technical Context

The CY2304NZZI-1T implements a simple fanout buffer architecture with no internal PLL or frequency synthesis-input clock is directly distributed to all four outputs. All outputs are CMOS-compatible, share identical propagation delay (2.5–5 ns), and maintain tight duty cycle (40–60%) across 1–140 MHz.

Its OE pin enables synchronous disabling of all outputs to high-impedance state without affecting internal logic or power consumption. Input threshold is VDD/2, and output drive strength supports 24 mA sink/source at VOH/VOL specifications under 25 pF load.

Key Specifications

Pinout & Package

Package: 8-pin TSSOP (4.40 mm body width), RoHS-compliant, surface-mountable with standard reflow profile.

Key Features

Applications

Equivalent & Alternatives

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

Compared with IDT 5V2310APGI and ON Semi NB3N502DG, CY2304NZZI-1T uniquely balances industrial temperature support, OE control, 8-pin TSSOP footprint, and 60 ps typical skew-making it optimal for space-constrained, dynamically controlled PCI-X and embedded clock trees where CMOS compatibility is essential.

Availability

CY2304NZZI-1T is available at Aetrix Electronics and suitable for PCI-X backplane design, industrial PLC timing modules, and embedded control board clock tree implementation requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for CY2304NZZI-1T 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 system-on-chip solutions for industrial, automotive, and communications markets.

The CY2304NZ family targets cost-sensitive, low-skew clock distribution in legacy and industrial interfaces-specifically engineered for PCI-X, embedded control, and multi-peripheral synchronization where simplicity, reliability, and thermal robustness are prioritized over advanced features like PLLs or programmability.

FAQ

Does CY2304NZZI-1T support spread-spectrum clocking?

No. The CY2304NZZI-1T is a passive fanout buffer with no internal modulation circuitry. It preserves input clock jitter and frequency exactly-spread-spectrum capability must be implemented upstream at the oscillator or clock generator stage.

Can OE be toggled during active clock operation without causing glitches?

Yes. The OE pin controls output drivers only; internal clock path remains uninterrupted. Transitioning OE from HIGH to LOW places outputs in high-impedance state cleanly, with no false edges or metastability-verified across –40 °C to +85 °C and 3.0–3.6 V supply range.

What is the maximum capacitive load per output before skew or timing degradation occurs?

Each output is characterized up to 25 pF. Exceeding this load increases rise/fall time beyond 1.5 ns and may degrade output-to-output skew beyond 100 ps. For >25 pF loads, add series termination or consider a higher-drive buffer.

Is CY2304NZZI-1T pin-compatible with CY2304NZZI-1?

Yes. Both share identical 8-pin TSSOP pinout, electrical specifications, and thermal characteristics. The "-1T" suffix denotes tape-and-reel packaging; the "-1" variant is supplied in tube format-no functional or mechanical differences exist between them.