Infineon Technologies CY2300SXCT

Overview

CY2300SXCT from Cypress Semiconductor is a 4-output, 3.3 V phase-aligned clock multiplier IC with single PLL architecture, supporting 10–166.67 MHz output range, ±200 ps input-to-output skew, and 5 V-tolerant REFIN input. It delivers 1/2x, 1x, 1x, and 2x reference frequencies for PC and telecom clock distribution.

For engineers reviewing the CY2300SXCT datasheet, CY2300SXCT pinout, CY2300SXCT application, or CY2300SXCT equivalent, this device serves as a low-jitter, multi-ratio clock generator with guaranteed output-to-output skew <200 ps and OE-controlled output enable functionality in commercial-temperature SOIC packaging.

Technical Context

The CY2300SXCT implements a single on-chip PLL locked to the 5 V-tolerant REFIN input, generating four synchronized outputs via internal divider logic. Its feedback path uses the REF pin, and all outputs are phase-aligned with sub-200 ps skew under matched load conditions.

It supports three distinct frequency ratios (1/2x, 1x, 2x) across four pins, with output enable (OE) providing active-low control and weak pull-up bias. The internal loop filter eliminates need for external components, simplifying board layout for high-speed timing systems.

Key Specifications

Pinout & Package

Package: 8-pin 150-mil SOIC (small-outline integrated circuit), surface-mount, commercial temperature grade.

Key Features

Applications

Equivalent & Alternatives

Two verified alternatives exist for design flexibility and second-source assurance.

Compared with IDT5V9885BGI and ICS853S01I, the CY2300SXCT uniquely combines 5 V-tolerant input, four CMOS outputs, and guaranteed sub-200 ps skew in a low-cost SOIC package-making it optimal for cost-sensitive, single-ended commercial timing applications where legacy signal compatibility matters.

Availability

CY2300SXCT is available at Aetrix Electronics and suitable for PC motherboard design, datacom line card development, and telecom baseband processing requiring stable component supply and long-term commercial-temperature availability.

Supply support for CY2300SXCT 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 logic solutions for computing, communications, and industrial markets.

The CY2300 product line targets cost-effective, phase-aligned clock distribution in commercial-grade systems-emphasizing simplicity, low skew, and interoperability with mixed-voltage clock sources.

FAQ

What is the maximum load capacitance supported at 166.67 MHz?

The CY2300SXCT supports up to 12 pF load capacitance at output frequencies above 133.33 MHz. Exceeding this value degrades rise/fall times beyond 1.20 ns and increases jitter beyond the specified ±175 ps period jitter limit. Layout must minimize trace capacitance and avoid stubs.

Can the OE pin be left floating?

No. The OE pin has a weak internal pull-up but is not rail-tied; floating may cause metastability or partial output enable. It must be actively driven LOW to enable outputs or HIGH (via ≥10 kΩ pull-up to VDD) to disable them. Default state at power-up is high-impedance unless pulled.

Is the 1/2xREF output duty cycle guaranteed?

Yes. At 10–133.33 MHz with 18 pF load, duty cycle is guaranteed 40–60% measured at VDD/2. At 133.33–166.67 MHz with 12 pF load, same specification applies. Duty cycle variation remains within this window across temperature and voltage ranges per datasheet Table 5.

Does the CY2300SXCT require an external crystal?

No. It is a clock multiplier-not a crystal oscillator-and requires an external clock signal applied to the REFIN pin. It does not contain or drive a crystal; the reference clock must be provided by a separate oscillator, clock generator, or system clock source.